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While these samples are representative of the content of NLEBeta,
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1

Property:HostRockLithology | Open Energy Information  

Open Energy Info (EERE)

HostRockLithology HostRockLithology Jump to: navigation, search Property Name HostRockLithology Property Type String Description Condensed description of the lithology of the reservoir rock. This is a property of type Page. Subproperties This property has the following 14 subproperties: B Beowawe Hot Springs Geothermal Area Brady Hot Springs Geothermal Area C Chena Geothermal Area D Desert Peak Geothermal Area G Geysers Geothermal Area H Heber Geothermal Area L Lightning Dock Geothermal Area R Raft River Geothermal Area Roosevelt Hot Springs Geothermal Area S Salton Sea Geothermal Area Steamboat Springs Geothermal Area S cont. Stillwater Geothermal Area V Valles Caldera - Sulphur Springs Geothermal Area W Wabuska Hot Springs Geothermal Area Pages using the property "HostRockLithology"

2

Property:CapRockLithology | Open Energy Information  

Open Energy Info (EERE)

CapRockLithology CapRockLithology Jump to: navigation, search Property Name CapRockLithology Property Type String Description Condensed description of the lithology of the cap rock. Subproperties This property has the following 6 subproperties: B Beowawe Hot Springs Geothermal Area Brady Hot Springs Geothermal Area D Desert Peak Geothermal Area E East Mesa Geothermal Area H Heber Geothermal Area S Salton Sea Geothermal Area Pages using the property "CapRockLithology" Showing 6 pages using this property. A Amedee Geothermal Area + volcanic; lacustrine sediments + B Blue Mountain Geothermal Area + Hydrothermal alteration layer + G Geysers Geothermal Area + Hydrothermal alteration layer + K Kilauea East Rift Geothermal Area + Overlapping a'a' and pahoehoe flows + L Long Valley Caldera Geothermal Area + Metasedimentary Landslide Block; Hydrothermal Alteration Layer +

3

Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal  

Open Energy Info (EERE)

Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal Area, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal Area, California Details Activities (1) Areas (1) Regions (0) Abstract: Coso is one of several high-temperature geothermal systems associated with recent volcanic activity in the Basin and Range province. Chemical and fluid inclusion data demonstrate that production is from a narrow, asymmetric plume of thermal water that originates from a deep reservoir to the south and then flows laterally to the north. Geologic controls on the geometry of the upwelling plume were investigated using petrographic and analytical analyses of reservoir rock and vein material.

4

Sedimentary basin geochemistry and fluid/rock interactions workshop  

SciTech Connect (OSTI)

Fundamental research related to organic geochemistry, fluid-rock interactions, and the processes by which fluids migrate through basins has long been a part of the U.S. Department of Energy Geosciences program. Objectives of this program were to emphasize those principles and processes which would be applicable to a wide range of problems associated with petroleum discovery, occurrence and extraction, waste disposal of all kinds, and environmental management. To gain a better understanding of the progress being made in understanding basinal fluids, their geochemistry and movement, and related research, and to enhance communication and interaction between principal investigators and DOE and other Federal program managers interested in this topic, this workshop was organized by the School of Geology and Geophysics and held in Norman, Oklahoma in November, 1991.

NONE

1991-12-31T23:59:59.000Z

5

Rock Sampling | Open Energy Information  

Open Energy Info (EERE)

Rock Sampling Rock Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Rock Sampling Details Activities (13) Areas (13) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Sampling Information Provided by Technique Lithology: Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Stratigraphic/Structural: Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting. Hydrological: Isotope geochemistry can reveal fluid circulation of a geothermal system.

6

RoBOT: "Rocks Beneath Our Toes" An experiential learning opportunity in mineralogy and geochemistry  

E-Print Network [OSTI]

RoBOT: "Rocks Beneath Our Toes" An experiential learning opportunity in mineralogy Foundation What is RoBOT? The "Rocks Beneath Our Toes" or RoBOT Program began in 2006 with funding from high school RoBOT participants on a weekend field trip to collect and document rock samples

Baxter, Ethan F.

7

Organic geochemistry and correlation of Paleozoic source rocks and Trenton crude oils, Indiana  

SciTech Connect (OSTI)

Shale samples from four cores of the New Albany and Antrim Shales (Devonian) and from six cores of the Maquoketa Group (Ordovician), representing a broad geographic area of Indiana, have been analyzed for total organic carbon, total sulfur, pyrolysis yield (Rock-Eval), bitumen content, and illite crystallinity data. These data indicate that the New Albany, Antrim, and Maquoketa shales contain a sufficient quantity and quality of organic matter to be good petroleum source rocks. Bitumen ratios, Rock-Eval yields, gas chromatography of saturated hydrocarbons, and illite crystallinity data show that the Maquoketa shales have reached a higher level of thermal maturity than the New Albany and Antrim shales. The level of thermal maturity of the Maquoketa shales suggested a maximum burial depth considerably greater than the present depth.

Guthrie, J. (Indiana Geological Survey, Bloomington (USA))

1989-08-01T23:59:59.000Z

8

Geochemistry of volcanic rocks from the Geysers geothermal area, California Coast Ranges  

E-Print Network [OSTI]

source of geothermal energy, is ulti- 0024-4937/$ - see front matter D 2005 Published by Elsevier BGeochemistry of volcanic rocks from the Geysers geothermal area, California Coast Ranges Axel K Potsdam, Germany c Philippine Geothermal, Inc., Makati, Philippines Received 1 May 2004; accepted 25 May

9

Geology, geochemistry, and geochronology of volcanic rocks between Cuauhtemoc and La Junta, central Chihuahua, Mexico  

SciTech Connect (OSTI)

The 1200 km/sup 2/ area of this study straddles the boundary between the Sierra Madre Occidental and Basin and Range physiographic provinces and contains three north-northwest trending, block-faulted mountain ranges. The stratigraphy includes a 200 m thick sequence of ash-flow tuffs with subordinate mafic flows that either overlie or are interlayered with the ash-flow tuffs. This sequence overlies an approximately equal thickness of rhyolitic to dacitic flows and tuffs. At the base of the section occurs a distinctly different and thinner (about 50 m thick) sequence of flows, tuffs, and volcaniclastic sediments that is more nearly intermediate in average composition. The volcanic rocks of this study are primarily mafic and felsic with a bimodal distribution of Rb, Sr, and SiO/sub 2/ concentrations and other chemical parameters. The two modes have similar and overlapping ranges of initial /sup 87/Sr//sup 86/Sr ratios. Trace-element and major-element data generally support magmatic fractional crystallization as an important mechanism within each mode. Chemical trends within mafic rocks can be generated by 20 to 40% fractional crystallization of plagioclase and clinopyroxene (70:30 mixture). However, the formation of rhyolite or dacite from mafic rock requires implausible amounts of fractional crystallization of any proposed phenocryst assemblage, and thus the felsic rocks do not appear to be related to the mafic rocks by this mechanism. Most rhyolites of this study can form from dacitic liquid by 10 to 40% fractional crystallization of plagioclase and alkali feldspar (60:40 mixture).

Duex, T.W.

1983-01-01T23:59:59.000Z

10

Geochemistry of the Banded Iron Formations and their Host Rocks in the Eastern Desert of Egypt BACKUS, Ethan L.1, GAGNON, Kelli E.1, EL-SHAZLY, Aley K.1, and KHALIL, Khalil Isaac2  

E-Print Network [OSTI]

Geochemistry of the Banded Iron Formations and their Host Rocks in the Eastern Desert of Egypt University, Egypt Sponsored by NSF-OISE-1004021 Session 92:T3. Sigma Gamma Epsilon Undergraduate Research over 30,000 km2 in the central Eastern Desert of Egypt. The deposits most resemble Algoma-type iron

El-Shazly, Aley

11

geochemistry | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

geochemistry geochemistry Leads No leads are available at this time. Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. Abstract: As a candidate...

12

Radioactive waste isolation in salt: geochemistry of brine in rock salt in temperature gradients and gamma-radiation fields - a selective annotated bibliography  

SciTech Connect (OSTI)

Evaluation of the extensive research concerning brine geochemistry and transport is critically important to successful exploitation of a salt formation for isolating high-level radioactive waste. This annotated bibliography has been compiled from documents considered to provide classic background material on the interactions between brine and rock salt, as well as the most important results from more recent research. Each summary elucidates the information or data most pertinent to situations encountered in siting, constructing, and operating a mined repository in salt for high-level radioactive waste. The research topics covered include the basic geology, depositional environment, mineralogy, and structure of evaporite and domal salts, as well as fluid inclusions, brine chemistry, thermal and gamma-radiation effects, radionuclide migration, and thermodynamic properties of salts and brines. 4 figs., 6 tabs.

Hull, A.B.; Williams, L.B.

1985-07-01T23:59:59.000Z

13

Geochemistry handbook  

Science Journals Connector (OSTI)

... THE Handbook of Geochemistry has been taken a further substantial step towards completion with the publication of ...

D. G. MURCHISON

1974-08-30T23:59:59.000Z

14

Remedial Action Plan and Site Design for Stabilization of the Inactive Uranium Mill Tailings Sites at Slick Rock, Colorado: Appendix B to Attachment 3, Lithologic logs and monitor well construction information. Final report  

SciTech Connect (OSTI)

This volume contains lithology logs and monitor well construction information for: NC processing site; UC processing site; and Burro Canyon disposal site. This information pertains to the ground water hydrology investigations which is attachment 3 of this series of reports.

NONE

1995-09-01T23:59:59.000Z

15

USGS Energy Geochemistry Database | OpenEI  

Open Energy Info (EERE)

Energy Geochemistry Database Energy Geochemistry Database Dataset Summary Description The Energy Geochemistry Data Base (EGDB) contains chemical analysis data for crude oil, natural gas, coal, water, and rock samples analyzed by the USGS Energy Resources Team's Geochemistry Laboratory, or by contracted-service laboratories. Data was also obtained from the literature and unpublished public domain sources. The sample types included are primarily rock, coal, oil, and gas. Analytical data within the EGDB includes Rock-Eval pyrolysis, organic mass spectrometry, vitrinite reflectance, gas chromatography, stable carbon isotopes, inductively coupled plasma, inductively coupled plasma mass spectrometry, mercury analysis and a number of other related geochemistry analyses that, in some instances, predate the EGDB. The database is in a Microsoft Access format (.mdb).

16

EMSL - geochemistry  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

geochemistry en Diffusional Motion of Redox Centers in Carbonate Electrolytes . http:www.emsl.pnl.govemslwebpublicationsdiffusional-motion-redox-centers-carbonate-electrolytes...

17

Surface Water Geochemistry and Chemical Weathering Across Panama  

Science Journals Connector (OSTI)

A geochemical study of rivers and streams was undertaken across Panama during 2005-09, from the Lago Bayano area in the east to the Costa Rican border in the west. Low overall dissolved solute contents (TDS = 145±160 mg/L) suggest a short residence time for infiltrating precipitation in the weathering zone. Watershed lithology exerts the main control on riverine chemistry, with streams on marine sedimentary rocks having higher dissolved solids loads than those on igneous rocks, with the latter exhibiting the highest silica contents and increasing trends of total cations with increasing dissolved silica. This feature and the large degree of compositional overlap between large rivers and small tributary streams implies that chemical weathering of silicate materials in the soil zone is the predominant process determining the geochemistry of streams and rivers in this tropical environment. Silicate weathering rates (Casil+Mgsil+Na+K) range over more than an order in magnitude from 2.5 to 28.4 tons/km2/y, whilst \\{H4SiO4\\} yields range from 7.1 to 65 tons/km2/y. Basin-wide CO2 consumption yields by silicate weathering, calculated from total cation content (corrected for sea salt contribution), basin area and discharge, are high on a global basis.

Russell S. Harmon; W. Berry Lyons; Christopher B. Gardner; Steven T. Goldsmith; David T. Long; Helena Mitasova; Susan Welch; Kathy Welch

2013-01-01T23:59:59.000Z

18

Rock Lab Analysis | Open Energy Information  

Open Energy Info (EERE)

Rock Lab Analysis Rock Lab Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Rock Lab Analysis Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Rock Lab Analysis Parent Exploration Technique: Lab Analysis Techniques Information Provided by Technique Lithology: Core and cuttings analysis is done to define lithology. Water rock interaction. Can determine detailed information about rock composition and morphology. Density of different lithologic units. Rapid and unambiguous identification of unknown minerals.[1] Stratigraphic/Structural: Core analysis can locate faults or fracture networks. Oriented core can give additional important information on anisotropy. Historic structure and deformation of land.

19

Urban Geochemistry:  

Science Journals Connector (OSTI)

...coal-fired steam engine. The steam engine, together with other advances...With the rise in the use of diesel fuels, sulfate deposition...automobile parts (tires, brakes, engine belts, mufflers, etc...2013-010998 Environmental geology General geochemistry Mineralogical...

Stefano Albanese; Domenico Cicchella

20

SIMS zircon U–Pb and molybdenite Re–Os geochronology, Hf isotope, and whole-rock geochemistry of the Wunugetushan porphyry Cu–Mo deposit and granitoids in NE China and their geological significance  

Science Journals Connector (OSTI)

Abstract The geodynamic setting of magmatic rocks and geodynamic mechanism of Cu–Mo–Fe–Sn–Pb–Zn–Ag polymetallic mineralization in northeastern (NE) China are attracting increasing attention. This study explores these issues by providing SIMS zircon U–Pb dating, whole-rock geochemical, Hf isotopic data of magmatic rocks, and molybdenite Re–Os dating exposed in the Wunugetushan porphyry Cu–Mo deposit, NE China. This deposit is located in the western part of the Great Xing'an Range, on the southeastern margin of the Mongol–Okhotsk Orogenic Belt. Molybdenite Re–Os and SIMS zircon U–Pb dating of the host monzogranitic porphyry and the wall rock of biotite granite in the Wunugetushan porphyry Cu–Mo deposit indicate that the ore-formation, host porphyry, and wall rock-emplacement occurred at 180.5 ± 2.0 Ma, 180.4 ± 1.4 Ma, and 203.5 ± 1.6 Ma, respectively, and the mineralization of the Wunugetushan porphyry Cu–Mo deposit occurred during the same period as that of the host monzogranitic porphyry. Geochemically, the Wunugetushan granitoids are characterized by strong LREE/HREE fractionation, and pronounced negative Nb, Ta, and Ti anomalies, with slightly negative Eu anomalies (Eu/Eu* = 0.71–0.97) of the host monzogranitic porphyry and pronounced negative Eu anomalies (Eu/Eu* = 0.29–0.32) of the wall rock of biotite granite. In situ Hf isotopic analyses of zircons from the host monzogranitic porphyry and the wall rock of biotite granite yielded ?Hf(t) values ranging from 0.5 to 8.2, and from ? 6.9 to 5.9, respectively. The geochemical and isotopic data for the Wunugetushan granitoids imply that the primary magmas of the host monzogranitic porphyry could have originated by partial melting of a thickened lower crust, with input of mantle components, while the primary magmas of the wall rock of biotite granite could have been derived by partial melting of a thickened lower crust that mixed with ancient crustal materials. Based on the regional geological history, geochemistry of the Wunugetushan granitoids, and new isotopic age data, we suggest that the formation of the Wunugetushan porphyry Cu–Mo deposit was possibly induced in the Early Jurassic during the period of the southeastward subduction of the Mongol–Okhotsk oceanic plate beneath the Erguna Massif.

Yinhong Wang; Chunbo Zhao; Fangfang Zhang; Jiajun Liu; Jianping Wang; Runmin Peng; Bin Liu

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Organic geochemistry of Mississippian shales (Bowland Shale Formation) in central Britain: Implications for depositional environment, source rock and gas shale potential  

Science Journals Connector (OSTI)

Abstract Marine Carboniferous shales are proven hydrocarbon source rocks in central Britain. In this contribution the depositional environment and shale gas/liquid potential of the lower Namurian part of the Bowland Shale Formation is studied using 77 thermally immature samples from the Duffield borehole. The Bowland Shale Formation comprises mudstone and turibidite lithofacies reflecting a pronounced sea level controlled cyclicity. The total organic carbon (TOC) content of the mudstones lithofacies (including marine bands) and of fine-grained rocks within the turibidite lithofacies varies between 1.3 and 9.1%. Hydrogen index (HI) values imply the presence of kerogen type III-II. According to biomarker ratios and bulk geochemical parameters, marine bands (maximum flooding surfaces, mfs) were deposited in deep water with slightly enhanced, normal, or slightly reduced salinity. Mudstones of the highstand systems tract (HST) were deposited in environments with normal to reduced salinity, whereas photic zone anoxia favoured the preservation of marine organic matter during deposition of the mfs and the HST. The supply of landplant debris increased during the HST. Turbidites and their non-calcareous mudstone equivalents represent lowstand systems tracts deposited in low salinity environments. Terrestrial organic matter dominates in turbiditic sediments, marine organisms prevail in time-equivalent mudstones. Mudstone beneath marine bands represents transgressive systems tracts when normal marine conditions and photic zone anoxia were re-established. The mudstone lithofacies exhibits a very good to excellent potential to generate conventional mixed oil and gas. TOC content of fine-grained rocks in the turbidite lithofacies depends on the amount of detrital minerals supplied from the south. Moreover, their organic matter is gas-prone. High TOC contents and large thicknesses of the mudstone lithofacies show that the Bowland Shale Formation holds a significant shale gas/liquid potential in areas with appropriate maturity. A relatively low average HI and high clay contents may have negative effects on the shale gas potential.

D. Gross; R.F. Sachsenhofer; A. Bechtel; L. Pytlak; B. Rupprecht; E. Wegerer

2015-01-01T23:59:59.000Z

22

Carbon geochemistry of serpentinites in the Lost City Hydrothermal System (30N, MAR)  

E-Print Network [OSTI]

Carbon geochemistry of serpentinites in the Lost City Hydrothermal System (30°N, MAR) Ade May 2008 Abstract The carbon geochemistry of serpentinized peridotites and gabbroic rocks recovered at the Lost City Hydrothermal Field (LCHF) and drilled at IODP Hole 1309D at the central dome of the Atlantis

Gilli, Adrian

23

Geochemistry of hydrothermal fluids from Axial Seamount Hydrothermal Emissions Study vent field, Juan de Fuca Ridge: Subseafloor boiling and subsequent fluid-rock interaction  

SciTech Connect (OSTI)

Hydrothermal fluids collected from the ASHES vent field in 1986, 1987, and 1988 exhibit a very wide range of chemical composition over a small area ({approximately} 60 m in diameter). Compositions range from a 300C, gas-enriched (285 mmol/kg CO{sub 2}), low-chlorinity ({approximately} 33% of seawater) fluid to a 328C, relatively gas-depleted (50 mmol/kg CO{sub 2}), high-chlorinity ({approximately} 116% of seawater) fluid. The entire range of measured compositions at ASHES is best explained by a single hydrothermal fluid undergoing phase separation while rising through the ocean crust, followed by partial segregation of the vapor and brine phases. Other mechanisms proposed to produce chlorinity variations in hydrothermal fluids (precipitation/dissolution of a chloride-bearing mineral or crustal hydration) cannot produce the covariation of chlorinity and gas content observed at ASHES. There is good argument of the measured fluid compositions generated by a simple model of phase separation, in which gases are partitioned according to Henry's law and all salt remains in the liquid phase. Significant enrichments in silica, lithium and boron in the low-chlorinity fluids over levels predicted by the model are attributed to fluid-rock interaction in the upflow zone. Depletions in iron and calcium suggest that these elements have been removed by iron-sulfide and anhydrite precipitation at some time in the history of the low-chlorinity fluids. The distribution of low- and high-chlorinity venting is consistent with mechanisms of phase segregation based on differential buoyancy or relative permeability. The relatively shallow depth of the seafloor (1,540 m) and the observed chemistry of ASHES fluids are consistent with phase separation in the sub-critical or near-critical region.

Butterfield, D.A.; McDuff, R.E.; Lilley, M.D. (Univ. of Washington, Seattle (United States)); Massoth, G.J. (NOAA, Seattle, WA (United States)); Lupton, J.E. (Univ. of California, Santa Barbara (United States))

1990-08-10T23:59:59.000Z

24

Property:LithologyInfo | Open Energy Information  

Open Energy Info (EERE)

LithologyInfo LithologyInfo Jump to: navigation, search Property Name LithologyInfo Property Type Text Subproperties This property has the following 93 subproperties: 2 2-M Probe Survey A Active Seismic Methods Active Sensors Aerial Photography Aeromagnetic Survey Analytical Modeling C Caliper Log Cation Geothermometers Cement Bond Log Chemical Logging Compound and Elemental Analysis Conceptual Model Controlled Source Frequency-Domain Magnetics Cross-Dipole Acoustic Log D Data Acquisition-Manipulation Data Collection and Mapping Data Techniques Data and Modeling Techniques Drilling Methods E Electric Micro Imager Log Electromagnetic Sounding Methods Elemental Analysis with Fluid Inclusion F FLIR Fault Mapping Field Techniques Flow Test Fluid Inclusion Analysis Fluid Lab Analysis Formation Testing Techniques

25

ROCK THIN SECTIONING AND CUTTING PROTOCOLS FOR 3RD MAPPING PROJECTS (2012)  

E-Print Network [OSTI]

difficult lithologies (e.g. evaporates, clays, or unconsolidated sediments), as consolidated rocks are significantly easier to prepare. Unconsolidated samples may require resin impregnation, and are liable

Henderson, Gideon

26

Geothermal investigations in Idaho. Part 1. Geochemistry and geologic  

Open Energy Info (EERE)

investigations in Idaho. Part 1. Geochemistry and geologic investigations in Idaho. Part 1. Geochemistry and geologic setting of selected thermal waters Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Geothermal investigations in Idaho. Part 1. Geochemistry and geologic setting of selected thermal waters Details Activities (2) Areas (1) Regions (0) Abstract: At least 380 hot springs and wells are known to occur throughout the central and southern parts of Idaho. One hundred twenty-four of these were inventoried as a part of the study reported on herein. At the spring vents and wells visited, the thermal waters flow from rocks ranging in age from Precambrian to Holocene and from a wide range of rock types-igneous, metamorphic, and both consolidated and unconsolidated sediments. Twenty-eight of the sites visited occur on or near fault zones while a

27

The role of eldwork in rock decay research: Case studies from the fringe Ronald I. Dorn a,  

E-Print Network [OSTI]

knowledge of rock decay and continues to build on the classic research of Blackwelder, Bryan, Gilbert, chemistry, civil engineering, geochemistry, geography, geology, hydrology, microbiology, micros- copy

Dorn, Ron

28

Constraints on elastic parameters and implications for lithology on VTI media  

SciTech Connect (OSTI)

Energy considerations provide constraints on elastic stiffnesses in media exhibiting transverse isotropy with a vertical axis of symmetry. If the anisotropy is due to thin layers, additional constraints hold. The constraints can be used to provide insight into the mechanisms causing the anisotropy, which in turn gives information about the lithology. These ideas are illustrated by some examples of anisotropic sedimentary rocks and sediments from the literature.

Berge, P.A.

1995-06-02T23:59:59.000Z

29

Isotopic Analysis- Rock | Open Energy Information  

Open Energy Info (EERE)

Isotopic Analysis- Rock Isotopic Analysis- Rock Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Isotopic Analysis- Rock Details Activities (13) Areas (11) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Rock Lab Analysis Parent Exploration Technique: Rock Lab Analysis Information Provided by Technique Lithology: Water rock interaction Stratigraphic/Structural: Hydrological: Thermal: Dictionary.png Isotopic Analysis- Rock: Isotopes are atoms of the same element that have different numbers of neutrons. An isotopic analysis looks at a particular isotopic element(s) in a given system, while the conditions which increase/decrease the number of neutrons are well understood and measurable.

30

Rock Density | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Rock Density Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Rock Density Details Activities (2) Areas (2) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Rock Lab Analysis Parent Exploration Technique: Rock Lab Analysis Information Provided by Technique Lithology: Density of different lithologic units. Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 10.001,000 centUSD 0.01 kUSD 1.0e-5 MUSD 1.0e-8 TUSD / sample

31

Influence of lithology on longwall mining subsidence  

SciTech Connect (OSTI)

The US Bureau of Mines assessed the geological effects on the ratio of maximum subsidence and extraction thickness, known as the subsidence factor, to develop a simple method for predicting the maximum subsidence. This study is restricted to the Northern Appalachian Coal Basin where data were collected from 13 coal mines. A model previously developed to relate the subsidence factor with the lithology and with the width and depth of working panels was used in the assessment. The result shows the possibility of determining maximum subsidence without resorting to a rigorous method.

Tandanand, S.; Powell, L.R.

1984-12-01T23:59:59.000Z

32

Influence of lithology on longwall mining subsidence  

SciTech Connect (OSTI)

The Bureau of Mines, U.S. Department of the Interior, assessed the geological effects on the ratio of maximum subsidence and extraction thickness, known as the subsidence factor, to develop a simple method for predicting the maximum subsidence. The study is restricted to the Northern Appalachian Coal basin where data were collected from 13 coal mines. A model previously developed to relate the subsidence factor with the lithology and with the width and depth of working panels was used in the assessment. The result shows the possibility of determining maximum subsidence without resorting to a rigorous method.

Tandanand, S.; Powell, L.R.

1982-09-01T23:59:59.000Z

33

Geochemistry of Magnesium Silicate Carbonation in an Aqueous Medium  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Geochemistry of Magnesium Silicate Geochemistry of Magnesium Silicate Carbonation in an Aqueous Medium (Carbon Mineralization) Jon Benner, Deb Bergfeld, Dave Bish, Darrin Byler, Bill Carey, Steve Chipera, George Guthrie, Klaus Lackner, Hans Ziock Hydrology, Geochemistry, Geology Group Los Alamos National Laboratory LA-UR-01-4206 Approved for public release; distribution is unlimited George Guthrie gguthrie@lanl.gov 505-665-6340 Mineral Carbonation: Conversion of CO 2 into Carbonates * alkali carbonates too soluble * alkaline earth carbonates ideal sources: Ca-silicates (feldspar) Mg-silicates (olivine, serpentine, clays) Mg 2+ + CO 3 2- => MgCO 3 Mg 2 SiO 4 + 4H + => 2Mg 2+ + SiO 2(aq) Ultramafic rocks are an abundant Mg source (~0.2 km) 3 serpentine / GW-yr Challenges for Mineral-Carbonation

34

Lithology determination from well logs with fuzzy associative memory neural network  

SciTech Connect (OSTI)

An artificial intelligence technique of fuzzy associative memory is used to determine rock types from well-log signatures. Fuzzy associative memory (FAM) is a hybrid of neutral network and fuzzy expert system. This new approach combines the learning ability of neural network and the strengths of fuzzy linguistic modeling to adaptively infer lithologies from well-log signatures based on (1) the relationships between the lithology and log signature that the neural network have learned during the training and/or (2) geologist`s knowledge about the rocks. The method is applied to a sequence of the Ordovician rock units in northern Kansas. This paper also compares the performances of two different methods, using the same data set for meaningful comparison. The advantages of FAM are (1) expert knowledge acquired by geologists is fully utilized; (2) this knowledge is augmented by the neural network learning from the data, when available; and (3) FAM is transparent in that the knowledge is explicitly stated in the fuzzy rules.

Chang, H.C.; Chen, H.C.; Fang, J.H. [Univ. of Alabama, Tuscaloosa, AL (United States)

1997-05-01T23:59:59.000Z

35

Sandia National Laboratories: Molecular Geochemistry  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Geochemistry Earth Science Bureau of Land Management Fossil Energy Liquid Natural Gas (LNG) Clean Coal Research Capabilities Project Funding Facilities Publications Contact...

36

Geochemistry studies in Eastern Kentucky. Final report  

SciTech Connect (OSTI)

Presented here are the results of inorganic geochemical studies on well cuttings from fourteen wells in the Big Sandy Gas Field. Both x-ray fluorescence and x-ray diffraction were used in analysis. Resultant mineralic data and elemental data were mapped by computer and by hand for five intervals of Ohio Shale and for the Berea/Bedford sequence. Comparisons of the geochemistry trend maps were made with lithology, structure, thermal maturation, gas open flow, and paleoenvironment. Techniques used included visual map comparison, computer map comparison programs utilizing correlation coefficients based on grid derived data sets, cluster analysis, x-y plots, and r/sup 2/ (coefficient of determination). A limited number of regional maps are included. It is concluded that inorganic geochemical analysis can be useful in: (1) suggesting paleoenvironmental trends; (2) establishing depositional trends; (3) enhancing exploration in terms of setting limits and pinpointing potential areas for hydrocarbon recovery; and (4) identification of likely locations for large gas fields when used with other geological studies. Elemental data analysis is the most accurate, and can be done quickly and inexpensively. It is concluded that the Big Sandy gas field area is a unique stratigraphic-structural gas trap, in which sedimentary factors, depositional basin features, plant evolution and occurrence, and structural elements all played important roles. Combinations of certain of these ingredients in different amounts may exist in other parts of the basin, and thus, suggest areas for hydrocarbon accumulation and potential recovery.

Negus-de Wys, J.

1981-04-01T23:59:59.000Z

37

Lithologic Descriptions and Temperature Profiles of Five Wells...  

Open Energy Info (EERE)

and Temperature Profiles of Five Wells in the Southwestern Valles Caldera Region, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Lithologic...

38

Determination of lithology from well logs using a neural network  

SciTech Connect (OSTI)

The authors have developed a computer program to automatically determine lithologies from well logs using a back-propagation neural network. Unlike a conventional serial computer, a neural network is a computational system composed of nodes (sometimes called neurons, neurodes, or units) and the connections between these nodes. Neural computing attempts to emulate the functions of the mammalian brain, thus mimicking thought processes. The neural network approach differs from previous pattern recognition methods in its ability to learn from examples. Unlike conventional statistical methods, this new approach does not require sophisticated mathematics and a large amount of statistical data. This paper discusses the application of neural networks to a pattern recognition problem in geology: the determination of lithology from well logs. The neural network determined the lithologies (limestone, dolomite, sandstone, shale, sandy and dolomitic limestones, sandy dolomite, and shale sandstone) from selected well logs in a fraction of the time required by an experienced human log analyst.

Rogers, S.J.; Fang, J.H. (Univ. of Alabama, Tuscaloosa (United States)); Karr, C.L.; Stanley, D.A. (Bureau of Mines, Tuscaloosa, AL (United States))

1992-05-01T23:59:59.000Z

39

Soda Lake Well Lithology Data and Geologic Cross-Sections  

SciTech Connect (OSTI)

Comprehensive catalogue of drill?hole data in spreadsheet, shapefile, and Geosoft database formats. Includes XYZ locations of well heads, year drilled, type of well, operator, total depths, well path data (deviations), lithology logs, and temperature data. Plus, 13 cross?sections in Adobe Illustrator format.

Faulds, James E.

2013-12-31T23:59:59.000Z

40

The Role of Geochemistry and Stress on Fracture Development and...  

Broader source: Energy.gov (indexed) [DOE]

The Role of Geochemistry and Stress on Fracture Development and Proppant Behavior in EGS Reservoirs The Role of Geochemistry and Stress on Fracture Development and Proppant...

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Appendix A Lithologic and Monitor Well Completion Logs  

Office of Legacy Management (LM)

A A Lithologic and Monitor Well Completion Logs This page intentionally left blank WELL INSTALLATION BLANK CASING: 1.25 in. Stainless Steel 0.0 to 0.35 METHOD WELL SCREEN: 1.25 in. Stainless Steel 0.35 to 3.27 DATE DEVELOPED SUMPIEND CAP: 1.25 in. Stainless Steel 3.27 to 3.58 WATER LEVEL (FT BGS) SURFACE SEAL: LOGGED BY P. McKenzie REMARKS Drillers hit water at 5 fl: well point removed. LITHOLOGIC DESCRIPTION LOCATION SHIPROCK, NM SURFACE ELEV. ( FT NGVD) 4890.00 SITE SHIPROCK TOP OF CASING (FT) 4890.00 WELL NUMBER 0602 MEAS. PT. ELEV. (FT) 4890.00 SLOT SIZE (IN) 0.125 WELL INSTALLATION INTERVAL (FT) DRILLING METHOD BLANK CASING: 1.25 in. Stainless Steel 0.0 to 0.35 METHOD WELL SCREEN: 1.25 in. Stainless Steel 0.35 to 3.27 DATE DEVELOPED SUMPIEND CAP: 1.25 in. Stainless Steel 3.27 to 3.58

42

Rock Sampling At Socorro Mountain Area (Armstrong, Et Al., 1995) | Open  

Open Energy Info (EERE)

Armstrong, Et Al., 1995) Armstrong, Et Al., 1995) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Socorro Mountain Area (Armstrong, Et Al., 1995) Exploration Activity Details Location Socorro Mountain Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Corresponding Socorro caldera Carboniferous rocks were studied in the field in 1988-1992-Renault later completed geochemistry and silica-crystallite geothermometry, Armstrong petrographic analysis and cathodoluminescence, Oscarson SEM studies, and John Repetski (USGS, Reston, Virgina) conodont stratigraphy and color and textural alteration as guides to the carbonate rocks' thermal history. The carbonate-rock classification used in this

43

Evaluation of Five Sedimentary Rocks Other Than Salt for Geologic Repository Siting Purposes  

SciTech Connect (OSTI)

The US Department of Energy (DOE), in order to increase the diversity of rock types under consideration by the geologic disposal program, initiated the Sedimary ROck Program (SERP), whose immediate objectiv eis to evaluate five types of secimdnary rock - sandstone, chalk, carbonate rocks (limestone and dolostone), anhydrock, and shale - to determine the potential for siting a geologic repository. The evaluation of these five rock types, together with the ongoing salt studies, effectively results in the consideration of all types of relatively impermeable sedimentary rock for repository purposes. The results of this evaluation are expressed in terms of a ranking of the five rock types with respect to their potential to serve as a geologic repository host rock. This comparative evaluation was conducted on a non-site-specific basis, by use of generic information together with rock evaluation criteria (RECs) derived from the DOE siting guidelines for geologic repositories (CFR 1984). An information base relevant to rock evaluation using these RECs was developed in hydrology, geochemistry, rock characteristics (rock occurrences, thermal response, rock mechanics), natural resources, and rock dissolution. Evaluation against postclosure and preclosure RECs yielded a ranking of the five subject rocks with respect to their potential as repository host rocks. Shale was determined to be the most preferred of the five rock types, with sandstone a distant second, the carbonate rocks and anhydrock a more distant third, and chalk a relatively close fourth.

Croff, A.G.; Lomenick, T.F.; Lowrie, R.S.; Stow, S.H.

2003-11-15T23:59:59.000Z

44

TTG magmatism in the Congo craton; a view from major and trace element geochemistry, RbSr and SmNd systematics: case  

E-Print Network [OSTI]

TTG magmatism in the Congo craton; a view from major and trace element geochemistry, Rb­Sr and Sm of the Sangmelima region (Ntem complex, Congo craton) in southern Cameroon range in modal composition from rocks. TTG intrusions in the Sangmelima region represent a major Archaean accretion event in the Congo craton

Siebel, Wolfgang

45

White Rock  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Furnished house for rent in rural White Rock Bright and sunny Ideal for a young family Safe neighborhood 10 min drive to LANL 1300 per month, basic utilities included 1180 sq ft....

46

Rock magnetism  

Science Journals Connector (OSTI)

The past three decades have witnessed a new paradigm, the plate tectonics paradigm, in Earth sciences. The record of the Earth's magnetic field stored in rocks played a major role in the establishment of this par...

Ronald T. Merrill

1989-01-01T23:59:59.000Z

47

Mechanical properties and modeling of seal-forming lithologies  

SciTech Connect (OSTI)

Both rocksalt and shale lithologies are actively deformed in response to gravitational loads associated with deposition, and both form effective seals to petroleum and natural gas. Thus, the shapes of seal-forming units, and the nature of fractures and faults that may breach them depend upon either the mechanical properties of salt or those of shale, and the loading histories to which they have been subjected. The objectives of this research include the determination of the mechanical properties under controlled conditions of well-characterized shales, and the numerical modeling of rocksalt (and eventually shale) formations using laboratory-based rheologies. Progress has been made towards these goals over this project period, both in our experimental program on shale deformation and model development for the growth of salt diapirs. The mechanical anisotropy of an illite-bearing shale from Louisiana has been determined and related to the preferred orientation and distribution of clays. Its strength in the absence of pore fluids has been determined at confining pressures of up to 250 MPa and at high pressure we have investigated the effects of deformation rate and temperature. A numerical finite difference code has been developed to solve the incompressible Navier-Stokes equations and validated using a two- layer linear viscous model for which analytic solutions are available. Although the code has only been validated for the linear viscous case, it is capable of solving for highly nonlinear constitutive laws as well as solving for arbitrary interfaces between the salt and overburden.

Kronenberg, A.K.; Russell, J.E.; Carter, N.L.; Ibanez, W.; Mazariegos, R.

1992-04-01T23:59:59.000Z

48

Rock Sampling At Coso Geothermal Area (1995) | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Rock Sampling At Coso Geothermal Area (1995) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Coso Geothermal Area (1995) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Rock Sampling Activity Date 1995 Usefulness not indicated DOE-funding Unknown Notes Geologic controls on the geometry of the upwelling plume were investigated using petrographic and analytical analyses of reservoir rock and vein material. References Lutz, S.J.; Moore, J.N. ; Copp, J.F. (1 June 1995) Lithology and alteration mineralogy of reservoir rocks at Coso Geothermal Area,

49

Deep borehole log evidence for fractal distribution of fractures in crystalline rock  

Science Journals Connector (OSTI)

......as well as large scale-lengths...fractures seen in drilling cores and...register on a borehole scanning...rock in the borehole wall. In...evidence in the drilling logs or retrieved...core that large-scale fractures...samples, and drilling history...control the large-scale trend...sensitive to borehole lithology......

Peter Leary

1991-12-01T23:59:59.000Z

50

Groundwater nutrient concentrations near an incised midwestern stream: effects of floodplain lithology and land management  

Science Journals Connector (OSTI)

In Iowa, the majority of alluvial fill in valleys is Holocene in age collectively called the DeForest Formation (Bettis 1990; Bettis et al. 1992...). The formation is divided into four members based on lithologic...

Keith E. Schilling; Peter Jacobson

2008-02-01T23:59:59.000Z

51

Petroleum geochemistry of Lower Indus Basin, Pakistan: I. Geochemical interpretation and origin of crude oils  

Science Journals Connector (OSTI)

Abstract The study focused on the petroleum geochemistry of crude oils produced from Cretaceous reservoirs. Geochemical portrayal of crude oils has been carried out by means of diagnostic biomarker parameters like relative distribution of steranes (C27–C28–C29 ???-20R steranes), C19 and C23 tricyclic terpanes (TT), C24 tetracyclic terpanes (TeT) and hopanes. These parameters suggest that the crude oils contain terrigenous organic matter (OM) mixed with small input of marine OM. The OM of the source rocks was deposited in oxic depositional environment. Maturity parameters, C32 22S/(22S+22R) homohopanes and sterane isomerization ratios [20S/(20S+20R), ???/(???+???) for C29 steranes] indicate that these crude oil are produced from the source rocks at early mature stage to mature stage.

Arif Nazir; Tahira Fazeelat

2014-01-01T23:59:59.000Z

52

Mechanical properties and modeling of seal-forming lithologies  

SciTech Connect (OSTI)

Specific goals and accomplishments of this research include: (1) The evaluation of models of salt diaper ascent that involve either power law, dislocation creep as determined experimentally by Horseman et al. (1993) or linear, fluid-assisted creep as reported by Spiers et al. (1988, 1990, 1992). We have compared models assuming these two, experimentally evaluated flow laws and examined the predictions they make regarding diaper incubation periods, ascent velocities, deviatoric stresses and strain rates. (2) The evaluation of the effects of differential loading on the initiation an of salt structures. (3) Examination of the role of basement faults on the initiation and morphologic evolution of salt structures. (4) Evaluation of the mechanical properties of shale as a function of pressure and determination of the nature of its brittle-ductile transition. (5) Evaluation of the mechanical anisotropies of shales with varying concentrations, distributions and preferred orientations of clay. (6) The determination of temperature and ratedependencies of strength for a shale constitutive model that can be used in numerical models that depend on viscous formulations. (7) Determination of the mechanisms of deformation for argillaceous rocks over awide range of conditions. (8) Evaluation of the effects of H[sub 2]O within clay interlayers, as adsorbed surface layers.

Kronenberg, A.K.; Russell, J.E.; Carter, N.L.; Mazariegos, R.; Ibanez, W.

1993-01-01T23:59:59.000Z

53

The Role of Geochemistry and Stress on Fracture Development and...  

Broader source: Energy.gov (indexed) [DOE]

The Role of Geochemistry and Stress on Fracture Development and Proppant Behavior in EGS Reservoirs Principal Investigator (Joseph Moore) Presenter Name (John McLennan)...

54

Crustal Geophysics and Geochemistry Science Center | Open Energy...  

Open Energy Info (EERE)

Science Center Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Crustal Geophysics and Geochemistry Science Center Author USGS Published...

55

Compiled Multi-Lab Geochemistry Synoptic Survey (LANL, ORNL, LBNL), Barrow, Alaska; 2012  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

To assess the effects of microtopography and depth on ground water geochemistry in arctic polygonal terrain.

Brent Newman; Heather Throckmorton

56

Organic geochemistry and organic petrography  

SciTech Connect (OSTI)

The Vermillion Creek coals and shales contain dominantly humic organic matter originating from woody plant tissues except for one shale unit above the coals, which contains hydrogen-rich kerogen that is mostly remains of filamentous algae, of likely lacustrine origin. The coals have two unusual features - very low inertinite content and high sulfur content compared to mined western coals. However, neither of these features points to the limnic setting reported for the Vermillion Creek sequence. The vitrinite reflectance of Vermillion Creek shales is markedly lower than that of the coals and is inversely proportional to the H/C ratio of the shales. Rock-Eval pyrolysis results, analyses of H, C, and N, petrographic observations, isotope composition of organic carbon, and amounts and compositions of the CHCl/sub 3/-extractable organic matter all suggest mixtures of two types of organic matter in the Vermillion Creek coals and clay shales: (1) isotopically heavy, hydrogen-deficient, terrestrial organic matter, as was found in the coals, and (2) isotopically light, hydrogen-rich organic matter similar to that found in one of the clay-shale samples. The different compositions of the Vermillion Creek coal, the unnamed Williams Fork Formation coals, and coals from the Middle Pennsylvanian Marmaton and Cherokee Groups are apparently caused by differences in original plant composition, alteration of organic matter related to different pH conditions of the peat swamps, and slightly different organic maturation levels.

Bostick, N.H.; Hatch, J.R.; Daws, T.A.; Love, A.H.; Lubeck, S.C.M.; Threlkeld, C.N.

1987-01-01T23:59:59.000Z

57

Rock magnetism of remagnetized carbonate rocks: another look  

E-Print Network [OSTI]

and significance of magnetism in sedimentary rocks. Journal1997. Rock Magnetism. ¨ zdemir, O Dunlop, D. J. & Oon July 30, 2013 ROCK MAGNETISM: REMAGNETIZED CARBONATES

Jackson, M.; Swanson-Hysell, N. L

2012-01-01T23:59:59.000Z

58

Geothermal Exploration Using Surface Mercury Geochemistry | Open Energy  

Open Energy Info (EERE)

Surface Mercury Geochemistry Surface Mercury Geochemistry Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geothermal Exploration Using Surface Mercury Geochemistry Details Activities (5) Areas (3) Regions (0) Abstract: Shallow, soil-mercury surveys can be used effectively in exploration for geothermal resources. Soil-mercury data from six areas in Nevada, California and New Mexico are analyzed using contour maps, histogram and probability graphs. Plotting on probability graphs allows background and anomalous populations to be resolved even when considerable overlap between populations is present. As is shown in several examples, separate soil-mercury populations can be plausibly interpreted. Mercury data can significantly enhance the structural understanding of a prospect

59

Mercury Surface, Space Environment, Geochemistry, and Ranging Mission  

E-Print Network [OSTI]

MESSENGER Mercury Surface, Space Environment, Geochemistry, and Ranging Mission Frequently Asked Mercury's characteristics and environment during two complementary mission phases. The mission's primary goal is to increase our understanding of Mercury's density, geologic history, magnetic field, core

Mojzsis, Stephen J.

60

Surface Mercury Geochemistry As A Guide To Volcanic Vent Structure...  

Open Energy Info (EERE)

Geochemistry As A Guide To Volcanic Vent Structure And Zones Of High Heat Flow In The Valley Of Ten Thousand Smokes, Katmai National Park, Alaska Jump to: navigation, search OpenEI...

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Advances In The Past 20 Years- Geochemistry In Geothermal Exploration  

Open Energy Info (EERE)

Advances In The Past 20 Years- Geochemistry In Geothermal Exploration Advances In The Past 20 Years- Geochemistry In Geothermal Exploration Resource Evaluation And Reservoir Management Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Advances In The Past 20 Years- Geochemistry In Geothermal Exploration Resource Evaluation And Reservoir Management Details Activities (8) Areas (2) Regions (0) Abstract: Most theoretical fundamentals of geothermal geochemistry were established by the mid-1980s, as were numerous practical applications of these fundamentals to geothermal resource evaluation and management. Since that time, these geeochmical tools have been refined to various degrees. Noted developments include: widespread use of high-performance liquid chromatography (HPLC); advances in spectral analysis; new and refined

62

Computational Studies in Molecular Geochemistry and Biogeochemistry  

SciTech Connect (OSTI)

The ability to predict the transport and transformations of contaminants within the subsurface is critical for decisions on virtually every waste disposal option facing the Department of Energy (DOE), from remediation technologies such as in situ bioremediation to evaluations of the safety of nuclear waste repositories. With this fact in mind, the DOE has recently sponsored a series of workshops on the development of a Strategic Simulation Plan on applications of high perform-ance computing to national problems of significance to the DOE. One of the areas selected for application was in the area of subsurface transport and environmental chemistry. Within the SSP on subsurface transport and environmental chemistry several areas were identified where applications of high performance computing could potentially significantly advance our knowledge of contaminant fate and transport. Within each of these areas molecular level simulations were specifically identified as a key capability necessary for the development of a fundamental mechanistic understanding of complex biogeochemical processes. This effort consists of a series of specific molecular level simulations and program development in four key areas of geochemistry/biogeochemistry (i.e., aqueous hydrolysis, redox chemistry, mineral surface interactions, and microbial surface properties). By addressing these four differ-ent, but computationally related, areas it becomes possible to assemble a team of investigators with the necessary expertise in high performance computing, molecular simulation, and geochemistry/biogeochemistry to make significant progress in each area. The specific targeted geochemical/biogeochemical issues include: Microbial surface mediated processes: the effects of lipopolysacchardies present on gram-negative bacteria. Environmental redox chemistry: Dechlorination pathways of carbon tetrachloride and other polychlorinated compounds in the subsurface. Mineral surface interactions: Describing surfaces at multiple scales with realistic surface functional groups Aqueous Hydrolysis Reactions and Solvation of Highly Charged Species: Understanding the formation of polymerized species and ore formation under extreme (Hanford Vadose Zone and geothermo) conditions. By understanding on a fundamental basis these key issues, it is anticipated that the impacts of this research will be extendable to a wide range of biogeochemical issues. Taken in total such an effort truly represents a “Grand Challenge” in molecular geochemistry and biogeochemistry.

Felmy, Andrew R.; Bylaska, Eric J.; Dixon, David A.; Dupuis, Michel; Halley, James W.; Kawai, R.; Rosso, Kevin M.; Rustad, James R.; Smith, Paul E.; Straatsma, TP; Voth, Gregory A.; Weare, John H.; Yuen, David A.

2006-04-18T23:59:59.000Z

63

Can seismic character identify lithologies associated with Bluell and Sherwood shorelines and shoals  

SciTech Connect (OSTI)

Several new oil fields have been discovered in the Bluell and Sherwood members of the Mission Canyon Formation, reviving the Mississippian shoreline play in the eastern Williston basin. During periodic regressions, carbonates and evaporites were deposited along the shoreline of a shallow sea. Embayments in the shoreline created traps that contain 3 - 8 million bbl of oil. Carbonate shoals developed offshore. Surrounded by impermeable carbonate mud, they trap 1 - 3 million bbl of oil. The ability of seismic character to distinguish lithologies associated with shorelines and shoals was investigated using sonic logs, models, and seismic data. Shorelines: The gross thickness of the Bluell zone can range between 40 and 70 ft, the Sherwood zone between 35 and 80 ft. Changing thicknesses on geologic models had a distinct effect on seismic character. Also, seismic character varied in response to changing stratigraphy above, within, and below the Bluell and Sherwood zones. Carbonate and anhydrite bulk densities and velocities differ by about 10%. Modeling this difference demonstrated a minimal change in seismic character. Seismic character cannot delineate the shoreline transition from carbonate to anhydrite. Other stratigraphic variations alter seismic character more than this lithologic change. Shoals: Velocity and density variations between shoal carbonates and intershoal mud can differ by 30%. Sonic log seismograms and seismic data show a distinct character change between these lithologies. Seismic character can be used to delineate carbonate shoals and mud. However, the shoal/mud character change can be modified by the seismic response to other stratigraphic variations. Calibration with nearby wells can reduce interpretational uncertainty.

Johnson, E.H. (Balcron Oil, Billings, MT (United States))

1991-06-01T23:59:59.000Z

64

Geochemistry of the Yegua Aquifer system and its relation to microbial processes  

E-Print Network [OSTI]

Two sediment cores (NP-I and NP-3) were taken from the Yegua formation in East-central Texas and analyzed for sedimentology, geochemistry, and microbiology to assess the relationship between geochemistry and microbial processes. Both cows suggest a...

Schlichenmeyer, Jeannette Leone

2012-06-07T23:59:59.000Z

65

Chemie der Erde 67 (2007) 151174 Petrology, geochemistry and zircon age for redwitzite at Abertamy,  

E-Print Network [OSTI]

Chemie der Erde 67 (2007) 151­174 Petrology, geochemistry and zircon age for redwitzite at Abertamy

Siebel, Wolfgang

66

Rock Magnetism To-Day  

Science Journals Connector (OSTI)

... ROCK magnetism is that branch of geophysics that deals with the origin of magnetization in rocks and ... that deals with the origin of magnetization in rocks and its stability. Workers in rock magnetism are also interested in the phenomenon of self-reversal, that is, a rock acquiring ...

SUBIR K. BANERJEE

1966-02-12T23:59:59.000Z

67

Session: Hard Rock Penetration  

SciTech Connect (OSTI)

This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Hard Rock Penetration - Summary'' by George P. Tennyson, Jr.; ''Overview - Hard Rock Penetration'' by James C. Dunn; ''An Overview of Acoustic Telemetry'' by Douglas S. Drumheller; ''Lost Circulation Technology Development Status'' by David A. Glowka; ''Downhole Memory-Logging Tools'' by Peter Lysne.

Tennyson, George P. Jr.; Dunn, James C.; Drumheller, Douglas S.; Glowka, David A.; Lysne, Peter

1992-01-01T23:59:59.000Z

68

Seismicity And Fluid Geochemistry At Lassen Volcanic National Park,  

Open Energy Info (EERE)

Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two Circulation Cells In The Hydrothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two Circulation Cells In The Hydrothermal System Details Activities (7) Areas (2) Regions (0) Abstract: Seismic analysis and geochemical interpretations provide evidence that two separate hydrothermal cells circulate within the greater Lassen hydrothermal system. One cell originates south to SW of Lassen Peak and within the Brokeoff Volcano depression where it forms a reservoir of hot fluid (235-270°C) that boils to feed steam to the high-temperature

69

Geology, Water Geochemistry And Geothermal Potential Of The Jemez Springs  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Geology, Water Geochemistry And Geothermal Potential Of The Jemez Springs Area, Canon De San Diego, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geology, Water Geochemistry And Geothermal Potential Of The Jemez Springs Area, Canon De San Diego, New Mexico Details Activities (5) Areas (2) Regions (0) Abstract: Studies of the geology, geochemistry of thermal waters, and of one exploratory geothermal well show that two related hot spring systems discharge in Canon de San Diego at Soda Dam (48°C) and Jemez Springs (72°C). The hot springs discharge from separate strands of the Jemez fault zone which trends northeastward towards the center of Valles Caldera. Exploration drilling to Precambrian basement beneath Jemez Springs

70

Noble Gas Geochemistry In Thermal Springs | Open Energy Information  

Open Energy Info (EERE)

Geochemistry In Thermal Springs Geochemistry In Thermal Springs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Noble Gas Geochemistry In Thermal Springs Details Activities (1) Areas (1) Regions (0) Abstract: The composition of noble gases in both gas and water samples collected from Horseshoe Spring, Yellowstone National Park, was found to be depth dependent. The deeper the sample collection within the spring, the greater the enrichment in Kr, Xe, radiogenic 4He, and 40Ar and the greater the depletion in Ne relative to 36Ar. The compositional variations are consistent with multi-component mixing. The dominant component consists of dissolved atmospheric gases acquired by the pool at the surface in contact with air. This component is mixed in varying degree with two other

71

Geochemistry Of The Lake City Geothermal System, California, Usa | Open  

Open Energy Info (EERE)

Geochemistry Of The Lake City Geothermal System, California, Usa Geochemistry Of The Lake City Geothermal System, California, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Geochemistry Of The Lake City Geothermal System, California, Usa Details Activities (2) Areas (1) Regions (0) Abstract: Lake City hot springs and geothermal wells chemically fall into a narrow compositional group. This indicates that, with the exception of a few hot springs, mixing with shallow cold ground waters does not have a significant influence on the chemistry of the hot springs. Narrow ranges in plots of F, B and Li versus Cl, and _D to _18O values indicate minimal mixing. Because of this, the compositions of the natural hot spring waters are fairly representative of the parent geothermal water. The average

72

Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon |  

Open Energy Info (EERE)

Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon Details Activities (2) Areas (1) Regions (0) Abstract: Isotopic compositions were determined for hydrothermal quartz, calcite, and siderite from core samples of the Newberry 2 drill hole, Oregon. The Δ15O values for these minerals decrease with increasing temperatures. The values indicate that these hydrothermal minerals precipitated in isotopic equilibrium with water currently present in the reservoirs. The Δ18O values of quartz and calcite from the andesite and basalt flows (700-932 m) have isotopic values which require that the equilibrated water Δ18O values increase slightly (- 11.3 to -9.2‰) with

73

Exploration geochemistry: The Los Alamos experience  

SciTech Connect (OSTI)

Los Alamos National Laboratory became actively involved in geochemical exploration in 1975 by conducting a reconnaissance-scale exploration program for uranium as part of the National Uranium Resource Evaluation program. Initially, only uranium and thorium were analyzed. By 1979 Los Alamos was analyzing a multielement suite. The data were presented in histograms and as black and white concentration plots for uranium and thorium only. Data for the remaining elements were presented as hard copy data listings in an appendix to the report. In 1983 Los Alamos began using exploration geochemistry for the purpose of finding economic mineral deposits to help stimulate the economies of underdeveloped countries. Stream-sediment samples were collected on the Caribbean island of St. Lucia and a geochemical atlas of that island was produced. The data were statistically smoothed and presented as computer-generated color plots of each element of the multielement suite. Studies for the US Bureau of Land Management in 1984 consisted of development of techniques for the integration of several large data sets, which could then be used for computer-assisted mineral resource assessments. A supervised classification technique was developed which compares the attributes of grid cells containing mines or mineral occurrences with attributes of unclassified cells not known to contain mines or occurrences. Color maps indicate how closely unclassified cells match in attributes the cells with mines or occurrences. 20 refs., 1 fig., 1 tab.

Maassen, L.W.; Bolivar, S.L.

1989-01-01T23:59:59.000Z

74

Reservoir geochemistry: A link between reservoir geology and engineering?  

SciTech Connect (OSTI)

Geochemistry provides a natural, but poorly exploited, link between reservoir geology and engineering. The authors summarize some current applications of geochemistry to reservoir description and stress that, because of their strong interactions with mineral surfaces and water, nitrogen and oxygen compounds in petroleum may exert an important influence on the pressure/volume/temperature (PVT) properties of petroleum, viscosity and wettability. The distribution of these compounds in reservoirs is heterogeneous on a submeter scale and is partly controlled by variations in reservoir quality. The implied variations in petroleum properties and wettability may account for some of the errors in reservoir simulations.

Larter, S.R.; Aplin, A.C.; Chen, M.; Taylor, P.N. [Univ. of Newcastle (Australia); Corbett, P.W.M.; Ementon, N. [Heriot-Watt Univ., Edinburgh (United Kingdom)

1997-02-01T23:59:59.000Z

75

Geochemistry of silicate-rich rocks can curtail spreading of carbon dioxide in subsurface aquifers  

E-Print Network [OSTI]

of carbon sequestration and dissolution rates in the subsurface, suggesting that pooled carbon dioxide may remain in the shallower regions of the formation for hundreds to thousands of years. The deeper regions of the reservoir can remain virtually carbon... interests. References 1. Marini, L. Geochemical Sequestration of Carbon Dioxide. (Elsevier 2007). 2. IPCC Special Report on Carbon Dioxide Capture and Storage, edited by Metz B. et al. (Cambridge University Press, UK and New York, USA, 2005). 3. Falkowski...

Cardoso, S. S. S.; Andres, J. T. H.

2014-12-11T23:59:59.000Z

76

Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars  

Science Journals Connector (OSTI)

...Guelph, ON N1G 2W1, Canada.7Space Science Institute, Boulder, CO 80301, USA.8Chemistry Division, Los Alamos National Laboratory, Los...Burley S. D. Ghosh A. Saraswati P. K. , The influence of flood basaltic source terrains on the efficiency of tectonic setting...

S. M. McLennan; R. B. Anderson; J. F. Bell III; J. C. Bridges; F. Calef III; J. L. Campbell; B. C. Clark; S. Clegg; P. Conrad; A. Cousin; D. J. Des Marais; G. Dromart; M. D. Dyar; L. A. Edgar; B. L. Ehlmann; C. Fabre; O. Forni; O. Gasnault; R. Gellert; S. Gordon; J. A. Grant; J. P. Grotzinger; S. Gupta; K. E. Herkenhoff; J. A. Hurowitz; P. L. King; S. Le Mouélic; L. A. Leshin; R. Léveillé; K. W. Lewis; N. Mangold; S. Maurice; D. W. Ming; R. V. Morris; M. Nachon; H. E. Newsom; A. M. Ollila; G. M. Perrett; M. S. Rice; M. E. Schmidt; S. P. Schwenzer; K. Stack; E. M. Stolper; D. Y. Sumner; A. H. Treiman; S. VanBommel; D. T. Vaniman; A. Vasavada; R. C. Wiens; R. A. Yingst; MSL Science Team

2014-01-24T23:59:59.000Z

77

Black Rock Point Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Black Rock Point Geothermal Area Black Rock Point Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Black Rock Point Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.9553,"lon":-119.1141,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

78

COAL QUALITY AND GEOCHEMISTRY, GREATER GREEN RIVER BASIN, WYOMING  

E-Print Network [OSTI]

Chapter GQ COAL QUALITY AND GEOCHEMISTRY, GREATER GREEN RIVER BASIN, WYOMING By G.D. Stricker and M coal beds and zones in the Northern RockyMountains and Great Plains region, U.S. Geological Survey of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains region, U

79

COAL QUALITY AND GEOCHEMISTRY, WILLISTON BASIN, NORTH DAKOTA  

E-Print Network [OSTI]

Chapter WQ COAL QUALITY AND GEOCHEMISTRY, WILLISTON BASIN, NORTH DAKOTA By G.D. Stricker and M coal beds and zones in the Northern RockyMountains and Great Plains region, U.S. Geological Survey of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains region, U

80

COAL QUALITY AND GEOCHEMISTRY, HANNA AND CARBON BASINS, WYOMING  

E-Print Network [OSTI]

Chapter HQ COAL QUALITY AND GEOCHEMISTRY, HANNA AND CARBON BASINS, WYOMING By G.D. Stricker and M coal beds and zones in the Northern RockyMountains and Great Plains region, U.S. Geological Survey of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains region, U

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Plutonic and metamorphic xenoliths from the Cascada Tuff, Chihuahua, Mexico, as evidence indicating the composition of the basement rocks beneath the Sierra Madre Occidental  

SciTech Connect (OSTI)

The Sierra Madre Occidental of western Mexico is composed dominantly of Mid-Tertiary felsic and subordinate mafic volcanic rocks with only sparse outcrops of non-volcanic rocks. There are widely scattered but small exposure of plutonic rocks but regionally metamorphosed rocks are not known to occur in the Sierra. To this date the only known area where plutonic and metamorphic xenoliths have been found is near the village of Basaseachic in western Chihuahua where thick outcrops of the Cascada Tuff occur. The xenoliths are the only known occurrence of regionally metamorphosed rocks for a distance of about 400 km between exposures of Precambrian rocks to the west in Sonora and the east in central Chihuahua. Non-volcanic xenoliths from a few cm to about one meter in diameter occur most abundantly in the upper portions of the Cascada Tuff. They can be divided into four main groups in decreasing order of abundance as follows: (1) coarse-grained phaneritic felsic igneous rocks; (2) cataclastically deformed plutonic rocks; (3) fine-grained phaneritic, mafic to intermediate igneous rocks; and (4) low-grade schistose, gneissic, and non-foliated metamorphic rocks. The lithological composition of the xenoliths is grossly similar to that described for Precambrian metamorphic and plutonic rocks from northern Mexico and the southwestern US.

Duex, T.W.

1985-01-01T23:59:59.000Z

82

Intergrating Magnetotellurics, Soil Gas Geochemistry and Structural Analysis to Identify Hidden, High Enthalpy, Extensional Geothermal Systems  

Broader source: Energy.gov [DOE]

Intergrating Magnetotellurics, Soil Gas Geochemistry and Structural Analysis to Identify Hidden, High Enthalpy, Extensional Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

83

A Rock Physics Based Investigation of Pore Structure Variations Associated with a CO2 Flood in a Clastic Reservoir, Delhi, LA  

E-Print Network [OSTI]

3-D seismic which spans the entire field (Figure 7). Since both Sun (2004) and Aveseth?s (2011) models correlate dry bulk modulus with the pore structure of a reservoir, possibly the Sun (2004) model maybe applicable to the 3-D range as well... ................................................................................................................. 85 5.1 Wells 159-2 and 169-5 Variability in Lithology, Porosity and Permeability ........ 86 5.2 Velocity Estimation Rock Physic Models .............................................................. 89 5.3 Variability in Bulk and Shear Modulus...

Davidson, Daniel

2013-08-14T23:59:59.000Z

84

Neutron and Gamma Ray Scattering Measurements for Subsurface Geochemistry  

Science Journals Connector (OSTI)

...subsurface porous rocks that covers...definition ofa reservoir is made more...extent, porosity, hydrocarbon...possibility for the reservoir to be profitable...assessment of rock formation...reservoir quality. The selection...ofporosity, permeability, and hydrocarbon...

Darwin V. Ellis

1990-10-05T23:59:59.000Z

85

Lithologic and structural controls of limestone-hosted Pb-Zn-Ag mineralization in Chihuahua, Mexico  

SciTech Connect (OSTI)

The state of Chihuahua contains some of the most important limestone-hosted ore deposits in Mexico. The best example are Santa Eulalia and Naica which together have produced 53 million tons or ore averaging 7.7% Pb, 6.4% Zn, and 280 g/ton Ag. These deposits occur as mantos and chimneys often accompanied by calc-silicates. Among the most critical questions in this type of deposit is the control that the limestone-host exerts on the mineralizing process. Here the authors present the first detailed data on the stratigraphic and lithologic character of the limestone-hosts at Naica and Santa Eulalia. All ore at Naica and Santa Eulalia is hosted by micrites, biomicrites and biosparites indicative of generally quiet marine deposition. The authors work suggests that the western edge of the this trough might be a low angle, east dipping ramp which extends below the Sierra Madre Occidental. The primary permeability of the limestone that hosts Naica and Santa Eulalia is in the micro to nanodarcy range. The effective permeability has been augmented by 3 or 4 stages of micro-fracturing. Most of the ore is controlled by these fractures and by felsic dikes, which in cases are mostly endoskarn. Stylolites also appear to have exerted a control on the mineralizing process. Numerous instances of alteration and recrystallization confined to one side of a horizontal stylolite have been noted. At Santa Eulalia, horizontal stylolites have controlled the emplacement of massive sulfide mantos, suggesting that the mineralizing process was rather passive.

Lofquist, D.J.; Ruiz, J.

1985-01-01T23:59:59.000Z

86

Petrologic and stable isotopic evidence for reaction-enhanced fluid flow during metamorphism of Precambrian-Cambrian sedimentary rocks, Lone Mountain, Nevada  

SciTech Connect (OSTI)

Upper Precambrian to Cambrian sedimentary rocks, regionally metamorphosed during the Mesozoic to produce marbles and calc-silicate rocks, were contact metamorphosed at the end of the Cretaceous by the Lone Mountain granitic pluton. Mineral assemblages within the calc-silicates were in equilibrium with H[sub 2]O-rich fluids, while the marbles were in equilibrium with more CO[sub 2]-rich fluids. Mineralogical variation between two different calc-silicate lithologies is the result of differences in bulk rock chemical composition, which also results in differences in isotopic composition between the calc-silicate lithologies. delta O-18 and delta C-13 values show differences of greater than 6 and 4 per mil respectively across lithologic boundaries between interlayered calc-silicates and between interlayered marbles and calc-silicates. The absence of any systematic variation between delta O-18 and delta C-13 values in the calc-silicates suggests that isotopic variation due to decarbonation reactions was limited. The differences in mineralogy and isotopic composition indicate that permeability was enhanced by reaction, permitting the focused flow of fluid through the calc-silicates. Calculated mass balance variations in delta O-18 based on reaction space analysis and Rayleigh decarbonation cannot explain the observed variations of delta O-18, requiring infiltration of externally derived fluids, while the delta C-13 compositions in the calc-silicates can be explained by Rayleigh decarbonation alone.

Richards, I.J.; Labotka, T.C. (Univ. of Tennessee, Knoxville, TN (United States). Dept. of Geochemical Sciences)

1992-01-01T23:59:59.000Z

87

Microwave assisted hard rock cutting  

DOE Patents [OSTI]

An apparatus for the sequential fracturing and cutting of subsurface volume of hard rock (102) in the strata (101) of a mining environment (100) by subjecting the volume of rock to a beam (25) of microwave energy to fracture the subsurface volume of rock by differential expansion; and , then bringing the cutting edge (52) of a piece of conventional mining machinery (50) into contact with the fractured rock (102).

Lindroth, David P. (Apple Valley, MN); Morrell, Roger J. (Bloomington, MN); Blair, James R. (Inver Grove Heights, MN)

1991-01-01T23:59:59.000Z

88

Rock Sampling At U.S. West Region (Krohn, Et Al., 1993) | Open Energy  

Open Energy Info (EERE)

U.S. West Region (Krohn, Et Al., 1993) U.S. West Region (Krohn, Et Al., 1993) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At U.S. West Region (Krohn, Et Al., 1993) Exploration Activity Details Location U.S. West Region Exploration Technique Rock Sampling Activity Date Usefulness useful DOE-funding Unknown Notes Over 30 disseminated gold or hot-spring deposits in the western U.S. were sampled for ammonium-bearing minerals during field reconnaissance studies (Figs. l and 2). Wholerock samples, approximately 3 cm across, were collected from primarily feldspathic or argillaceous lithologies and measured on a laboratory near-infrared spectrometer (Krohn and Altaner, 1987). References M. Dennis Krohn, Carol Kendall, John R. Evans, Terry L. Fries (1993)

89

Anisotropy parameters estimate and rock physics analysis for the Barnett Shale  

Science Journals Connector (OSTI)

The rock physics model is an important tool for the characterization of shale reservoirs. We propose an improved anisotropic rock physics model of shale by introducing clay lamination (CL) index as a modeling parameter in effective medium theories. The parameter CL describes the degree of preferred orientation in distributions of clay particles, which depends on deposition and diagenesis history and determines intrinsic anisotropy of shales. Those complicated parameters of sophisticated methods that are difficult to quantify are substituted by CL. The applications of the proposed rock physics method include the inversion for anisotropy parameters using log data and the construction of a rock physics template for the evaluation of the Barnett Shale reservoir. Results show reasonable agreement between the P-wave anisotropy parameter ? inverted by the proposed method and those measured from core samples. The constructed rock physics templates are calibrated on well log data, and can be used for the evaluation of porosity, lithology, and brittleness index defined in terms of mineralogy and geomechanical properties of the Barnett Shale. The templates predict that the increase in clay content leads to the increase in Poisson's ratio and the decrease in Young's modulus on each line of constant porosity, which confirms the consistent and reveals quantitative relations of the two ways of defining the brittleness index. Different scenarios of mineralogy substitutions present the varied layout of constant lines on the templates.

Zhiqi Guo; Xiang-Yang Li; Cai Liu

2014-01-01T23:59:59.000Z

90

Timing and tectonic setting of the Sijiaying banded iron deposit in the eastern Hebei province, North China Craton: Constraints from geochemistry and SIMS zircon U–Pb dating  

Science Journals Connector (OSTI)

Abstract The North China Craton (NCC), one of the oldest continental blocks in Asia, has a complicated evolutionary history with the age of the old crust up to 3.8 Ga and records the important geological events of the Earth. The Sijiaying BIF, the largest banded iron formation located in eastern Hebei province, in the east part of NCC, records an important thermo-tectonic event; Previous studies focused on the geological description, but the timing and tectonic setting have been unclear so far. The Sijiaying BIF is hosted in Neoarchean metamorphic rocks, which includes biotite-leptynite, hornblende plagioclase-gneiss and biotite plagioclase-gneiss. Using major element contents and ratios of the host rocks, the protoliths of the hornblende plagioclase-gneiss and biotite plagioclase-gneiss are shown to be dacite, whereas those of the biotite-leptynites are sedimentary rocks. Based on geology and geochemistry of the host rocks, we infer that the Sijiaying BIF is an Algoma type deposit. SIMS zircon U–Pb dating shows: igneous zircons from the biotite plagioclase-gneiss and hornblende plagioclase-gneiss have U–Pb ages of 2535 ± 8 Ma and 2543 ± 14 Ma, respectively; zircons from the biotite-leptynite have an age of 2537 ± 13 Ma. We infer that the ages of 2543–2535 Ma represent the time of the Sijiaying BIF. PAAS-normalized REY profiles of the ore samples are characterized by LREE depletion and HREE enrichment, positive La and Eu anomalies and an average Y/Ho weight ratio of 32, indicating a mixture of submarine hydrothermal fluids and deep seawater. REE data was combined with the ?18O analyzed by previous researcher of the ore from individual magnetite bands to infer that the Sijiaying BIF precipitated from hydrothermal fluids discharging on the sea floor. The hornblende plagioclase-gneiss and biotite plagioclase-gneiss that are enriched in LILE and LREE and depleted in high field strength elements (HFSE) Nb, Ta and Ti, have geochemical signatures that are similar to those of island-arc volcanic rocks. The biotite-leptynite shows the characteristics of continental island-arc. Based on the geology and geochemistry of associated wall-rocks and ore samples, we suggest that the Sijiaying BIF formed in a back-arc basin in Neoarchean.

Minli Cui; Lianchang Zhang; Huaying Wu; Yingxia Xu; Wenjun Li

2014-01-01T23:59:59.000Z

91

Comparative characteristics of the lithological composition of the incised valley filland host sediments of the Vikulovo Formation, Kamenny area, West Siberia  

Science Journals Connector (OSTI)

Comparative characteristics of the lithological composition of estuarine incised valley fill, as well as the enclosing and...1, VK2, and VK3...), in the productive part of the Vikulovo Formation (upper Aptian), K...

A. L. Medvedev; A. Yu. Lopatin; Yu. V. Masalkin

2011-07-01T23:59:59.000Z

92

Micropaleontologic and lithologic characteristics of the contact between the Midway and Wilcox groups of central Milam and southeastern Falls counties, Texas  

E-Print Network [OSTI]

NICROPALEONTOLOGIC A?D LITHOLOGIC CHARACTERISTICS OF THE COETACT BETWEEH THE MIDWAY ARD WILCOI GROUPS OF CENTRAL MILAN AED SOUTHEASTERE FALLS COUETIES ~ TEEAS A Thesis By Superb Poobrasert Submitted to the Graduate School... of the Agricultural and Neohanioal College of Texas in partial flQflllment of the requireaents for the degree of MASTER OF SCIEWCE May, 1961 Ma)or Sub]ect& Geology MICBOPALEONTOLOGIC AND LITHOLOGIC CHARACTERISTICS OF THE CONTACT BETWEEN THE MIDWAY AND WILCOX...

Poobrasert, Suparb

2012-06-07T23:59:59.000Z

93

Water geochemistry study of Indian Wells Valley, Inyo and Kern Counties,  

Open Energy Info (EERE)

geochemistry study of Indian Wells Valley, Inyo and Kern Counties, geochemistry study of Indian Wells Valley, Inyo and Kern Counties, California. Supplement. Isotope geochemistry and Appendix H. Final report Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Water geochemistry study of Indian Wells Valley, Inyo and Kern Counties, California. Supplement. Isotope geochemistry and Appendix H. Final report Details Activities (4) Areas (4) Regions (0) Abstract: Hydrogen and oxygen isotope data on waters of Indian Wells Valley, the Sierra, Rose Valley, and Coso thermal and nonthermal waters were studied. The isotope ratios of Sierran waters are a function of latitude with both ratios becoming depleted in the heavier isotopes from south to north. Assuming that groundwater recharge is from the Sierra, recharge areas for the various groundwater types can be designated.

94

Overview - Hard Rock Penetration  

SciTech Connect (OSTI)

The Hard Rock Penetration program is developing technology to reduce the costs of drilling and completing geothermal wells. Current projects include: lost circulation control, rock penetration mechanics, instrumentation, and industry/DOE cost shared projects of the Geothermal Drilling Organization. Last year, a number of accomplishments were achieved in each of these areas. A new flow meter being developed to accurately measure drilling fluid outflow was tested extensively during Long Valley drilling. Results show that this meter is rugged, reliable, and can provide useful measurements of small differences in fluid inflow and outflow rates. By providing early indications of fluid gain or loss, improved control of blow-out and lost circulation problems during geothermal drilling can be expected. In the area of downhole tools for lost circulation control, the concept of a downhole injector for injecting a two-component, fast-setting cementitious mud was developed. DOE filed a patent application for this concept during FY 91. The design criteria for a high-temperature potassium, uranium, thorium logging tool featuring a downhole data storage computer were established, and a request for proposals was submitted to tool development companies. The fundamental theory of acoustic telemetry in drill strings was significantly advanced through field experimentation and analysis. A new understanding of energy loss mechanisms was developed.

Dunn, James C.

1992-03-24T23:59:59.000Z

95

Overview: Hard Rock Penetration  

SciTech Connect (OSTI)

The Hard Rock Penetration program is developing technology to reduce the costs of drilling and completing geothermal wells. Current projects include: lost circulation control, rock penetration mechanics, instrumentation, and industry/DOE cost shared projects of the Geothermal Drilling organization. Last year, a number of accomplishments were achieved in each of these areas. A new flow meter being developed to accurately measure drilling fluid outflow was tested extensively during Long Valley drilling. Results show that this meter is rugged, reliable, and can provide useful measurements of small differences in fluid inflow and outflow rates. By providing early indications of fluid gain or loss, improved control of blow-out and lost circulation problems during geothermal drilling can be expected. In the area of downhole tools for lost circulation control, the concept of a downhole injector for injecting a two-component, fast-setting cementitious mud was developed. DOE filed a patent application for this concept during FY 91. The design criteria for a high-temperature potassium, uranium, thorium logging tool featuring a downhole data storage computer were established, and a request for proposals was submitted to tool development companies. The fundamental theory of acoustic telemetry in drill strings was significantly advanced through field experimentation and analysis. A new understanding of energy loss mechanisms was developed.

Dunn, J.C.

1992-08-01T23:59:59.000Z

96

Rock Properties Model  

SciTech Connect (OSTI)

The purpose of this model report is to document the Rock Properties Model version 3.1 with regard to input data, model methods, assumptions, uncertainties and limitations of model results, and qualification status of the model. The report also documents the differences between the current and previous versions and validation of the model. The rock properties model provides mean matrix and lithophysae porosity, and the cross-correlated mean bulk density as direct input to the ''Saturated Zone Flow and Transport Model Abstraction'', MDL-NBS-HS-000021, REV 02 (BSC 2004 [DIRS 170042]). The constraints, caveats, and limitations associated with this model are discussed in Section 6.6 and 8.2. Model validation accomplished by corroboration with data not cited as direct input is discussed in Section 7. The revision of this model report was performed as part of activities being conducted under the ''Technical Work Plan for: The Integrated Site Model, Revision 05'' (BSC 2004 [DIRS 169635]). The purpose of this revision is to bring the report up to current procedural requirements and address the Regulatory Integration Team evaluation comments. The work plan describes the scope, objectives, tasks, methodology, and procedures for this process.

C. Lum

2004-09-16T23:59:59.000Z

97

Neutron and Gamma Ray Scattering Measurements for Subsurface Geochemistry  

Science Journals Connector (OSTI)

...subsurface porous rocks that covers a large...academic definition ofa reservoir is made more precise...areal extent, porosity, hydrocarbon content...possibility for the reservoir to be profitable...the assessment of rock formation properties...analyses ofporosity, permeability, and hydrocarbon...

Darwin V. Ellis

1990-10-05T23:59:59.000Z

98

Spatial characteristic of coal geochemistry: Some methodological considerations  

SciTech Connect (OSTI)

Identification and analysis of spatial patterns in coal geochemistry have important implications in coal science, notably for coal quality prediction, resource evaluation, and for interpretation of geological controls on coal geochemistry. Contour maps of elemental concentration for coal deposits may be reconstructed from raw data by using one of a number of interpolation methods commonly used within the earth sciences. Within a Geographic Information System (GIS), these surfaces may then be analyzed, and be integrated or compared with the distribution surfaces of other attributes such as coal petrography, seam thickness or mineralogy. The exact shape of the reconstructed geochemical contour map will vary depending on the method of interpolation selected and how the researcher chooses to divide data into classes by selection of class intervals. This paper and the associated poster presentation examine the range of output which may result when some of these methodological parameters are varied. Guidelines for selection of interpolation methodologies and data classification are suggested. A data set consisting of 14 coal samples from the Bullmoose mine area in northeastern British Columbia, Canada is used to illustrate the difference in coal geochemical surface reconstruction when using different interpolation techniques and class intervals.

Flier-Keller, E. Van Der; Bartier, P.; Keller, C.P. [Univ. of Victoria, British Columbia (Canada)

1994-12-31T23:59:59.000Z

99

Project Work Plan Chromium Vadose Zone Characterization and Geochemistry  

SciTech Connect (OSTI)

The major objectives of the proposed study are to 1) determine the leaching characteristics of Cr(VI) from contaminated sediments collected from 100 area spill sites, 2) elucidate possible Cr(VI) mineral and/or chemical associations that may be responsible for Cr(VI) retention in the Hanford site 100 areas through the use of i) macroscopic solubility studies and ii) microscale characterization of contaminated sediments, and 3) from these data construct a conceptual model of Cr(VI) geochemistry in the Hanford 100 area vadose zone. These objectives are based on locating and obtaining contaminated sediment with depth and at varying Cr(VI) concentrations as we hypothesize that mineral/chemical-Cr(VI) associations should be related to the total Cr concentration and other master geochemical variables (e.g., pH, counter-cation type and concentration, and water content). In addressing these objectives, additional benefits accrued will be (1) a fuller understanding of Cr(VI) entrained in the vadose zone that will that can be utilized in modeling potential Cr(VI) source terms, and 2) accelerating the Columbia River 100 area corridor cleanup by developing remedial action based on a fundamental understanding of Cr(VI) vadose zone geochemistry.

Ainsworth, Calvin C.

2006-05-23T23:59:59.000Z

100

Geochemistry, toxicity, and sorption properties of contaminated sediments and pore waters  

E-Print Network [OSTI]

Geochemistry, toxicity, and sorption properties of contaminated sediments and pore waters from two chemistry, sorption properties, and toxicity were determined on several samples. Metal concentrations and desorption experiments for Cu, Zn, and Cd on composite sediment samples demonstrated typical sorption

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Interactions between mantle plumes and mid-ocean ridges : constraints from geophysics, geochemistry, and geodynamical modeling  

E-Print Network [OSTI]

This thesis studies interactions between mid-ocean ridges and mantle plumes using geophysics, geochemistry, and geodynamical modeling. Chapter 1 investigates the effects of the Marion and Bouvet hotspots on the ultra-slow ...

Georgen, Jennifer E

2001-01-01T23:59:59.000Z

102

Open-system Behavior during Pluton^Wall-rock Interaction as Constrained from a Study of  

E-Print Network [OSTI]

upon entering clinopyroxene-rich lithologies. Mass-balance calculations, based on theory and residual

Lee, Cin-Ty Aeolus

103

The distribution and geochemistry of iridium in river suspended material and marine sediments  

E-Print Network [OSTI]

THE DISTRIBUTION AND GEOCHEMISTRY OF IRIDIUM IN RIVER SUSPENDED MATERIAL AND MARINE SEDIMENTS A Thesis by FREDERICK DONALD FENNER Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1983 Ma j or Sub j ect: Oceanography THE DISTRIBUTION AND GEOCHEMISTRY OF IRIDIUM IN RIVER SUSPENDED MATERIAL AND MARINE SEDIMENTS A Thesis by FREDERICK DONALD FENNER Approved as to style and content by: (Chai man...

Fenner, Frederick Donald

2012-06-07T23:59:59.000Z

104

Barite–Celestine Geochemistry and Environments of Formation  

Science Journals Connector (OSTI)

...Disposal of barite drilling muds. Dial and Huff...of an elephant: Boling dome. In Native Sulfur: Developments...strontium-rich cap rock, Tatum Dome, Mississippi, U.S...results from the deep sea drilling project. Geochim Cosmochim...

Jeffrey S. Hanor

105

On the Geochemistry of Venice Lagoon Sediments. Scripps Institution of Oceanography SEDiment Research Program – SIOSED. A Background Report  

E-Print Network [OSTI]

profiles of wet marine sediments. Geochemistry, Geophysics,2006). New techniques in sediment core analysis. Geol.Soc.1997). Metal fluxes to the sediments of the northern Venice

2011-01-01T23:59:59.000Z

106

Life Under Rocks Grade Level: First  

E-Print Network [OSTI]

. Procedure: Find a small and large rock (rock should be on a solid surface and not sunk in sand or muck

107

Geochemistry And Geothermometry Of Spring Water From The Blackfoot  

Open Energy Info (EERE)

Geothermometry Of Spring Water From The Blackfoot Geothermometry Of Spring Water From The Blackfoot Reservoir Region, Southeastern Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geochemistry And Geothermometry Of Spring Water From The Blackfoot Reservoir Region, Southeastern Idaho Details Activities (3) Areas (1) Regions (0) Abstract: The Blackfoot Reservoir region in southeastern Idaho is recognized as a potential geothermal area because of the presence of several young rhyolite domes (50,000 years old), Quaternary basalt flows, and warm springs. North- to northwest-trending high-angle normal faults of Tertiary to Holocene age appear to be the dominant structural control of spring activity. Surface spring-water temperatures average 14°C except for a group of springs west of the Reservoir Mountains which average 33°C.

108

Shotgun cartridge rock breaker  

DOE Patents [OSTI]

A rock breaker uses shotgun cartridges or other firearm ammunition as the explosive charge at the bottom of a drilled borehole. The breaker includes a heavy steel rod or bar, a gun with a firing chamber for the ammunition which screws onto the rod, a long firing pin running through a central passage in the rod, and a firing trigger mechanism at the external end of the bar which strikes the firing pin to fire the cartridge within the borehole. A tubular sleeve surround the main body of the rod and includes slits the end to allow it to expand. The rod has a conical taper at the internal end against which the end of the sleeve expands when the sleeve is forced along the rod toward the taper by a nut threaded onto the external end of the rod. As the sleeve end expands, it pushes against the borehole and holds the explosive gasses within, and also prevents the breaker from flying out of the borehole. The trigger mechanism includes a hammer with a slot and a hole for accepting a drawbar or drawpin which, when pulled by a long cord, allows the cartridge to be fired from a remote location.

Ruzzi, Peter L. (Eagan, NM); Morrell, Roger J. (Bloomington, MN)

1995-01-01T23:59:59.000Z

109

Post Rock | Open Energy Information  

Open Energy Info (EERE)

Rock Rock Jump to: navigation, search Name Post Rock Facility Post Rock Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Wind Capital Group Developer Wind Capital Group Energy Purchaser Westar Energy Location Ellsworth KS Coordinates 38.87269233°, -98.33059788° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.87269233,"lon":-98.33059788,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

110

Age of Goose Rock Conglomerate, Wheele and Grant Counties, north-central Oregon  

SciTech Connect (OSTI)

A reconstruction of the geologic history and synthesis of the tectonic history of the Blue Mountains and Columbia Basin require that they know the age of key outcrops. The geological record in this entire area has been largely hidden by a thick blanket of Tertiary volcanic rocks. Only a few erosional inliers are available from which to interpret the pre-volcanic tectonic and sedimentation history. The Goose Rock Inlier, exposed along the John Day River in the Butler basin and Turtle Cove, is one such important outcrop. These exposures, consisting of a few hundred feet of fluvial sandstones and conglomerates, informally called the Goose Rock Conglomerate have received only limited attention from previous workers. Estimates of this unit's age range from Early Cretaceous to early Tertiary, on the basis of lithologic similarities with other named and unnamed formations in the area. The terrestrial nature of these strata and the apparent lack of fossils cause considerable difficulty in correlation with other Cretaceous sequences, which are largely marine. In the absence of scarcity of other fossils, palynology offers a unique alternative for making biochronological and paleoenvironmental interpretations.

Aguirre, M.R.; Fisk, L.H.

1987-08-01T23:59:59.000Z

111

GEOL 103 Writing Assignment 3. Sedimentary Rocks Name _______________________  

E-Print Network [OSTI]

.g., kaolinite), halite (rock salt), gypsum, occasionally micas (muscovite, biotite). Sed rocks can also contain

Kirby, Carl S.

112

The East Kemptville topaz-muscovite leucogranite, Nova Scotia; I, Geological setting and whole-rock geochemistry  

Science Journals Connector (OSTI)

...3 t 3. 7 ! 4. 7 ! L. 5 *Toial ileber of, points co@ted wlth ths Eoe t 1 stsdard dsvlacloa for oach uLneraL. Nots tlut...geochemicaldata-basefor the SouthMountain Batholith. C. Poulin, minegeologistat EastKemptville,is acknowledged for his continuedsuppon...

D. J. Kontak

113

Lithologic, mineralogical, and petrophysical characteristics of the Eau Claire Formation: Complexities of a carbon storage system seal  

Science Journals Connector (OSTI)

...Apache Energy, use CO2 from a nearby coal gasification plant, and their project represents...He continues to consult the energy industry on issues related to overpressure development...disposal United States Upper Cambrian waste disposal whole rock X-ray diffraction...

Ryan J. Neufelder; Brenda B. Bowen; Richard W. Lahann; John A. Rupp

114

Multiscale heterogeneity characterization of tidal channel, tidal delta and foreshore facies, Almond Formation outcrops, Rock Springs uplift, Wyoming  

SciTech Connect (OSTI)

In order to accurately predict fluid flow within a reservoir, variability in the rock properties at all scales relevant to the specific depositional environment needs to be taken into account. The present work describes rock variability at scales from hundreds of meters (facies level) to millimeters (laminae) based on outcrop studies of the Almond Formation. Tidal channel, tidal delta and foreshore facies were sampled on the eastern flank of the Rock Springs uplift, southeast of Rock Springs, Wyoming. The Almond Fm. was deposited as part of a mesotidal Upper Cretaceous transgressive systems tract within the greater Green River Basin. Bedding style, lithology, lateral extent of beds of bedsets, bed thickness, amount and distribution of depositional clay matrix, bioturbation and grain sorting provide controls on sandstone properties that may vary more than an order of magnitude within and between depositional facies in outcrops of the Almond Formation. These features can be mapped on the scale of an outcrop. The products of diagenesis such as the relative timing of carbonate cement, scale of cemented zones, continuity of cemented zones, selectively leached framework grains, lateral variability of compaction of sedimentary rock fragments, and the resultant pore structure play an equally important, although less predictable role in determining rock property heterogeneity. A knowledge of the spatial distribution of the products of diagenesis such as calcite cement or compaction is critical to modeling variation even within a single facies in the Almond Fin. because diagenesis can enhance or reduce primary (depositional) rock property heterogeneity. Application of outcrop heterogeneity models to the subsurface is greatly hindered by differences in diagenesis between the two settings. The measurements upon which this study is based were performed both on drilled outcrop plugs and on blocks.

Schatzinger, R.A.; Tomutsa, L. [BDM Petroleum Technologies, Bartlesville, OK (United States)

1997-08-01T23:59:59.000Z

115

Mechanical properties and modeling of seal-forming lithologies. Technical progress report No. 2, March 15, 1991--March 14, 1992  

SciTech Connect (OSTI)

Both rocksalt and shale lithologies are actively deformed in response to gravitational loads associated with deposition, and both form effective seals to petroleum and natural gas. Thus, the shapes of seal-forming units, and the nature of fractures and faults that may breach them depend upon either the mechanical properties of salt or those of shale, and the loading histories to which they have been subjected. The objectives of this research include the determination of the mechanical properties under controlled conditions of well-characterized shales, and the numerical modeling of rocksalt (and eventually shale) formations using laboratory-based rheologies. Progress has been made towards these goals over this project period, both in our experimental program on shale deformation and model development for the growth of salt diapirs. The mechanical anisotropy of an illite-bearing shale from Louisiana has been determined and related to the preferred orientation and distribution of clays. Its strength in the absence of pore fluids has been determined at confining pressures of up to 250 MPa and at high pressure we have investigated the effects of deformation rate and temperature. A numerical finite difference code has been developed to solve the incompressible Navier-Stokes equations and validated using a two- layer linear viscous model for which analytic solutions are available. Although the code has only been validated for the linear viscous case, it is capable of solving for highly nonlinear constitutive laws as well as solving for arbitrary interfaces between the salt and overburden.

Kronenberg, A.K.; Russell, J.E.; Carter, N.L.; Ibanez, W.; Mazariegos, R.

1992-04-01T23:59:59.000Z

116

1 INTRODUCTION The geochemistry of clayrocks is of current inter-  

E-Print Network [OSTI]

of facilities for nuclear waste (radwaste) disposal and greenhouse gas storage. The low permeability and porosity of these rocks allow very good confinement of both radwastes and CO2(g). In both cases, long term of research on the long-term evolution of ma- terials used in the context of nuclear disposal (nu- clear glass

Boyer, Edmond

117

FLUID GEOCHEMISTRY AT THE RAFT RIVER GEOTHERMAL FIELD, IDAHO- NEW DATA AND  

Open Energy Info (EERE)

FLUID GEOCHEMISTRY AT THE RAFT RIVER GEOTHERMAL FIELD, IDAHO- NEW DATA AND FLUID GEOCHEMISTRY AT THE RAFT RIVER GEOTHERMAL FIELD, IDAHO- NEW DATA AND HYDROGEOLOGICAL IMPLICATIONS Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: FLUID GEOCHEMISTRY AT THE RAFT RIVER GEOTHERMAL FIELD, IDAHO- NEW DATA AND HYDROGEOLOGICAL IMPLICATIONS Details Activities (1) Areas (1) Regions (0) Abstract: Following a period of exploration and development in the mid-late 1970's, there was little activity at the Raft River geothermal field for the next ~20 years. US Geothermal Inc. acquired the project in 2002, and began commercial power generation in January 2008. From mid-2004 to present, US Geothermal Inc. has collected geochemical data from geothermal and monitoring wells in the field, as well as other shallow wells in the

118

Geochemistry of the Wendel-Amedee Geothermal System-California | Open  

Open Energy Info (EERE)

Geochemistry of the Wendel-Amedee Geothermal System-California Geochemistry of the Wendel-Amedee Geothermal System-California Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geochemistry of the Wendel-Amedee Geothermal System-California Abstract The fluid chemistry of the geothermal system that feed Amedee and Wendel Hot Springs in eastern California is complex. Two thermal fluids have been identified based on the concentrations of the conservative elements C1 and B, fluid enthalpies, and the application of chemical geothermometers. One is characterized by temperatures above 120°C and a TDS content of 1300 ppm, and will be used by GeoProducts Corporation to produce electricity. The second did lower in temperature, 75°C, and has a TDS content of 650 ppm. This fluid may be used fore direct heat application at the Susanville

119

Geology, isotope geochemistry and ore genesis of the Shanshulin carbonate-hosted Pb–Zn deposit, southwest China  

Science Journals Connector (OSTI)

Abstract The Shanshulin Pb–Zn deposit occurs in Upper Carboniferous Huanglong Formation dolomitic limestone and dolostone, and is located in the western Yangtze Block, about 270 km west of Guiyang city in southwest China. Ore bodies occur along high angle thrust faults affiliated to the Weishui regional fault zone and within the northwestern part of the Guanyinshan anticline. Sulfide ores are composed of sphalerite, pyrite, and galena that are accompanied by calcite and subordinate dolomite. Twenty-two ore bodies have been found in the Shanshulin deposit area, with a combined 2.7 million tonnes of sulfide ores grading 0.54 to 8.94 wt.% Pb and 1.09 to 26.64 wt.% Zn. Calcite samples have ?13CPDB and ?18OSMOW values ranging from ? 3.1 to + 2.5‰ and + 18.8 to + 26.5‰, respectively. These values are higher than mantle and sedimentary organic matter, but are similar to marine carbonate rocks in a ?13CPDB vs. ?18OSMOW diagram, suggesting that carbon in the hydrothermal fluid was most likely derived from the carbonate country rocks. The ?34SCDT values of sphalerite and galena samples range from + 18.9 to + 20.3‰ and + 15.6 to + 17.1‰, respectively. These values suggest that evaporites are the most probable source of sulfur. The ?34SCDT values of symbiotic sphalerite–galena mineral pairs indicate that deposition of sulfides took place under chemical equilibrium conditions. Calculated temperatures of S isotope thermodynamic equilibrium fractionation based on sphalerite–galena mineral pairs range from 135 to 292 °C, consistent with previous fluid inclusion studies. Temperatures above 100 °C preclude derivation of sulfur through bacterial sulfate reduction (BSR) and suggest that reduced sulfur in the hydrothermal fluid was most likely supplied through thermo-chemical sulfate reduction (TSR). Twelve sphalerite samples have ?66Zn values ranging from 0.00 to + 0.55‰ (mean + 0.25‰) relative to the JMC 3-0749L zinc isotope standard. Stages I to III sphalerite samples have ?66Zn values ranging from 0.00 to + 0.07‰, + 0.12 to + 0.23‰, and + 0.29 to + 0.55‰, respectively, showing the relatively heavier Zn isotopic compositions in later versus earlier sphalerite. The variations of Zn isotope values are likely due to kinetic Raleigh fractional crystallization. The 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb ratios of the sulfide samples fall in the range of 18.362 to 18.573, 15.505 to 15.769 and 38.302 to 39.223, respectively. The Pb isotopic ratios of the studied deposit plot in the field that covers the upper crust, orogenic belt and mantle Pb evolution curves and overlaps with the age-corrected Proterozoic folded basement rocks, Devonian to Lower Permian sedimentary rocks and Middle Permian Emeishan flood basalts in a 207Pb/204Pb vs. 206Pb/204Pb diagram. This observation points to the derivation of Pb metal from mixed sources. Sphalerite samples have 87Sr/86Sr200 Ma ratios ranging from 0.7107 to 0.7115 similar to the age-corrected Devonian to Lower Permian sedimentary rocks (0.7073 to 0.7111), higher than the age-corrected Middle Permian basalts (0.7039 to 0.7078), and lower than the age-corrected Proterozoic folded basement (0.7243 to 0.7288). Therefore, the Sr isotope data support a mixed source. Studies on the geology and isotope geochemistry suggest that the Shanshulin deposit is a carbonate-hosted, thrust fault-controlled, strata-bound, epigenetic, high grade deposit formed by fluids and metals of mixed origin.

Jia-Xi Zhou; Zhi-Long Huang; Zhi-Cheng Lv; Xiang-Kun Zhu; Jian-Guo Gao; Hassan Mirnejad

2014-01-01T23:59:59.000Z

120

PARKER-HEADGATE ROCK & PARKER-GILA  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PARKER-HEADGATE ROCK & PARKER-GILA 161-kV TRANSMISSION LINE Cross Arm Repair and Helicopter Staging Areas Figure 1. Project Location Project Location j PARKER-HEADGATE ROCK &...

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Microbial Impacts to the Near-Field Environment Geochemistry (MING): A Model for Estimating Microbial Communities in Repository Drifts at Yucca Mountain  

SciTech Connect (OSTI)

Geochemical and microbiological modeling was performed to evaluate the potential quantities and impact of microorganisms on the geochemistry of the area adjacent to and within nuclear waste packages in the proposed repository drifts at Yucca Mountain, Nevada. The microbial growth results from the introduction of water, ground support, and waste package materials into the deep unsaturated rock. The simulations, which spanned one million years, were accomplished using a newly developed computer code, Microbial Impacts to the Near-Field Environment Geochemistry (MING). MING uses environmental thresholds for limiting microbial growth to temperatures below 120 C and above relative humidities of 90 percent in repository drifts. Once these thresholds are met, MING expands upon a mass balance and thermodynamic approach proposed by McKinley and others (1997), by using kinetic rates to supply constituents from design materials and constituent fluxes including solubilized rock components into the drift, to perform two separate mass-balance calculations as a function of time. The first (nutrient limit) assesses the available nutrients (C, N, P and S) and calculates how many microorganisms can be produced based on a microorganism stoichiometry of C{sub 160}(H{sub 280}O{sub 80})N{sub 30}P{sub 2}S. The second (energy limit) calculates the energy available from optimally combined redox couples for the temperature, and pH at that time. This optimization maximizes those reactions that produce > 15kJ/mol (limit on useable energy) using an iterative linear optimization technique. The final available energy value is converted to microbial mass at a rate of 1 kg of biomass (dry weight) for every 64 MJ of energy. These two values (nutrient limit and energy limit) are then compared and the smaller value represents the number of microorganisms that can be produced over a specified time. MING can also be adapted to investigate other problems of interest as the model can be used in saturated and unsaturated environments and in laboratory situations to establish microbial growth limitations. Other projected uses include investigations of contaminated locations where monitored natural attenuation or engineered bioremediation could be employed.

D.M. Jolley; T.F. Ehrhorn; J. Horn

2002-03-19T23:59:59.000Z

122

Rock magnetism of remagnetized carbonate rocks: another look MIKE JACKSON* & NICHOLAS L. SWANSON-HYSELL  

E-Print Network [OSTI]

Rock magnetism of remagnetized carbonate rocks: another look MIKE JACKSON* & NICHOLAS L. SWANSON-HYSELL Institute for Rock Magnetism, Winchell School of Earth Sciences, University of Minnesota, Minnesota, US, dominantly in the super- paramagnetic and stable single-domain size range, also give rise to distinctive rock-magnetic

Swanson-Hysell, Nicholas

123

Chapter 14 Treatise on Geochemistry Raman and Nuclear Resonant Spectroscopy in Geosciences  

E-Print Network [OSTI]

Chapter 14 Treatise on Geochemistry 1 Raman and Nuclear Resonant Spectroscopy in Geosciences Jung Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA Alexander F. Goncharov Geophysical technical advances in Raman and nuclear resonance spectroscopy (both Mössbauer spectroscopy and nuclear

Lin, Jung-Fu "Afu"

124

Linking Hydrothermal Geochemistry to Organismal Physiology: Physiological Versatility in Riftia pachyptila  

E-Print Network [OSTI]

Linking Hydrothermal Geochemistry to Organismal Physiology: Physiological Versatility in Riftia and oxygen to generate energy for carbon fixation, and the symbiont's nitrate reduction to ammonia for energy in the EPR and the Guaymas basin, a sedimented, hydrothermal vent field. We observed marked differences

Girguis, Peter R.

125

Microbiology and geochemistry of Little Hot Creek, a hot spring environment in the Long Valley Caldera  

E-Print Network [OSTI]

Microbiology and geochemistry of Little Hot Creek, a hot spring environment in the Long Valley springs located within the Long Valley Caldera, Little Hot Creek (LHC) 1, 3, and 4. All three springs were that springs associated with the Long Valley Caldera contain microbial populations that show some similarities

Ahmad, Sajjad

126

Detrital geochronology and geochemistry of CretaceousEarly Miocene strata of Nepal: implications for timing and  

E-Print Network [OSTI]

Detrital geochronology and geochemistry of Cretaceous­Early Miocene strata of Nepal: implications of the southern Lesser Himalayan zone of central Nepal. The Cretaceous­ Paleocene(?) Amile Formation is dominated documented by the U­Pb zircon ages. The fact that middle Eocene strata in Nepal were derived from

Najman, Yani

127

Environmental Geochemistry Research Program Dr. Bruce E. Herbert, Texas A&M University  

E-Print Network [OSTI]

Environmental Geochemistry Research Program Dr. Bruce E. Herbert, Texas A&M University Geology, South Tx. Recent Funded Research Projects Nonpoint Source Contaminants from South Texas Uranium Mines): Watershed-Scale bioavailability of arsenic released from South Texas uranium mines · Chris Markley, Ph

Herbert, Bruce

128

Dispersivity as an oil reservoir rock characteristic  

SciTech Connect (OSTI)

The main objective of this research project is to establish dispersivity, {alpha}{sub d}, as an oil reservoir rock characteristic and to use this reservoir rock property to enhance crude oil recovery. A second objective is to compare the dispersion coefficient and the dispersivity of various reservoir rocks with other rock characteristics such as: porosity, permeability, capillary pressure, and relative permeability. The dispersivity of a rock was identified by measuring the physical mixing of two miscible fluids, one displacing the other in a porous medium. 119 refs., 27 figs., 12 tabs.

Menzie, D.E.; Dutta, S.

1989-12-01T23:59:59.000Z

129

Elemental mixing systematics and SrNd isotope geochemistry of mlange formation: Obstacles to identification of  

E-Print Network [OSTI]

to identification of fluid sources to arc volcanics Robert L. King a,b,, Gray E. Bebout a,b , Takuya Moriguti b protoliths to form hybridized bulk compositions not typical of seafloor "input" lithologies. In general, all by the evolution of bulk composition within mélange zones are probably the most important control of solid, liquid

Bebout, Gray E.

130

Influence of rock mass fracturing on the net penetration rates of hard rock \\{TBMs\\}  

Science Journals Connector (OSTI)

Abstract Penetration rates during excavation using hard rock tunnel boring machines (TBMs) are significantly influenced by the degree of fracturing of the rock mass. In the NTNU prediction model for hard rock TBM performance and costs, the rock mass fracturing factor (ks) is used to include the influence of rock mass fractures. The rock mass fracturing factor depends on the degree of fracturing, fracture type, fracture spacing, and the angle between fracture systems and the tunnel axis. In order to validate the relationship between the degree of fracturing and the net penetration rate of hard rock TBMs, field work has been carried out, consisting of geological back-mapping and analysis of performance data from a TBM tunnel. The rock mass influence on hard rock TBM performance prediction is taken into account in the NTNU model. Different correlations between net penetration rate and the fracturing factor (ks) have been identified for a variety of ks values.

F.J. Macias; P.D. Jakobsen; Y. Seo; A. Bruland

2014-01-01T23:59:59.000Z

131

Water geochemistry of hydrothermal systems, Wood River District, Idaho  

SciTech Connect (OSTI)

Hydrothermal systems of the Wood River District, central Idaho, have been studied by geologic mapping of thermal spring areas and geochemical investigations of thermal and non-thermal waters. This report summarizes the new geochemical data gathered during the study. Integration of the results of geological and geochemical studies has led to development of a target model for hydrothermal resources on the margin of the Idaho Batholith. Warfield Hot Springs, with temperatures up to 58/sup 0/C, flow from a major shear zone along the margin of an apophysis of the batholith. Hailey Hot Springs, with temperatures up to 60/sup 0/C, occur in an area of multiple thrust faults and newly recognized, closely spaced normal faults in the Paleozoic Milligen and Wood River Formations, 2.5 km from a highly brecciated batholith contact. Other Wood River district hydrothermal systems also occur along the margins of batholith apophyses or in adjacent highly fractured Paleozoic rocks, where there are indications of batholith rocks at shallow depths (100 to 300 m) in water wells.

Zeisloft, J.; Foley, D.; Blackett, R.

1983-08-01T23:59:59.000Z

132

Hydrogeologic factors affecting cavern morphology within rocks of Mississippian age in northwestern Arkansas  

SciTech Connect (OSTI)

Cavern development within rocks of Mississippian age in northwestern Arkansas is associated with two Pleistocene erosional features, the Boston Mountains Plateau and the Springfield Plateau. Each plateau is characterized by a distinct stratigraphic sequence with unique lithologies. Cavern morphology (both cross-sectional and planimetric) in each plateau is the result of the complex interaction of numerous hydrogeologic factors. Four of the most dominant factors which affect cavern morphology appear to be: (1) composition and continuity of the confining units; (2) percentage of noncarbonate components in rocks of the cavern-forming interval; (3) nature and distribution of ground-water recharge to the cavern-forming interval; and (4) nature and distribution of fractures within the cavern-forming interval. Network maze patterns typically develop in the Pitkin Limestone, the formation in which most caverns form beneath the Boston Mountains Plateau. The Pitkin, a bioclastic limestone, is confined above by siltstones of the Cane Hill member of the Hale Formation and below by shales of the Fayetteville Formation. The maze pattern indicates that these caverns probably were formed by dissolution of the rock matrix by diffuse recharge moving vertically through leaky confining units. Single rooms are the dominant cavern morphology in the chert-dominated Boone Formation of the Springfield Plateau. Where the concentration of chert is greater than 50 percent, the Boone lacks structural integrity and fails to develop well-integrated conduit networks. Point recharge features in outcrop areas of the Boone Formation are not visible in most of the Springfield Plateau because the insoluble residuum masks the upper bedrock surface. Where the Boone Formation is less than 7 meters thick, surface karst features are more prevalent.

Fanning, B.J. (Univ. of Arkansas, Fayetteville, AR (United States). Dept. of Geology); Brahana, J.V. (Univ. of Arkansas , Fayetteville, AR (United States). Geological Survey)

1993-02-01T23:59:59.000Z

133

Validation of Innovative Exploration Technologies for Newberry Volcano: Geochemistry data from 55-29 and 46-16 wells at Newberry 2012  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Validation of Innovative Exploration Technologies for Newberry Volcano: Geochemistry data from 55-29 and 46-16 wells at Newberry 2012

Jaffe, Todd

134

Big Bang Day : Physics Rocks  

ScienceCinema (OSTI)

Is particle physics the new rock 'n' roll? The fundamental questions about the nature of the universe that particle physics hopes to answer have attracted the attention of some very high profile and unusual fans. Alan Alda, Ben Miller, Eddie Izzard, Dara O'Briain and John Barrowman all have interests in this branch of physics. Brian Cox - CERN physicist, and former member of 90's band D:Ream, tracks down some very well known celebrity enthusiasts and takes a light-hearted look at why this subject can appeal to all of us.

None

2011-04-25T23:59:59.000Z

135

Rock Energy Cooperative (Illinois) | Open Energy Information  

Open Energy Info (EERE)

Energy Cooperative (Illinois) Jump to: navigation, search Name: Rock Energy Cooperative Place: Illinois References: EIA Form EIA-861 Final Data File for 2010 - File220101 EIA...

136

Carbon-14 geochemistry at the Savannah River Site  

SciTech Connect (OSTI)

Carbon-14 is among the key radionuclides driving risk at the E-Area Low-Level Waste Disposal Facility on the Savannah River Site (SRS). Much of this calculated risk is believed to be the result of having to make conservative assumptions in risk calculations because of the lack of site-specific data. The original geochemical data package (Kaplan 2006) recommended that performance assessments and composite analyses for the SRS assume that {sup 14}C did not sorbed to sediments or cementitious materials, i.e., that C-14 K{sub d} value (solid:liquid concentration ratio) be set to 0 mL/g (Kaplan 2006). This recommendation was based primarily on the fact that no site-specific experimental work was available and the assumption that the interaction of anionic {sup 14}C as CO{sub 2}{sup 2-}) with similarly charged sediments or cementitious materials would be minimal. When used in reactive transport equations, the 0 mL/g Kd value results in {sup 14}C not interacting with the solid phase and moving quickly through the porous media at the same rate as water. The objective of this study was to quantify and understand how aqueous {sup 14}C, as dissolved carbonate, sorbs to and desorbs from SRS sediments and cementitious materials. Laboratory studies measuring the sorption of {sup 14}C, added as a carbonate, showed unequivocally that {sup 14}C-carbonate K{sub d} values were not equal to 0 mL/g for any of the solid phases tested, but they required several months to come to steady state. After six months of contact, the apparent K{sub d} values for a clayey sediment was 3,000 mL/g, for a sandy sediment was 10 mL/g, for a 36-year-old concrete was 30,000 mL/g, and for a reducing grout was 40 mL/g. Furthermore, it was demonstrated that (ad)sorption rates were appreciably faster than desorption rates, indicating that a kinetic sorption model, as opposed to the steady-state K{sub d} model, may be a more accurate description of the {sup 14}C-carbonate sorption process. A second study demonstrated that the {sup 14}C-carbonate sorbed very strongly onto the various materials and could not be desorbed by anion exchanged with high concentrations of carbonate or nitrate. High phosphate concentrations were able to desorb {sup 14}C-carbonate from the 36-year-old concrete sample, but not the clayey sediment sample. Together these geochemistry studies support the use of non-zero K{sub d} values in risk calculations on the SRS. For performance assessment (PA) calculations, {sup 14}C would be moving with the groundwater, remaining in contact with sediment for days, not months. Therefore for purposes of SRS risk calculations, it is appropriate to select sorption values after a couple days of contact, departing from the traditional definition that states K{sub d} values reflect the system under steady state conditions. Such an “apparent K{sub d} value,” would be expected to provide a better (and more conservative) estimate of what to expect under SRS PA conditions. Based on these results, recommended apparent K{sub d} values for use in the PA are 1 mL/g for sandy sediments and 30 mL/g for clayey sediments.

Roberts, Kimberly A.; Kaplan, Daniel I.

2013-05-10T23:59:59.000Z

137

Petrology and Geochemistry of Neoproterozoic Arc Plutons Beneath the Atlantic Coastal Plain, SRS, SC  

SciTech Connect (OSTI)

In this report is presented first a brief review of the regional geologic setting of the Savannah River Site, descriptions of the plutonic rock units sampled here, whole rock geochemical data on the plutonic igneous rocks, and finally, a discussion of how the crystalline basement rocks of the Savannah River Site formed and how they may correlate with other terranes exposed in the Piedmont of the Carolinas, Georgia, and Virginia.

Maryak, M.

1998-10-21T23:59:59.000Z

138

Surface Mercury Geochemistry As A Guide To Volcanic Vent Structure And  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Surface Mercury Geochemistry As A Guide To Volcanic Vent Structure And Zones Of High Heat Flow In The Valley Of Ten Thousand Smokes, Katmai National Park, Alaska Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Surface Mercury Geochemistry As A Guide To Volcanic Vent Structure And Zones Of High Heat Flow In The Valley Of Ten Thousand Smokes, Katmai National Park, Alaska Details Activities (2) Areas (1) Regions (0) Abstract: A reconnaissance survey of Hg° was designed to model the 1912 Novarupta vent structure and delineate zones of near-surface high heat

139

Gas Geochemistry Of The Valles Caldera Region, New Mexico And Comparisons  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Gas Geochemistry Of The Valles Caldera Region, New Mexico And Comparisons With Gases At Yellowstone, Long Valley And Other Geothermal Systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Gas Geochemistry Of The Valles Caldera Region, New Mexico And Comparisons With Gases At Yellowstone, Long Valley And Other Geothermal Systems Details Activities (18) Areas (8) Regions (0) Abstract: Noncondensible gases from hot springs, fumaroles, and deep wells within the Valles caldera geothermal system (210-300°C) consist of roughly 98.5 mol% CO2, 0.5 mol% H2S, and 1 mol% other components. 3He/4He ratios

140

Mechanical properties and modeling of seal-forming lithologies. Technical progress report No. 3, March 15, 1992--June 14, 1993  

SciTech Connect (OSTI)

Specific goals and accomplishments of this research include: (1) The evaluation of models of salt diaper ascent that involve either power law, dislocation creep as determined experimentally by Horseman et al. (1993) or linear, fluid-assisted creep as reported by Spiers et al. (1988, 1990, 1992). We have compared models assuming these two, experimentally evaluated flow laws and examined the predictions they make regarding diaper incubation periods, ascent velocities, deviatoric stresses and strain rates. (2) The evaluation of the effects of differential loading on the initiation an of salt structures. (3) Examination of the role of basement faults on the initiation and morphologic evolution of salt structures. (4) Evaluation of the mechanical properties of shale as a function of pressure and determination of the nature of its brittle-ductile transition. (5) Evaluation of the mechanical anisotropies of shales with varying concentrations, distributions and preferred orientations of clay. (6) The determination of temperature and ratedependencies of strength for a shale constitutive model that can be used in numerical models that depend on viscous formulations. (7) Determination of the mechanisms of deformation for argillaceous rocks over awide range of conditions. (8) Evaluation of the effects of H{sub 2}O within clay interlayers, as adsorbed surface layers.

Kronenberg, A.K.; Russell, J.E.; Carter, N.L.; Mazariegos, R.; Ibanez, W.

1993-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Geochemistry of Chemical Weapon Breakdown Products on the Seafloor: 1,4-Thioxane in Seawater  

Science Journals Connector (OSTI)

Geochemistry of Chemical Weapon Breakdown Products on the Seafloor: 1,4-Thioxane in Seawater ... The Chemical Weapons Convention mandates the active destruction of chemical weapon (CW) stockpiles held by nations on land, but does not address the far larger quantities of “abandoned” CW that await passive environmental decomposition following disposal on the sea floor. ... The comingling of disposed weapons material with anoxic hydrate bearing sediments is not theoretical. ...

Xin Zhang; Keith C. Hester; Oscar Mancillas; Edward T. Peltzer; Peter M. Walz; Peter G. Brewer

2009-01-02T23:59:59.000Z

142

Eagle Rock Geothermal Facility | Open Energy Information  

Open Energy Info (EERE)

Eagle Rock Geothermal Facility Eagle Rock Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Eagle Rock Geothermal Facility General Information Name Eagle Rock Geothermal Facility Facility Eagle Rock Sector Geothermal energy Location Information Location The Geysers, California Coordinates 38.826770222484°, -122.80002593994° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.826770222484,"lon":-122.80002593994,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

143

Definition: Rock Sampling | Open Energy Information  

Open Energy Info (EERE)

Sampling Sampling Jump to: navigation, search Dictionary.png Rock Sampling Systematic rock sampling can be used to characterize a geothermal reservoir. The physical and chemical properties of rock samples provide important information for determining whether a power generation or heat utilization facility can be developed. Some general rock properties can be measured by visual inspection, but detailed properties require laboratory techniques. View on Wikipedia Wikipedia Definition A core sample is a cylindrical section of (usually) a naturally occurring substance. Most core samples are obtained by drilling with special drills into the substance, for example sediment or rock, with a hollow steel tube called a core drill. The hole made for the core sample is called the "core hole". A variety of core samplers exist to sample

144

Paris Basin VSPs: case history establishing combinations of fine-layer (or lithologic) anisotropy and crack anisotropy from modelling shear wavefields near point singularities  

Science Journals Connector (OSTI)

......from point sources through anisotropic layers as used in ROCPAC software...at least, orthorhombic anisotropic symmetry. It is suggested...flattened grains, particularly in shales (Kaarsberg 1968), leading...other characteristic type of anisotropic symmetry in most rocks, including......

Iain Bush; Stuart Crampin

1991-12-01T23:59:59.000Z

145

Curriculum Vitae Professional http://geochemistry.usask.ca/bill/Curriculum%20Vitae%2010-24.htm[2/11/2009 7:14:51 PM  

E-Print Network [OSTI]

Curriculum Vitae Professional http://geochemistry.usask.ca/bill/Curriculum%20Vitae%2010-24.htm[2/11/2009 7:14:51 PM] CURRICULUM VITAE- last updated 12/14/07 Dr. WILLIAM P. PATTERSON Professor and Director, Missouri Highway and Trans. Dept., 1986-89. #12;Curriculum Vitae Professional http://geochemistry.usask.ca/bill/Curriculum

Patterson, William P.

146

Strontium isotope geochemistry of alluvial groundwater: a tracer for groundwater resources characterisation Hydrology and Earth System Sciences, 8(5), 959972 (2004) EGU  

E-Print Network [OSTI]

Strontium isotope geochemistry of alluvial groundwater: a tracer for groundwater resources characterisation 959 Hydrology and Earth System Sciences, 8(5), 959972 (2004) © EGU Strontium isotope geochemistry for corresponding author : p.negrel@brgm.fr Abstract This study presents strontium isotope and major ion data

Paris-Sud XI, Université de

147

Slick Rock Archived Soil & Groundwater Master Reports | Department...  

Office of Environmental Management (EM)

Soil & Groundwater Master Reports Slick Rock - Old North Continent Slick Rock - Union Carbide More Documents & Publications South Valley Archived Soil & Groundwater Master Reports...

148

Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Details Activities (5) Areas (2) Regions (0) Abstract: Two hot dry rock (HDR) geothermal energy reservoirs have been created by hydraulic fracturing of Precambrian granitic rock between two wells on the west flank of the Valles Caldera in the Jemez Mountains of northern New Mexico. Heat is extracted by injecting water into one well,

149

Rock of Ages | Open Energy Information  

Open Energy Info (EERE)

of Ages of Ages Jump to: navigation, search Name Rock of Ages Facility Rock of Ages Sector Wind energy Facility Type Small Scale Wind Facility Status In Service Owner Rock of Ages Energy Purchaser Rock of Ages Location Graniteville VT Coordinates 44.14668574°, -72.48180896° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.14668574,"lon":-72.48180896,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

150

Definition: Isotopic Analysis- Rock | Open Energy Information  

Open Energy Info (EERE)

Isotopic Analysis- Rock Isotopic Analysis- Rock Jump to: navigation, search Dictionary.png Isotopic Analysis- Rock Isotopes are atoms of the same element that have different numbers of neutrons. An isotopic analysis looks at a particular isotopic element(s) in a given system, while the conditions which increase/decrease the number of neutrons are well understood and measurable.[1] View on Wikipedia Wikipedia Definition References ↑ http://wwwrcamnl.wr.usgs.gov/isoig/isopubs/itchch2.html Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Isotopic_Analysis-_Rock&oldid=687702" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties

151

Thermophysical properties of the Po Basin rocks  

Science Journals Connector (OSTI)

......7 per cent. 4.2.2 Anisotropic rocks Anisotropy of shales, silty shales and siltstones...dolomites). Horizons of shales, silty shales and siltstones are present...the presence of thermally anisotropic sheet silicates, note that......

V. Pasquale; G. Gola; P. Chiozzi; M. Verdoya

2011-07-01T23:59:59.000Z

152

Winner: Hot Rocks | Department of Energy  

Energy Savers [EERE]

a catch. Only a couple of EGS projects have ever produced power, and those are in Germany and France, where the rock is considerably more pliant than Australia's granite...

153

Basin center - fractured source rock plays within tectonically segmented foreland (back-arc) basins: Targets for future exploration  

SciTech Connect (OSTI)

Production from fractured reservoirs has long been an industry target, but interest in this type play has increased recently because of new concepts and technology, especially horizontal drilling. Early petroleum exploration programs searched for fractured reservoirs from shale, tight sandstones, carbonates, or basement in anticlinal or fault traps, without particular attention to source rocks. Foreland basins are some of the best oil-generating basins in the world because of their rich source rocks. Examples are the Persian Gulf basin, the Alberta basin and Athabasca tar sands, and the eastern Venezuela basin and Orinoco tar sands. Examples of Cretaceous producers are the wrench-faulted La Paz-Mara anticlinal fields, Maracaibo basin, Venezuela; the active Austin Chalk play in an extensional area on the north flank of the Gulf of Mexico continental margin basin; and the Niobrara Chalk and Pierre Shale plays of the central Rocky Mountains, United States. These latter plays are characteristic of a foreland basin fragmented into intermontane basins by the Laramide orogeny. The Florence field, Colorado, discovered in 1862, and the Silo field, Wyoming, discovered in 1980, are used as models for current prospecting and will be described in detail. The technologies applied to fracture-source rock plays are refined surface and subsurface mapping from new log suites, including resistivity mapping; 3D-3C seismic, gravity, and aeromagnetic mapping; borehole path seismic mapping associated with horizontal drilling; fracture mapping with the Formation MicroScanner and other logging tools; measurements while drilling and other drilling and completion techniques; surface geochemistry to locate microseeps; and local and regional lineament discrimination.

Weimer, R.J. [Colorado School of Mines, Golden, CO (United States)

1994-09-01T23:59:59.000Z

154

Temporal trends of pollution Pb and other metals in east-central Baf n Island inferred from lake sediment geochemistry  

E-Print Network [OSTI]

pollution Lead stable isotopes Paleolimnology Arctic lakes Sediment geochemistry Atmospheric deposition long-term histories of atmospheric Pb pollution (Brännvall et al., 2001). In addition, stable isotopesTemporal trends of pollution Pb and other metals in east-central Baf n Island inferred from lake

Wolfe, Alexander P.

155

Temporal trends of pollution Pb and other metals in east-central Baffin Island inferred from lake sediment geochemistry  

E-Print Network [OSTI]

pollution Lead stable isotopes Paleolimnology Arctic lakes Sediment geochemistry Atmospheric deposition long-term histories of atmospheric Pb pollution (Brännvall et al., 2001). In addition, stable isotopesTemporal trends of pollution Pb and other metals in east-central Baffin Island inferred from lake

Briner, Jason P.

156

Rock-brine chemical interactions. Final report  

SciTech Connect (OSTI)

The results of experimental interaction of powdered volcanic rock with aqueous solutions are presented at temperatures from 200 to 400/sup 0/C, 500 to 1000 bars fluid pressure, with reaction durations of approximately 30 days under controlled laboratory conditions. The aim of this research is to develop data on the kinetics and equilibria of rock solution interactions that will provide insight into the complex geochemical processes attending geothermal reservoir development, stimulation, and reinjection. The research was done in the Stanford Hydrothermal Lab using gold cell equipment of the Dickson design. This equipment inverts the solution rock mixture several times a minute to ensure thorough mixing. Solution samples were periodically withdrawn without interruption of the experimental conditions. The data from these experiments suggests a path dependent series of reactions by which geothermal fluids might evolve from meteoric or magmatic sources.

Not Available

1982-02-01T23:59:59.000Z

157

Category:Little Rock, AR | Open Energy Information  

Open Energy Info (EERE)

AR AR Jump to: navigation, search Go Back to PV Economics By Location Media in category "Little Rock, AR" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Little Rock AR Entergy Arkansas Inc.png SVFullServiceRestauran... 71 KB SVHospital Little Rock AR Entergy Arkansas Inc.png SVHospital Little Rock... 69 KB SVLargeHotel Little Rock AR Entergy Arkansas Inc.png SVLargeHotel Little Ro... 70 KB SVLargeOffice Little Rock AR Entergy Arkansas Inc.png SVLargeOffice Little R... 71 KB SVMediumOffice Little Rock AR Entergy Arkansas Inc.png SVMediumOffice Little ... 68 KB SVMidriseApartment Little Rock AR Entergy Arkansas Inc.png SVMidriseApartment Lit... 70 KB SVOutPatient Little Rock AR Entergy Arkansas Inc.png SVOutPatient Little Ro...

158

The Scuddles volcanic-hosted massive sulfide deposit, Western Australia; geochemistry of the host rocks and evaluation of lithogeochemistry for exploration  

Science Journals Connector (OSTI)

...Ce Nd SmEuGd Dy Er Yb Ce Nd SmEuGd Dy Er Yb HANGING WALL MINERALIZED HORIZON FOOTWALL ]O.6. Stratigraphicvariatio o[c o Srite- ormalize8r ree rt elementabutSaucepatterns Scuddies. clearestmanifestationbeingthegeneraldepletionin Na, Ca,andSr(Table3...

David J. Whitford; P. M. Ashley

159

Rim Rock Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Rim Rock Wind Farm Rim Rock Wind Farm Jump to: navigation, search Name Rim Rock Wind Farm Facility Rim Rock Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NaturEner Developer NaturEner Energy Purchaser San Diego Gas & Electric Location Glacier and Toole Counties MT Coordinates 48.779564°, -112.061291° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":48.779564,"lon":-112.061291,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

160

Storage capacity in hot dry rock reservoirs  

DOE Patents [OSTI]

A method of extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other liquid is passed through the reservoir. The water is heated by the hot rock, recovered from the reservoir, cooled by extraction of heat by means of heat exchange apparatus on the surface, and then re-injected into the reservoir to be heated again. Water is added to the reservoir by means of an injection well and recovered from the reservoir by means of a production well. Water is continuously provided to the reservoir and continuously withdrawn from the reservoir at two different flow rates, a base rate and a peak rate. Increasing water flow from the base rate to the peak rate is accomplished by rapidly decreasing backpressure at the outlet of the production well in order to meet periodic needs for amounts of thermal energy greater than a baseload amount, such as to generate additional electric power to meet peak demands. The rate of flow of water provided to the hot dry rock reservoir is maintained at a value effective to prevent depletion of the liquid

Brown, Donald W. (Los Alamos, NM)

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Thermophysical properties of the Po Basin rocks  

Science Journals Connector (OSTI)

......W.E., AAPG, Memoir 1. Hadgu T. , Clinton C.L., Bean J.E., 2007. Determination of heat capacity of Yucca Mountain stratigraphic layer, Int. J. Rock Mech. Min. Sci., 44, 1022-1034. Hamilton E. , 1976. Variations of density......

V. Pasquale; G. Gola; P. Chiozzi; M. Verdoya

2011-07-01T23:59:59.000Z

162

Hot-dry-rock geothermal resource 1980  

SciTech Connect (OSTI)

The work performed on hot dry rock (HDR) geothermal resource evaluation, site characterization, and geophysical exploration techniques is summarized. The work was done by region (Far West, Pacific Northwest, Southwest, Rocky Mountain States, Midcontinent, and Eastern) and limited to the conterminous US.

Heiken, G.; Goff, F.; Cremer, G. (ed.)

1982-04-01T23:59:59.000Z

163

E-Print Network 3.0 - archean metavolcanic rocks Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(Krner, 1985). However, the tectonic setting and age of metavolcanic rocks in Egypt are poorly... metavolcanic rocks. Metavolcanic rocks in Egypt were described by...

164

Analysis of the growth of strike-slip faults using effective medium theory  

E-Print Network [OSTI]

anisotropic lithologies, the problem becomes more complex by the presence of inelastic rocks such as shale,

Aydin, A.

2010-01-01T23:59:59.000Z

165

The lithology, environment of deposition, and reservoir evaluation of sandstones in the Upper Queen Formation (Guadalupian, Permian) at Concho Bluff North and Jennifer Fields, Upton and Ector Counties, Texas  

E-Print Network [OSTI]

Mudstone. Anhydrite Halite. . . 15 ~ ~ 18 . . 18 . . 20 . . 26 . . 27 . . 27 . . 27 . . 32 . . 36 . . 38 . . 43 VERTICAL LITHOLOGY AND UNITS. . . 47 DEPOSITIONAL RECONSTRUCTION 55 CYCLICITY. . . 65 GRAIN ANALYSIS. Introduction. Grain... in the halite of the Queen Formation in the North Concho Bluff Field. . 45 LIST OF FIGURES Figure Page 15. Legend for lithostratigraphic columns of cored wells in the North Concho Bluff and Jennifer Fields . . 48 16. Lithostratigraphic column displaying...

Harper, James Broox

2012-06-07T23:59:59.000Z

166

Does roughening of rock-fluid-rock interfaces emerge from a stress-induced instability?  

Science Journals Connector (OSTI)

Non-planar solid-fluid-solid interfaces under stress are very common in many industrial and natural materials. For example, in the Earth’s crust, many rough and wavy interfaces can be observed in rocks in a wi...

E. Bonnetier; C. Misbah; F. Renard; R. Toussaint…

2009-01-01T23:59:59.000Z

167

Geochemistry Of Waters In The Valley Of Ten Thousand Smokes Region, Alaska  

Open Energy Info (EERE)

Waters In The Valley Of Ten Thousand Smokes Region, Alaska Waters In The Valley Of Ten Thousand Smokes Region, Alaska Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geochemistry Of Waters In The Valley Of Ten Thousand Smokes Region, Alaska Details Activities (3) Areas (1) Regions (0) Abstract: Meteoric waters from cold springs and streams outside of the 1912 eruptive deposits filling the Valley of Ten Thousand Smokes (VTTS) and in the upper parts of the two major rivers draining the 1912 deposits have similar chemical trends. Thermal springs issue in the mid-valley area along a 300-m lateral section of ash-flow tuff, and range in temperature from 21 to 29.8°C in early summer and from 15 to 17°C in mid-summer. Concentrations of major and minor chemical constituents in the thermal waters are nearly identical regardless of temperature. Waters in the

168

Geochemistry and origin of regional dolomites: Annual progress report, July 26, 1987-March 15, 1988  

SciTech Connect (OSTI)

This progress report covers accomplishments over the past year. Over the past year we have continued to maintain a group of excellent graduate students working on petrology of dolomites and closely allied topics. The research topics include: (1) U-Th-Pb systematics in Burlington-Keokuk carbonates;(2) solid inclusions and non-carbonate phases in dolomites of the Burlington-Keokuk FMS;(3) Porosity and permeability in dolomites of Burlington-Keokuk FMS;(4) X-ray microprobe analysis of trace elements using synchroton radiation;(5) Dolomitization of Devonian reef complexes Canning basin western Australia;(6) Quantitative modeling of major and trace elements and isotopes during carbonate diagenesis;(7) Modeling of regional fluid flow;and (8) Stable isotope geochemistry and cathode luminescence of crinoids from the Burlington-Keokuk FMS.

Hanson, G.N.; Meyers, W.J.

1988-03-01T23:59:59.000Z

169

Modeling of crack initiation, propagation and coalescence in rocks  

E-Print Network [OSTI]

Natural or artificial fracturing of rock plays a very important role in geologic processes and for engineered structures in and on rock. Fracturing is associated with crack initiation, propagation and coalescence, which ...

Gonçalves da Silva, Bruno Miguel

2009-01-01T23:59:59.000Z

170

Baseline geochemistry of soil and bedrock Tshirege Member of the Bandelier Tuff at MDA-P  

SciTech Connect (OSTI)

This report provides baseline geochemistry for soils (including fill), and for bedrock within three specific areas that are planned for use in the remediation of Material Disposal Area P (MDA-P) at Technical Area 16 (TA-16). The baseline chemistry includes leachable element concentrations for both soils and bedrock and total element concentrations for all soil samples and for two selected bedrock samples. MDA-P operated from the early 1950s to 1984 as a landfill for rubble and debris generated by the burning of high explosives (HE) at the TA-16 Burning Ground, HE-contaminated equipment and material, barium nitrate sand, building materials, and trash. The aim of this report is to establish causes for recognizable chemical differences between the background and baseline data sets. In many cases, the authors conclude that recognizable differences represent natural enrichments. In other cases, differences are best attributed to analytical problems. But most importantly, the comparison of background and baseline geochemistry demonstrates significant contamination for several elements not only at the two remedial sites near the TA-16 Burning Ground, but also within the entire region of the background study. This contamination is highly localized very near to the surface in soil and fill, and probably also in bedrock; consequently, upper tolerance limits (UTLs) calculated as upper 95% confidence limits of the 95th percentile are of little value and thus are not provided. This report instead provides basic statistical summaries and graphical comparisons for background and baseline samples to guide strategies for remediation of the three sites to be used in the restoration of MDA-P.

Warren, R.G.; McDonald, E.V.; Ryti, R.T.

1997-08-01T23:59:59.000Z

171

REDUCING RISK IN LOW-PERMEABILITY GAS FORMATIONS: UNDERSTANDING THE ROCK/FLUID CHARACTERISTICS OF ROCKY MOUNTAIN LARAMIDE BASINS  

SciTech Connect (OSTI)

An anomalous velocity model was constructed for the Wind River Basin (WRB) based on {approx}2000 mi of 2-D seismic data and 175 sonic logs, for a total of 132,000 velocity/depth profiles. Ten cross sections were constructed through the model coincident with known gas fields. In each cross section, an intense, anomalously slow velocity domain coincided with the gas-productive rock/fluid interval. The anomalous velocity model: (1) Easily isolates gas-charged rock/fluid systems characterized by anomalously slow velocities and water-rich rock/fluid systems characterized by normal velocities; and (2) Delineates the regional velocity inversion surface, which is characterized by steepening of the Ro/depth gradient, a significant increase in capillary displacement pressure, a significant change in formation water composition, and acceleration of the reaction rate of smectite-to-illite diagenesis in mixed-layer clays. Gas chimneys are observed as topographic highs on the regional velocity inversion surface. Beneath the surface are significant fluid-flow compartments, which have a gas-charge in the fluid phase and are isolated from meteoric water recharge. Water-rich domains may occur within regional gas-charged compartments, but are not being recharged from the meteoric water system (i.e., trapped water). The WRB is divided into at least two regionally prominent fluid-flow compartments separated by the velocity inversion surface: a water-dominated upper compartment likely under strong meteoric water drive and a gas-charged, anomalously pressured lower compartment. Judging from cross sections, numerous gas-charged subcompartments occur within the regional compartment. Their geometries and boundaries are controlled by faults and low-permeability rocks. Commercial gas production results when a reservoir interval characterized by enhanced porosity/permeability intersects one of these gas-charged subcompartments. The rock/fluid characteristics of the Rocky Mountain Laramide Basins (RMLB) described in this work determine the potential for significant, relatively unconventional, so-called ''basin-center'' hydrocarbon accumulations. If such accumulations occur, they will be characterized by the following critical attributes: (1) Location beneath a regional velocity inversion surface that typically is associated with low-permeability lithologies; (2) Anomalous pressure, both over- and underpressure, and when, less commonly, they appear to be normally pressured, they are not in contact with the meteoric water system; (3) A significant gas component in the regional multiphase fluid-flow system (water-gas-oil) that occurs beneath the regional velocity inversion surface; (4) Domains of intense gas charge (i.e., high gas saturation) within the regional multiphase fluid-flow system; (5) Compartmentalization of the rock/fluid system to a far greater extent beneath the regional velocity inversion surface than above it (i.e., convection of fluids across the regional velocity inversion surface is reduced or eliminated depending on the nature of the capillary properties of the low-permeability rocks associated with the inversion surface); (6) Commercial gas accumulations occurring at the intersection of reservoir intervals characterized by enhanced porosity and permeability and gas-charged domains; (7) Productive intersections of reservoir intervals and gas-charged domains, which are controlled by the structural, stratigraphic, and diagenetic elements affecting the rock/fluid system; and (8) No apparent meteoric water connection with the gas accumulations and gas columns up to several thousand feet in height. Because some of these critical attributes are not associated with conventional hydrocarbon accumulations, a new set of diagnostic tools are required in order to explore for and exploit these types of gas prospects efficiently and effectively. Some of these new diagnostic tools have been discussed in this report; other have been described elsewhere. In order to maximize risk reduction, it is recommended when exploring for these types of gas accu

Ronald C. Surdam

2003-12-29T23:59:59.000Z

172

VancouverParksville White RockNew Westminster  

E-Print Network [OSTI]

Courtenay VancouverParksville Abbotsford White RockNew Westminster Squamish Chilliwack Port McNeill Powell

173

Rock mechanics activities at the Waste Isolation Pilot Plant  

SciTech Connect (OSTI)

The application of rock mechanics at nuclear waste repositories is a true multidisciplinary effort. A description and historical summary of the Waste Isolation Pilot Plant (WIPP) is presented. Rock mechanics programs at the WIPP are outlined, and the current rock mechanics modeling philosophy of the Westinghouse Waste Isolation Division is discussed.

Francke, C. [Westinghouse Electric Corp., Carlsbad, NM (United States); Saeb, S. [International Technology Corp., Albuquerque, NM (United States)

1996-12-31T23:59:59.000Z

174

Understanding Through-Composition in Post-Rock, Math-Metal, and other Post-Millennial Rock Genres  

E-Print Network [OSTI]

Since the dawn of experimental rock’s second coming in the new millennium, experimental artists have begun distancing themselves from Top-40 artists through formal structures that eschew recapitulatory verse/chorus ...

Osborn, Brad

2011-01-01T23:59:59.000Z

175

Permeability of natural rock salt from the Waste Isolation Pilot Plant (WIPP) during damage evolution and healing  

SciTech Connect (OSTI)

The US Department of Energy has developed the Waste Isolation Pilot Plant (WIPP) in the bedded salt of southeastern New Mexico to demonstrate the safe disposal of radioactive transuranic wastes. Four vertical shafts provide access to the underground workings located at a depth of about 660 meters. These shafts connect the underground facility to the surface and potentially provide communication between lithologic units, so they will be sealed to limit both the release of hazardous waste from and fluid flow into the repository. The seal design must consider the potential for fluid flow through a disturbed rock zone (DRZ) that develops in the salt near the shafts. The DRZ, which forms initially during excavation and then evolves with time, is expected to have higher permeability than the native salt. The closure of the shaft openings (i.e., through salt creep) will compress the seals, thereby inducing a compressive back-stress on the DRZ. This back-stress is expected to arrest the evolution of the DRZ, and with time will promote healing of damage. This paper presents laboratory data from tertiary creep and hydrostatic compression tests designed to characterize damage evolution and healing in WIPP salt. Healing is quantified in terms of permanent reduction in permeability, and the data are used to estimate healing times based on considerations of first-order kinetics.

Pfeifle, T.W. [RE/SPEC Inc., Rapid City, SD (United States); Hurtado, L.D. [Sandia National Lab., Albuquerque, NM (United States)

1998-06-01T23:59:59.000Z

176

LRH: WETLANDS, Vol. 22, No. 3, 2002 RRH: Barbiro et al., GEOCHEMISTRY OF WATER AND GROUND WATER IN  

E-Print Network [OSTI]

LRH: WETLANDS, Vol. 22, No. 3, 2002 RRH: Barbiéro et al., GEOCHEMISTRY OF WATER AND GROUND WATER of the Nhecolândia, a sub-region of the Pantanal wetland in Brazil, is the presence of both saline and freshwater manuscript, published in "Wetlands 22, 3 (2002) 528-540" DOI : 10.1672/0277-5212(2002)022[0528:GOWAGW]2.0.CO

Paris-Sud XI, Université de

177

Rock River Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Wind Farm Wind Farm Jump to: navigation, search Name Rock River Wind Farm Facility Rock River Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Shell Wind Energy Developer SeaWest Energy Purchaser PacifiCorp Location Arlington and Carbon Counties WY Coordinates 41.6996°, -107.003° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.6996,"lon":-107.003,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

178

A Phased Array Approach to Rock Blasting  

SciTech Connect (OSTI)

A series of laboratory-scale simultaneous two-hole shots was performed in a rock simulant (mortar) to record the shock wave interference patterns produced in the material. The purpose of the project as a whole was to evaluate the usefulness of phased array techniques of blast design, using new high-precision delay technology. Despite high-speed photography, however, we were unable to detect the passage of the shock waves through the samples to determine how well they matched the expected interaction geometry. The follow-up mine-scale tests were therefore not conducted. Nevertheless, pattern analysis of the vectors that would be formed by positive interference of the shockwaves from multiple charges in an ideal continuous, homogeneous, isotropic medium indicate the potential for powerful control of blast design, given precise characterization of the target rock mass.

Leslie Gertsch; Jason Baird

2006-07-01T23:59:59.000Z

179

Urban Geochemistry:  

Science Journals Connector (OSTI)

...index.html With the rise in the use of diesel fuels, sulfate deposition was accompanied...in private gardens, and the mechanical wear of automobile parts (tires, brakes...polychlorinated biphenyls (PCBs) in the marine sediments of the Gulf of Naples estuary...

Stefano Albanese; Domenico Cicchella

180

Urban Geochemistry:  

Science Journals Connector (OSTI)

...per capita lead consumption in the United...coal-fired steam engine. The steam engine...burning of fossil fuels and the local...use of diesel fuels, sulfate deposition...tires, brakes, engine belts, mufflers...and fossil-fuel combustion...and material consumption, utilizing sensible...

Stefano Albanese; Domenico Cicchella

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Gage for measuring displacements in rock samples  

DOE Patents [OSTI]

A gage for measuring diametral displacement within a rock sample for use in a rock mechanics laboratory and in the field, comprises a support ring housing a linear variable differential transformer, a mounting screw, and a leaf spring. The mounting screw is adjustable and defines a first point of contact with the rock sample. The leaf spring has opposite ends fixed to the inner periphery of the mounting ring. An intermediate portion of the leaf spring projecting radially inward from the ring is formed with a dimple defining a second point of contact with the sample. The first and second points of contact are diametrically opposed to each other. The LVDT is mounted in the ring with its axis parallel to the line of measurement and its core rod received in the dimple of the leaf spring. Any change in the length of the line between the first and second support points is directly communicated to the LVDT. The leaf spring is rigid to completely support lateral forces so that the LVDT is free of all load for improved precision.

Holcomb, David J. (Albuquerque, NM); McNamee, Michael J. (Albuquerque, NM)

1986-01-01T23:59:59.000Z

182

Category:Rock Lab Analysis | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Rock Lab Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Rock Lab Analysis page? For detailed information on exploration techniques, click here. Category:Rock Lab Analysis Add.png Add a new Rock Lab Analysis Technique Pages in category "Rock Lab Analysis" The following 9 pages are in this category, out of 9 total. C Core Analysis Cuttings Analysis I Isotopic Analysis- Rock O Over Core Stress P Paleomagnetic Measurements Petrography Analysis R Rock Density X X-Ray Diffraction (XRD) X-Ray Fluorescence (XRF)

183

TWO-DIMENSIONAL MODELING OF LASER SPALLATION DRILLING OF ROCKS  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DIMENSIONAL MODELING OF LASER SPALLATION DRILLING OF ROCKS DIMENSIONAL MODELING OF LASER SPALLATION DRILLING OF ROCKS P532 Zhiyue Xu, Yuichiro Yamashita 1 , and Claude B. Reed Argonne National Laboratory, Argonne, IL 60439, USA 1 Now with Kyushu University, Japan Abstract High power lasers can weaken, spall, melt and vaporize natural earth materials with thermal spallation being the most energy efficient rock removal mechanism. Laser rock spallation is a very complex phenomenon that depends on many factors. Computer numerical modeling would provides great tool to understand the fundamental of this complex phenomenon, which is crucial to the success of its applications. Complexity of modeling laser rock spallation is due to: 1) rock is a porous media, to which traditional theories of heat transfer and rock mechanics can not be directly

184

ROCK PROPERTIES MODEL ANALYSIS MODEL REPORT  

SciTech Connect (OSTI)

The purpose of this Analysis and Model Report (AMR) is to document Rock Properties Model (RPM) 3.1 with regard to input data, model methods, assumptions, uncertainties and limitations of model results, and qualification status of the model. The report also documents the differences between the current and previous versions and validation of the model. The rock properties models are intended principally for use as input to numerical physical-process modeling, such as of ground-water flow and/or radionuclide transport. The constraints, caveats, and limitations associated with this model are discussed in the appropriate text sections that follow. This work was conducted in accordance with the following planning documents: WA-0344, ''3-D Rock Properties Modeling for FY 1998'' (SNL 1997, WA-0358), ''3-D Rock Properties Modeling for FY 1999'' (SNL 1999), and the technical development plan, Rock Properties Model Version 3.1, (CRWMS M&O 1999c). The Interim Change Notice (ICNs), ICN 02 and ICN 03, of this AMR were prepared as part of activities being conducted under the Technical Work Plan, TWP-NBS-GS-000003, ''Technical Work Plan for the Integrated Site Model, Process Model Report, Revision 01'' (CRWMS M&O 2000b). The purpose of ICN 03 is to record changes in data input status due to data qualification and verification activities. These work plans describe the scope, objectives, tasks, methodology, and implementing procedures for model construction. The constraints, caveats, and limitations associated with this model are discussed in the appropriate text sections that follow. The work scope for this activity consists of the following: (1) Conversion of the input data (laboratory measured porosity data, x-ray diffraction mineralogy, petrophysical calculations of bound water, and petrophysical calculations of porosity) for each borehole into stratigraphic coordinates; (2) Re-sampling and merging of data sets; (3) Development of geostatistical simulations of porosity; (4) Generation of derivative property models via linear coregionalization with porosity; (5) Post-processing of the simulated models to impart desired secondary geologic attributes and to create summary and uncertainty models; and (6) Conversion of the models into real-world coordinates. The conversion to real world coordinates is performed as part of the integration of the RPM into the Integrated Site Model (ISM) 3.1; this activity is not part of the current analysis. The ISM provides a consistent volumetric portrayal of the rock layers, rock properties, and mineralogy of the Yucca Mountain site and consists of three components: (1) Geologic Framework Model (GFM); (2) RPM, which is the subject of this AMR; and (3) Mineralogic Model. The interrelationship of the three components of the ISM and their interface with downstream uses are illustrated in Figure 1. Figure 2 shows the geographic boundaries of the RPM and other component models of the ISM.

Clinton Lum

2002-02-04T23:59:59.000Z

185

Geochemistry of Natural Components in the Near-Field Environment, Yucca Mountain, Nevada  

SciTech Connect (OSTI)

The natural near-field environment in and around the emplacement drifts of the proposed nuclear waste repository at Yucca Mountain, Nevada, includes the host rock, dust, seepage, and pore water. The chemical compositions of these components have been determined for assessing possible chemical and mineralogical reactions that may occur after nuclear waste is emplaced. The rock hosting the proposed repository is relatively uniform as shown by a mean coefficient of variation (CV) of 9 percent for major elements. In contrast, compositional variations of dust (bulk and water-soluble fractions), pore water, and seepage are large with mean CVs ranging from 28 to 64 percent. (authors)

Peterman, Zell E. [Yucca Mountain Project Branch, U.S. Geological Survey, MS 963 Box 25046 Denver Federal Center, 6th and Kipling Sts., Denver, CO, 80225 (United States); Oliver, Thomas A. [c/o U.S. Geological Survey, S.M. Stoller Corporation, MS 421 Box 25046 Denver Federal Center, Denver, CO, 80225 (United States)

2007-07-01T23:59:59.000Z

186

Size distribution functions for rock fragments  

Science Journals Connector (OSTI)

Abstract The capacity of 17 functions to represent the size distribution of fragmented rock is assessed on 1234 data sets of screened fragments from blasted and crushed rock of different origins, of sizes ranging from 0.002 to 2000 mm. The functions evaluated are Weibull, Grady, log-normal, log-logistic and Gilvarry, in their plain, re-scaled and bi-component forms, and also the Swebrec distribution and its bi-component extension. In terms of determination coefficient, the Weibull is the best two-parameter function for describing rock fragments, with a median R2 of 0.9886. Among re-scaled, three-parameter distributions, Swebrec and Weibull lead with median R2 values of 0.9976 and 0.9975, respectively. Weibull and Swebrec distributions tie again as best bi-component, with median R2 of 0.9993. Re-scaling generally reduces the unexplained variance by a factor of about four with respect to the plain function; bi-components further reduce this unexplained variance by a factor of about two to three. Size-prediction errors are calculated in four zones: coarse, central, fines and very fines. Expected and maximum errors in the different ranges are discussed. The extended Swebrec is the best fitting function across the whole passing range for most types of data. Bimodal Weibull and Grady distributions follow, except for the coarse range, where re-scaled forms are preferable. Considering the extra difficulty in fitting a five-parameter function with respect to a three-parameter one, re-scaled functions are the best choice if data do not extend far below 20% passing. If the focus is on the fine range, some re-scaled distributions may still do (Weibull, Swebrec and Grady, with maximum errors of 15–20% at 8% passing), but serious consideration should be given to bi-component distributions, especially extended Swebrec, bimodal Weibull and bimodal Grady.

José A. Sanchidrián; Finn Ouchterlony; Pablo Segarra; Peter Moser

2014-01-01T23:59:59.000Z

187

GPC behavior of metalloporphyrins from rock extract  

SciTech Connect (OSTI)

Nickel and vanadyl porphyrins present in rock extract from the vicinity of petroleum deposit in the Persian Gulf area were isolated by the combination of adsurption chromatography on silica gel and GPC on styrene-divinylbenzene copolymer. In order to study the GPC behavior of these metalloporphyrins, chromatographic fractions were collected and analyzed by UV/VIS absorption spectroscopy and mass spectrometry. The number of carbon atoms present in the porphine substituents and the different geometry of nickel and vanadyl ions in the molecule of metalloporphyrins were found to be the main factors influencing the GPC separation of these complexes. This chromatographic technique provided an effective separation of nickel from vanadylporphyrins.

Sebor, G.

1986-04-01T23:59:59.000Z

188

Organic geochemistry of Gadvan and Kazhdumi formations (Cretaceous) in South Pars field, Persian Gulf, Iran  

Science Journals Connector (OSTI)

In Southern Iran, Gadvan (Barremian-early Aptian) and Kazhdumi (Albian) formations are the most effective source rocks and have produced the majority of hydrocarbons reserved in the Zagros Basin especially in Dezful Embayment and Persian Gulf area. In this article, hydrocarbon potential of Gadvan and Kazhdumi formations is investigated in the South Pars field which is southern extension of the North field of Qatar Country. This field is located in Persian Gulf waters and is actually the northern extension of Qatar Arc Paleohigh where geological history of Gadvan and Kazhdumi formations is different from nearby area regarding depositional setting, burial history and source rock maturity. In this study, Gadvan and Kazhdumi formations as source rock candidates, which underlay Upper Dariyan and Mauddud members, respectively, were sampled in two drilled wells of the South Pars field for routine geochemical analysis to investigate hydrocarbon potential of these formations and source rock identification of trapped oil in the Upper Dariyan and Mauddud members. Several samples from top to the bottom of the formations were taken and analyzed by Rock-Eval pyrolysis. The average TOC content of Gadvan and Kazhdumi formations is 0.79 wt. % and 0.49 wt. %, respectively. Rock-Eval results (e.g. HI vs. Tmax) represent that TOC content of these formations contains type II-III kerogens which haven't suffered sufficient thermal maturity (Ro < 0.5%) in this study area. Moreover calculated S2/S3 ratio implies that these formations in central part of Qatar Arc, South Pars field couldn't produce noticeable liquid hydrocarbon. As it is believed, Gadvan and Kazhdumi formations to be source of trapped oil in the system, therefore, in the South Pars field reserved hydrocarbon in Upper Dariyan (Aptian) and Mauddud (late Albian) members which overlie Gadvan and Kazhdumi formations, respectively, are probably generated from Gadvan and Kazhdumi formations of the nearby through and flanks of the Qatar Arc where the burial depth and temperature increase then generated hydrocarbons in downdip area are migrated to the upper carbonate reservoirs in the crest part of the Qatar Arc. Long path migration of the hydrocarbon and source rock with lower organic matter are caused hydrocarbon accumulation in the South Pars Oil Layer (Al-Shaheen) which is approved by professional petrophysical and geological studies of the field.

Omeid Rahmani; Jafar Aali; Hassan Mohseni; Hossein Rahimpour-Bonab; Seddighe Zalaghaie

2010-01-01T23:59:59.000Z

189

Multi-phase water-rhyolite interaction and ore fluid generation at Aljustrel, Portugal  

Science Journals Connector (OSTI)

Detailed study of the Aljustrel volcanic rocks, through petrography, mineral chemistry, whole-rock geochemistry, and previously published stable isotope data, show that the rocks experienced extreme metasomat...

F. J. A. S. Barriga; W. S. Fyfe

1997-12-01T23:59:59.000Z

190

Ash limitation of physical coal beneficiation for medium–high ash coal—A geochemistry perspective  

Science Journals Connector (OSTI)

Abstract Nowadays the industrial coal beneficiation in China could only reduce the ash yield to about 10%, which could not meet the requirement or standard of environment protection. In this work, the possibility of reducing the ash yield was studied from the aspect of geochemistry. The channel samples were collected from two coal seams in Guizhou and Shanxi province, China and then conducted analysis by combining data from coals worldwide. The result reveals that the same coal seam or the coals deposited in the same peat swamp show a significantly positive correlation between ash yield and Al2O3 + SiO2 content, and the intercept of regression equation on the ash axis is always less than 5% (generally 2–5%). Overall, the coal from China is featured with a higher intercept compared with that in the other countries. The intercept of 2–5% on the ash axis indicates an original inorganic component in coal-forming peat. The research result also presents a theoretical limitation of coal ash by coal cleaning, because 2–5% of inorganic components in medium–high quality ash coal could hardly be separated by traditional physical coal beneficiation.

Wenfeng Wang; Weiduo Hao; Simon Xu; Fuchang Qian; Shuxun Sang; Yong Qin

2014-01-01T23:59:59.000Z

191

Study of Acid Response of Qatar Carbonate Rocks  

E-Print Network [OSTI]

STUDY OF ACID RESPONSE OF QATAR CARBONATE ROCKS A Thesis by ZHAOHONG WANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... December 2011 Major Subject: Petroleum Engineering Study of Acid Response of Qatar Carbonate Rocks Copyright 2011 Zhaohong Wang STUDY OF ACID RESPONSE OF QATAR CARBONATE ROCKS A Thesis...

Wang, Zhaohong

2012-02-14T23:59:59.000Z

192

United States National Waste Terminal Storage argillaceous rock studies  

SciTech Connect (OSTI)

The past and present argillaceous rock studies for the US National Waste Terminal Storage Program consist of: (1) evaluation of the geological characteristics of several widespread argillaceous formations in the United States; (2) laboratory studies of the physical and chemical properties of selected argillaceous rock samples; and (3) two full-scale in situ surface heater experiments that simulate the emplacement of heat-generating radioactive waste in argillaceous rock.

Brunton, G.D.

1981-01-01T23:59:59.000Z

193

Rock mechanics contributions from defense programs  

SciTech Connect (OSTI)

An attempt is made at illustrating the many contributions to rock mechanics from US defense programs, over the past 30-plus years. Large advances have been achieved in the technology-base area covering instrumentation, material properties, physical modeling, constitutive relations and numerical simulations. In the applications field, much progress has been made in understanding and being able to predict rock mass behavior related to underground explosions, cratering, projectile penetration, and defense nuclear waste storage. All these activities stand on their own merit as benefits to national security. But their impact is even broader, because they have found widespread applications in the non-defense sector; to name a few: the prediction of the response of underground structures to major earthquakes, the physics of the earth`s interior at great depths, instrumentation for monitoring mine blasting, thermo-mechanical instrumentation useful for civilian nuclear waste repositories, dynamic properties of earthquake faults, and transient large-strain numerical modeling of geological processes, such as diapirism. There is not pretense that this summary is exhaustive. It is meant to highlight success stories representative of DOE and DOD geotechnical activities, and to point to remaining challenges.

Heuze, F.E.

1992-02-01T23:59:59.000Z

194

Rock types, pore types, and hydrocarbon exploration  

SciTech Connect (OSTI)

A proposed exploration-oriented method of classifying porosity in sedimentary rocks is based on microscopic examination cores or cuttings. Factors include geometry, size, abundance, and connectivity of the pores. The porosity classification is predictive of key petrophysical characteristics: porosity-permeability relationships, capillary pressures, and (less certainly) relative permeabilities. For instance, intercrystalline macroporosity typically is associated with high permeability for a given porosity, low capillarity, and favorable relative permeabilities. This is found to be true whether this porosity type occurs in a sucrosic dolomite or in a sandstone with pervasive quartz overgrowths. This predictive method was applied in three Rocky Mountain oil plays. Subtle pore throat traps could be recognized in the J sandstone (Cretaceous) in the Denver basin of Colorado by means of porosity permeability plotting. Variations in hydrocarbon productivity from a Teapot Formation (Cretaceous) field in the Powder River basin of Wyoming were related to porosity types and microfacies; the relationships were applied to exploration. Rock and porosity typing in the Red River Formation (Ordovician) reconciled apparent inconsistencies between drill-stem test, log, and mud-log data from a Williston basin wildcat. The well was reevaluated and completed successfully, resulting in a new field discovery. In each of these three examples, petrophysics was fundamental for proper evaluation of wildcat wells and exploration plays.

Coalson, E.B.; Hartmann, D.J.; Thomas, J.B.

1985-05-01T23:59:59.000Z

195

Seepage into drifts in unsaturated fractured rock at Yucca Mountain  

E-Print Network [OSTI]

Fractured Rock at Yucca Mountain Jens Birkholzer, Guomin Lrepository site at Yucca Mountain, Nevada, as it is locatedclimate conditions at Yucca Mountain. The numerical study is

Birkholzer, Jens; Li, Guomin; Tsang, Chin-Fu; Tsang, Yvonne

1998-01-01T23:59:59.000Z

196

Active control of underground stresses through rock pressurization  

SciTech Connect (OSTI)

To significantly increase the stability of underground excavations while exploiting the full advantages of confined rock strength, methods must be developed to actively control the distribution of stresses near the excavation. This US Bureau of Mines study examines theoretical and practical aspects of rock pressurization, an active stress control concept that induces compressive stress in the wall rock through repeated hydraulic fracturing with a settable fluid. Numerical analyses performed by incorporating the rock pressurization concept into a variety of boundary-element models indicate that rock pressurization has the potential to improve underground excavation stability in three ways: (1) by relocating stress concentrations away from the weak opening surface to stronger, confined wall rock; (2) by inducing additional stresses in a biaxial stress field to reduce the difference between the principal stress components near the surface of the opening, and (3) by counteracting the tensile stresses induced in the rock around internally loaded openings. Practical aspects of the rock pressurization concept were investigated through a series of hydraulic fracturing experiments. The use of sulfur as a settable fluid for hydraulic fracturing was demonstrated, although problems related to sulfur viscosity suggest that other molten materials, such as wax, may be better suited to practical field application of the rock pressurization concept.

Vandergrift, T.L.

1995-06-01T23:59:59.000Z

197

Carbonation Mechanism of Reservoir Rock by Supercritical Carbon...  

Broader source: Energy.gov (indexed) [DOE]

the carbonation reaction mechanisms between supercritical carbon dioxide (scCO2) and reservoir rocks consisting of different mineralogical compositions in aqueous and...

198

Scientists Pass Solid Particles Through Rock in DOE-Sponsored...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

rock fractures in the laboratory. This technology has the potential for mapping fracture systems in detail and aid in determining reservoir characteristics. This research was...

199

Reconstruction of Sedimentary Rock Based on Mechanical Properties  

E-Print Network [OSTI]

Diagenesis transforms an unconsolidated loose sed- imentOur emphasis is on unconsolidated sand and sandstone. Thesedi- mentary rock: unconsolidated sand and sandstone. The

Jin, Guodong; Patzek, Tad W.; Silin, Dmitry B.

2008-01-01T23:59:59.000Z

200

Rock Sampling At San Francisco Volcanic Field Area (Warpinski...  

Open Energy Info (EERE)

geologically mapped the target area, obtained rock samples for age dating and mineral chemistry, performed gravity and magnetic surveys, and integrated these results to identify...

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Evaluation Of Used Fuel Disposition In Clay-Bearing Rock  

Broader source: Energy.gov [DOE]

Radioactive waste disposal in shale/argillite rock formations has been widely considered given its desirable isolation properties, e.g., low permeability, potential geochemically reduced conditions...

202

Rock Rapids Municipal Utility | Open Energy Information  

Open Energy Info (EERE)

Rapids Municipal Utility Rapids Municipal Utility Jump to: navigation, search Name Rock Rapids Municipal Utility Place Iowa Utility Id 16206 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial Power (Single-Phase) Commercial Commercial Power (Three-Phase) Commercial Residential Power Residential Average Rates Residential: $0.0807/kWh Commercial: $0.0633/kWh Industrial: $0.0899/kWh

203

international journal of rock mechanics and mining sciences  

E-Print Network [OSTI]

Original Research, New Developments and Case Studies in Rock Mechanics and Rock .... Prior to submitting your paper, please follow the instructions given below. ... Permission of the Publisher is required for resale or distribution ..... The Digital Object Identifier (DOI) may be used to cite and link to electronic documents.

204

Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide  

Broader source: Energy.gov [DOE]

Project Objectives: Elucidate comprehensively the carbonation reaction mechanisms between supercritical carbon dioxide (scCO2) and reservoir rocks consisting of different mineralogical compositions in aqueous and non-aqueous environments at temperatures of up to 250ºC, and to develop chemical modeling of CO2-reservior rock interactions.

205

SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES  

SciTech Connect (OSTI)

As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Effects of pore texture on porosity, permeability, and sonic velocity. We show how a relation can be found between porosity, permeability, and velocity by separating the formations of rocks with similar pore textures.

Gary Mavko

2003-06-30T23:59:59.000Z

206

GEOS898 History on the Rocks Assignment 2  

E-Print Network [OSTI]

can be broken down into four major rock groups (i.e. Clastic, biogenic, organic, chemical Flow chart for identifying sedimentary rocks (most text books have this or can be found on line) Acid, distribution of layers and chemistry. It is worthwhile for the teacher to spend about 10 minutes reviewing

Frank, Tracy D.

207

Determining inert content in coal dust/rock dust mixture  

DOE Patents [OSTI]

A method and apparatus for determining the inert content of a coal dust and rock dust mixture uses a transparent window pressed against the mixture. An infrared light beam is directed through the window such that a portion of the infrared light beam is reflected from the mixture. The concentration of the reflected light is detected and a signal indicative of the reflected light is generated. A normalized value for the generated signal is determined according to the relationship .phi.=(log i.sub.c `log i.sub.co) / (log i.sub.c100 -log i.sub.co) where i.sub.co =measured signal at 0% rock dust i.sub.c100 =measured signal at 100% rock dust i.sub.c =measured signal of the mixture. This normalized value is then correlated to a predetermined relationship of .phi. to rock dust percentage to determine the rock dust content of the mixture. The rock dust content is displayed where the percentage is between 30 and 100%, and an indication of out-of-range is displayed where the rock dust percent is less than 30%. Preferably, the rock dust percentage (RD%) is calculated from the predetermined relationship RD%=100+30 log .phi.. where the dust mixture initially includes moisture, the dust mixture is dried before measuring by use of 8 to 12 mesh molecular-sieves which are shaken with the dust mixture and subsequently screened from the dust mixture.

Sapko, Michael J. (Finleyville, PA); Ward, Jr., Jack A. (Oakmont, PA)

1989-01-01T23:59:59.000Z

208

Fluid Migration During Ice/Rock Planetesimal Differentiation  

E-Print Network [OSTI]

/water reaction, which will depend on the rate at which water can be segregated from a melting ice/rock core. For the liquid water phase to migrate toward the surface, the denser rock phase must compact. The primary question that this thesis will answer is how...

Raney, Robert 1987-

2012-12-12T23:59:59.000Z

209

Petroleum geochemistry of Texas and Oklahoma oils from the Marathon/Ouachita fold belt  

SciTech Connect (OSTI)

The Marathon uplift of west Texas and the Ouachita Mountains of Oklahoma and Arkansas comprise the surface expressions of a Paleozoic orogenic belt extending across the south-central United States. A century of petroleum exploration in the Marathon and Ouachita exposures has yielded several oil discoveries. In this study, detailed molecular, elemental, and isotopic data are presented for nine Texas oils, five Oklahoma oils, and four Oklahoma solid bitumens, all associated with thrust belt rocks of the Marathons and Ouachitas. Oil-oil and oil-solid bitumen correlations are proposed, and the character of the organic matter in the source rock(s) is deduced from the chemistry of the oils and solid bitumens. All 18 samples are sourced from the same (or very similar) organic matter. This indicates that they are probably cogenetic, despite geographic separations of hundreds of miles. Chemical differences in these samples derive from secondary effects, including biodegradation (e.g., solid bitumens) and differing levels of thermal maturity. The occurrence of unusual chemical compounds (certain bisnor- and trisnor-hopanes) in all samples probably indicates the presence of anaerobic bacteria in the depositional environment. Source deductions from oil chemistry suggest that an Ordovician unit is responsible for these oils and solid bitumens. This conclusion is consistent with previous literature suggesting an Upper Ordovician source for Oklahoma Ouachita oils and supports tectonic reconstructions of the region during Ordovician time.

Curiale, J.A. (Unocal, Inc., Brea, CA (United States))

1991-03-01T23:59:59.000Z

210

Petrography and geochemistry of the Artesia Group, Palo Duro Basin, Texas Panhandle: Final report  

SciTech Connect (OSTI)

The Artesia Group of the Texas Panhandle is an evaporite red-bed sequence which has been intensely altered by interaction of evaporites with ground water. Comparison of the upper, most altered part of the sequence with the lower, least altered part allows identification of the diagenetic sequence. The least altered lower part of the Artesia Group includes anhydrite beds, anhydritic halite, mudstone-halite mixtures, mudstone, claystone, siltstone, and sandstone. Diagenetic processes include cementation by halite, replacement of gypsum by anhydrite and minor polyhalite, and minor replacement of halite by dolomite and anhydrite. Halite is present throughout the lower part of the Artesia Group as bedded halite, as isolated halite crystals and veins, and as halite cement in clastic beds. The altered interval in the upper part of the Artesia Group is characterized by mudstone-anhydrite-dolomite breccias, thin, wavy laminae of anhydrite and dolomite, and abundant fractures filled with fibrous anhydrite and gypsum in mudstone, claystone, siltstone, and thin anhydrite beds. Halite is absent, and removal of halite is interpreted as the principal cause of the alteration, either directly, by dissolution and collapse, or indirectly, by increasing porosity and allowing increased ground-water penetration. At the top of the Artesia Group, anhydrite has been hydrated to gypsum, and minor amounts of gypsum have been replaced by calcite. The geochemistry of preserved halite in the lower part of the Artesia Group shows that meteoric waters have been included in halite and that halite has been recycled by dissolution and reprecipitation. The occurrence of this type of alteration might indicate that the halite of the Artesia Group was invaded by waters from the overlying aquifers. However, the stratigraphic and textural relationships in the halite indicate that the alteration reflects continental influences in the clastic-dominated depositional environment. 32 refs., 45 figs., 1 tab.

Havorka, S.D.; Fisher, R.S.; Nance, H.S.

1988-01-01T23:59:59.000Z

211

Engineering assessment of inactive uranium mill tailings: Slick Rock sites, Slick Rock, Colorado  

SciTech Connect (OSTI)

Ford, Bacon and Davis Utah, Inc., has reevaluated the Slick Rock sites in order to revise the October 1977 engineering radioactive uranium mill tailings at Slick Rock, Colorado. This engineering assessment has included the preparation of topographic maps, the performance of core drillings and radiometric measurements sufficient to determine areas and volumes of tailings and radiation exposures of individuals and nearby populations, the investigations of site hydrology and meteorology, and the evaluation and costing of alternative corrective actions. Radon gas released from the 387,000 tons of tailings at the Slick Rock sites constitutes the most significant environmental impact, although windblown tailings and external gamma radiation also are factors. The five alternative actions presented in this engineering assessment include millsite decontamination with the addition of 3 m of stabilization cover material, consolidation of the piles, and removal of the tailings to remote disposal sites and decontamination of the tailings sites. Cost estimates for the five options range from about $6,800,000 for stabilization in-place, to about $11,000,000 for disposal at a distance of about 6.5 mi. Three principal alternatives for the reprocessing of the Slick Rock tailings were examined: heap leaching; treatment at an existing mill; and reprocessing at a new conventional mill constructed for tailings reprocessing. The cost of the uranium recovered would be over $800/lb of U/sub 3/O/sub 8/ whether by conventional or heap leach plant processes. The spot market price for uranium was $25/lb early in 1981. Therefore, reprocessing the tailings for uranium recovery is not economically attractive at present, nor for the foreseeable future.

none,

1981-09-01T23:59:59.000Z

212

Drilling Large Diameter Holes in Rocks Using Multiple Laser Beams  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Drilling Large Diameter Holes in Rocks Using Multiple Laser Beams (504) Drilling Large Diameter Holes in Rocks Using Multiple Laser Beams (504) Richard Parker,. Parker Geoscience Consulting, LLC, Arvada, Colorado, USA; Zhiyue Xu and Claude Reed, Argonne National Laboratory, Argonne, Illinois, USA; Ramona Graves, Department of Petroleum Engineering, Colorado School of Mines, Golden, Colorado, USA; Brian Gahan and Samih Batarseh, Gas Technology Institute, Des Plaines, Illinois, USA ABSTRACT Studies on drilling petroleum reservoir rocks with lasers show that modern infrared lasers have the capability to spall (thermally fragment), melt and vaporize natural earth materials with the thermal spallation being the most efficient rock removal mechanism. Although laser irradiance as low as 1000 W/cm 2 is sufficient to spall rock, firing the

213

Property:HostRockAge | Open Energy Information  

Open Energy Info (EERE)

HostRockAge HostRockAge Jump to: navigation, search Property Name HostRockAge Property Type String Description Describes the age of the reservoir rock by epoch, era, or period per available data. This is a property of type Page. Subproperties This property has the following 10 subproperties: B Beowawe Hot Springs Geothermal Area Brady Hot Springs Geothermal Area C Chena Geothermal Area D Desert Peak Geothermal Area G Geysers Geothermal Area R Raft River Geothermal Area Roosevelt Hot Springs Geothermal Area S Salton Sea Geothermal Area Steamboat Springs Geothermal Area W Wabuska Hot Springs Geothermal Area Pages using the property "HostRockAge" Showing 11 pages using this property. A Amedee Geothermal Area + Mesozoic + B Blue Mountain Geothermal Area + Triassic + C Coso Geothermal Area + Mesozoic +

214

Electrical Conductivity of Soils and Rocks | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Electrical Conductivity of Soils and Rocks Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Electrical Conductivity of Soils and Rocks Author J.D. McNeill Organization Geonics Limited Published Geonics Limited, 1980 Report Number TN-5 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Electrical Conductivity of Soils and Rocks Citation J.D. McNeill (Geonics Limited). 1980. Electrical Conductivity of Soils and Rocks. TN-5 Edition. ?: Geonics Limited. Report No.: TN-5. Retrieved from "http://en.openei.org/w/index.php?title=Electrical_Conductivity_of_Soils_and_Rocks&oldid=695344"

215

Rock Density At Alum Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Rock Density At Alum Area (DOE GTP) Rock Density At Alum Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Density At Alum Geothermal Area (DOE GTP) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Rock Density Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Rock_Density_At_Alum_Area_(DOE_GTP)&oldid=402985" Categories: Exploration Activities DOE Funded Activities ARRA Funded Activities What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers Energy blogs Linked Data Developer services OpenEI partners with a broad range of international organizations to grow

216

Rock Hill Utilities - Water Heater and Heat Pump Rebate Program |  

Broader source: Energy.gov (indexed) [DOE]

Rock Hill Utilities - Water Heater and Heat Pump Rebate Program Rock Hill Utilities - Water Heater and Heat Pump Rebate Program Rock Hill Utilities - Water Heater and Heat Pump Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Program Info State South Carolina Program Type Utility Rebate Program Rebate Amount Water Heater: up to $275 Heat Pump Replacement: $400 Provider Rock Hill Utilities Through the SmartChoice program, Rock Hill Utilities offers rebates for water heater and heat pump replacements. Information on financing for heat pumps can also be found on the web site listed above. If both the water heater and heat pump are purchased then the customer may qualify for the Great Rate program. The Great Rate program will add a 25% discount to a

217

Longwave thermal infrared spectral variability in individual rocks  

SciTech Connect (OSTI)

A hyperspectral imaging spectrometer measuring in the longwave thermal infrared (7.6-11.6 {micro}m) with a spatial resolution less than 4 mm was used in the field to observe the variability of emissivity spectra within individual rocks. The rocks were obtained commercially, were on the order of 20 cm in size and were selected to have distinct spectral features: they include alabaster (gypsum), soapstone (steatite with talc), obsidian (volcanic glass), norite (plagioclase and orthopyroxene), and 'jasper' (silica with iron oxides). The advantages of using an imaging spectrometer to spectrally characterize these rocks are apparent. Large spectral variations were observed within individual rocks that may be attributed to roughness, surface geometry, and compositional variation. Non-imaging spectrometers would normally miss these variations as would small samples used in laboratory measurements, spatially averaged spectra can miss the optimum spectra for identification materials and spatially localized components of the rock can be obscured.

Balick, Lee K [Los Alamos National Laboratory; Gillespie, Alan [UN. WASHINGTON; French, Andrew [USDA-ARS; Danilina, Iryna [UN. WASHINGTON

2008-01-01T23:59:59.000Z

218

Isotopic Analysis- Rock At Coso Geothermal Area (1984) | Open Energy  

Open Energy Info (EERE)

Analysis- Rock At Coso Geothermal Area (1984) Analysis- Rock At Coso Geothermal Area (1984) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Coso Geothermal Area (1984) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Rock Activity Date 1984 Usefulness not indicated DOE-funding Unknown Exploration Basis To analyze evidence for crustal interaction and compositional zonation in the source regions of Pleistocene basaltic and rhyolitic magmas of the Coso volcanic field Notes The isotopic compositions of Pb and Sr in Pleistocene basalt, high-silica rhyolite, and andesitic inclusions in rhyolite of the Coso volcanic field indicate that these rocks were derived from different levels of compositionally zoned magmatic systems. The two earliest rhyolites probably

219

Constitutive relationships for elastic deformation of clay rock: Data Analysis  

SciTech Connect (OSTI)

Geological repositories have been considered a feasible option worldwide for storing high-level nuclear waste. Clay rock is one of the rock types under consideration for such purposes, because of its favorable features to prevent radionuclide transport from the repository. Coupled hydromechanical processes have an important impact on the performance of a clay repository, and establishing constitutive relationships for modeling such processes are essential. In this study, we propose several constitutive relationships for elastic deformation in indurated clay rocks based on three recently developed concepts. First, when applying Hooke's law in clay rocks, true strain (rock volume change divided by the current rock volume), rather than engineering strain (rock volume change divided by unstressed rock volume), should be used, except when the degree of deformation is very small. In the latter case, the two strains will be practically identical. Second, because of its inherent heterogeneity, clay rock can be divided into two parts, a hard part and a soft part, with the hard part subject to a relatively small degree of deformation compared with the soft part. Third, for swelling rock like clay, effective stress needs to be generalized to include an additional term resulting from the swelling process. To evaluate our theoretical development, we analyze uniaxial test data for core samples of Opalinus clay and laboratory measurements of single fractures within macro-cracked Callovo-Oxfordian argillite samples subject to both confinement and water reduced swelling. The results from this evaluation indicate that our constitutive relationships can adequately represent the data and explain the related observations.

Liu, H.H.; Rutqvist, J.; Birkholzer, J.T.

2011-04-15T23:59:59.000Z

220

Trace Element Geochemistry of Magnetite and Its Relationship to Cu-Bi-Co-Au-Ag-U-W Mineralization in the Great Bear Magmatic Zone, NWT, Canada  

Science Journals Connector (OSTI)

...14 p., doi: 10.1029/1999GC000026 . Li Y.H. , 2000, A compendium of geochemistry: From solar nebula to the human brain: Princeton, Princeton University Press, 475 p. Liu W. , Borg S.J., Testemale D., Etschmann B., Hazemann J.L...

P. Acosta-Góngora; S. A. Gleeson; I. M. Samson; L. Ootes; L. Corriveau

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

E-Print Network 3.0 - aspo hard rock Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

60 Merguerian, Charles; and Ozdemir, Levent, 2003, Rock Mass Properties and Hard Rock TBM Penetration Rate Investigations, Queens Tunnel Complex, NYC Water Tunnel 3, Stage 2: p....

222

A STATISTICAL FRACTURE MECHANICS APPROACH TO THE STRENGTH OF BRITTLE ROCK  

E-Print Network [OSTI]

to evaluate subcritical crack growth, many of the rubberoccurred indicating negligible subcritical crack growth.Subcritical crack growth can occur in many rocks and rock-

Ratigan, J.L.

2010-01-01T23:59:59.000Z

223

Excavation Damaged Zones In Rock Salt Formations  

SciTech Connect (OSTI)

Salt formations have long been proposed as potential host rocks for nuclear waste disposal. After the operational phase of a repository the openings, e.g., boreholes, galleries, and chambers, have to be sealed in order to avoid the release of radionuclides into the biosphere. For optimising the sealing techniques knowledge about the excavation damaged zones (EDZ) around these openings is essential. In the frame of a project performed between 2004 and 2007, investigations of the EDZ evolution were performed in the Stassfurt halite of the Asse salt mine in northern Germany. Three test locations were prepared in the floor of an almost 20 year old gallery on the 800-m level of the Asse mine: (1) the drift floor as existing, (2) the new drift floor shortly after removing of a layer of about 1 m thickness of the floor with a continuous miner, (3) the new drift floor 2 years after cutting off the 1-m layer. Subject of investigation were the diffusive and advective gas transport and the advective brine transport very close to the opening. Spreading of the brine was tracked by geo-electric monitoring in order to gain information about permeability anisotropy. Results obtained showed that EDZ cut-off is a useful method to improve sealing effectiveness when constructing technical barriers. (authors)

Jockwer, N.; Wieczorek, K. [Gesellschaft fur Anlagen- und Reaktorsicherheit (GRS) mbH, Braunschweig (Germany)

2008-07-01T23:59:59.000Z

226

DOE - Office of Legacy Management -- Rock Island Arsenal - IL 09  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Rock Island Arsenal - IL 09 Rock Island Arsenal - IL 09 FUSRAP Considered Sites Site: ROCK ISLAND ARSENAL ( IL.09 ) Eliminated from consideration under FUSRAP - Referred to DOD Designated Name: Not Designated Alternate Name: None Location: Rock Island , Illinois IL.09-1 Evaluation Year: 1987 IL.09-2 Site Operations: Site located on a DOD facility and operated under AEC control. Exact nature or time period of operations not clear. No indication that radioactive materials were involved. Contract work with Albuquerque Operations office performed. IL.09-1 IL.09-2 Site Disposition: Eliminated - No Authority - Referred to DOD IL.09-2 Radioactive Materials Handled: None Indicated IL.09-2 Primary Radioactive Materials Handled: None Indicated Radiological Survey(s): None Indicated

227

DOE - Office of Legacy Management -- WNI Split Rock Site - 043  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Split Rock Site - 043 Split Rock Site - 043 FUSRAP Considered Sites Site: WNI Split Rock Site (043) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: The Western Nuclear, Inc. (WNI) Split Rock site is a Uranium Mill Tailings Remedial Action (UMTRA) Title II site located in Jeffrey City, Wyoming. UMTRA Title II sites are privately owned and operated sites that were active when the Uranium Mill Tailings Control Act was passed in 1978. The majority of the milling conducted at these sites was for private sale, but a portion was sold to the U.S. Government. After the owner completes U.S. Nuclear Regulatory Commission license termination, the Department of

228

Photo of the Week: Laser Beats Rock | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Laser Beats Rock Laser Beats Rock Photo of the Week: Laser Beats Rock April 8, 2013 - 5:28pm Addthis On August 5, 2012, the Curiosity rover touched down on the surface of Mars. The ChemCam instrument package, developed at Los Alamos National Laboratory, is a device mounted on the Mars Curiosity rover that uses two remote sensing instruments: the Laser-Induced Breakdown Spectrometer (LIBS) and a Remote Micro-Imager (RMI). The LIBS fires a powerful laser that determines chemical compositions of rock and soil samples, while the RMI takes photos of the samples within the rover's vicinity. In this photo, the ChemCam is being prepared in the clean room prior to the launch of NASA's Mars Science Laboratory mission. Learn more about the ChemCam. | Photo courtesy of Los Alamos National Laboratory.

229

Isotopic Analysis- Rock At Coso Geothermal Area (1997) | Open Energy  

Open Energy Info (EERE)

Rock At Coso Geothermal Area (1997) Rock At Coso Geothermal Area (1997) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Coso Geothermal Area (1997) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Isotopic Analysis- Rock Activity Date 1997 Usefulness useful DOE-funding Unknown Exploration Basis Determine a major lithospheric boundary Notes Sr and Nd isotope ratios of Miocene-Recent basalts in eastern California, when screened for crustal contamination, vary dramatically and indicate the presence of a major lithospheric boundary that is not obvious from surface geology. Isotope ratios from the Coso field form a bull's-eye pattern with very low 87Sr/86Sr (0.7033) centered just south of the geothermal area. The

230

Rock Sampling At Florida Mountains Area (Brookins, 1982) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Rock Sampling At Florida Mountains Area (Brookins, 1982) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Florida Mountains Area (Brookins, 1982) Exploration Activity Details Location Florida Mountains Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Radiogenic heat production analysis from U,Th,K concentrations. References D. G. Brookins (1982) Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat Flow In The Precambrian And Younger Silicic Rocks Of The Zuni And Florida Mountains, New Mexico (Usa)

231

On the energy range relation for fast muons in rock  

Science Journals Connector (OSTI)

A discussion is given of the best estimate of various types of energy loss; the energy-range relation for muons in rock and water is then evaluated....?6 g?1 cm2 fractional «nuclear» energy losses respectively; w...

M. Mandò; L. Ronchi

1952-01-01T23:59:59.000Z

232

Upscaling of elastic properties of anisotropic sedimentary rocks  

Science Journals Connector (OSTI)

......Data 2.1 Physical model of shale Shales are anisotropic rocks whose anisotropy is generally...Hudson J.A., 1994. Anisotropic effective-medium modeling of the elastic properties of shales, Geophysics, 59, 1570-1583......

Irina O. Bayuk; Mike Ammerman; Evgeni M. Chesnokov

2008-02-01T23:59:59.000Z

233

Mimbres rock art: a graphic legacy of cultural expression  

E-Print Network [OSTI]

Rock art abounds along the Mimbres River banks and drainage tributaries reflecting the rich cultural remains of the ancient Mimbres people. The Mimbres are a well established cultural group who lived in southwest New Mexico and northern Mexico from...

Tidemann, Kathryn

2012-06-07T23:59:59.000Z

234

Experimental Study on Rock Deformation and Permeability Variation  

E-Print Network [OSTI]

The development of a petroleum reservoir would inevitably induce a rearrangement of the in-situ stress field. The rearrangement of the stress field would then bring about a deformation of the reservoir rock and a change of the permeability...

Ding, Jihui

2013-08-01T23:59:59.000Z

235

Acid Fracture and Fracture Conductivity Study of Field Rock Samples  

E-Print Network [OSTI]

Acid fracturing is a well stimulation strategy designed to increase the productivity of a producing well. The parameters of acid fracturing and the effects of acid interaction on specific rock samples can be studied experimentally. Acid injection...

Underwood, Jarrod

2013-11-15T23:59:59.000Z

236

Modeling of Seismic Signatures of Carbonate Rock Types  

E-Print Network [OSTI]

Carbonate reservoirs of different rock types have wide ranges of porosity and permeability, creating zones with different reservoir quality and flow properties. This research addresses how seismic technology can be used to identify different...

Jan, Badr H.

2011-02-22T23:59:59.000Z

237

Rock Sampling At Long Valley Caldera Geothermal Area (Goff, Et...  

Open Energy Info (EERE)

pre-intrusive metavolcanic and metasedimentary rocks can have considerably higher Sr-isotope ratios (0.7061-0.7246 and 0.7090-0.7250, respectively). Hydrothermally altered...

238

Microsoft Word - CX_HatRockEquipmentDisposition.docx  

Broader source: Energy.gov (indexed) [DOE]

station taps PacifiCorp's McNary-Wallula 230-kilovolt (kV) line to serve BPA's Hat Rock Substation. PacifiCorp is in the process of rebuilding the switching station, including...

239

Mathematical model of a Hot Dry Rock system  

Science Journals Connector (OSTI)

......efficiency calculations, geothermal energy, Hot Dry Rock, multiple crack...is to estimate the amount of energy which may be produced by a geothermic power station. Heat capacity...provides a large resource of energy. To obtain the energy cold......

Norbert Heuer; Tassilo Küpper; Dirk Windelberg

1991-06-01T23:59:59.000Z

240

Hot rocks could help meet US energy needs  

Science Journals Connector (OSTI)

... -4 Hot rocks could help meet US energy needs LucyOdling-Smee Get more out of geothermal, experts advise. ... , experts advise.Geothermal energy takes advantage of heat naturally generated within the earth. Punchstock Nature energy focus ...

Lucy Odling-Smee

2007-01-23T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Asphaltene Deposition in Carbonate Rocks: Experimental Investigation and Numerical Simulation  

Science Journals Connector (OSTI)

Asphaltene Deposition in Carbonate Rocks: Experimental Investigation and Numerical Simulation ... Interfacial tension (IFT) as one of the main properties for efficient CO2 flooding planning in oil reservoirs depends strongly on pressure, temperature, and composition of the reservoir fluids. ...

Shahin Kord; Rohaldin Miri; Shahab Ayatollahi; Mehdi Escrochi

2012-06-20T23:59:59.000Z

242

Reservoir Investigations on the Hot Dry Rock Geothermal System...  

Open Energy Info (EERE)

Investigations on the Hot Dry Rock Geothermal System, Fenton Hill, New Mexico- Tracer Test Results Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

243

Fluid-Rock Interaction in Geothermal Energy Recovery  

Science Journals Connector (OSTI)

Reaction of aqueous fluids with minerals of geothermal energy reservoir rocks produces both secondary solid phases ... for these effects. Heat production from chemical energy is possible in relevant amounts, but ...

E. Althaus

1980-01-01T23:59:59.000Z

244

Hot Dry Rock Reservoir Engineering | Open Energy Information  

Open Energy Info (EERE)

hydraulically connect the wells. Water pumped down the injection well and through the fracture system is heated by contact with the hot rock and rises to the production well. This...

245

FREQUENCY DEPENDENT ELASTIC AND ANELASTIC PROPERTIES OF CLASTIC ROCKS  

E-Print Network [OSTI]

was sequestered in a shallow saline aquifer where the vertical migration of the CO2 is controlled by shale changes in the compressibility of rocks. A large difference between the seismic and ultrasonic frequencies

246

The Effect of Heterogeneity on Matrix Acidizing of Carbonate Rocks  

E-Print Network [OSTI]

In matrix acidizing, the goal is to dissolve minerals in the rock to increase well productivity. This is accomplished by injecting an application-specific solution of acid into the formation at a pressure between the pore pressure and fracture...

Keys, Ryan S.

2010-07-14T23:59:59.000Z

247

Gamma-ray absorption and chemical composition of neovolcanic rocks  

Science Journals Connector (OSTI)

Gamma-ray absorption coefficients ? Cs 137 for a set of 49 neovolcanic rocks from the Bohemian Massif were measured; their values varied in the range from 0.2092 cm?1 to 0.2464 c...

V?ra Va?ková; Vladimír Kropá?ek; Reviewer J. Buben

1974-01-01T23:59:59.000Z

248

Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In...  

Open Energy Info (EERE)

Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, Usa Abstract Quantitative X-ray diffraction analysis of about 80 rhyolite and associated...

249

Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In...  

Open Energy Info (EERE)

Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, USA Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

250

Rock climbing sub-worlds: a segmentation study  

E-Print Network [OSTI]

ROCK CLIMBING SUB-WORLDS: A SEGMENTATION STUDY A Thesis by BRANDON WAYNE RAPELJE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 2004 Major Subject: Recreation, Park & Tourism Sciences ROCK CLIMBING SUB-WORLDS: A SEGMENTATION STUDY A Thesis by BRANDON WAYNE RAPELJE Submitted to Texas A&M University in partial fulfillment...

Rapelje, Brandon Wayne

2004-11-15T23:59:59.000Z

251

The effect of rock density in synthesizing seismic reflection records  

E-Print Network [OSTI]

was gained on the relative significance of rock densities in determining the reflection coefficient. The error which would be expected in the reflection coefficient at an interface when computed from the velocity inforsmtion only can be estimated from... was gained on the relative significance of rock densities in determining the reflection coefficient. The error which would be expected in the reflection coefficient at an interface when computed from the velocity inforsmtion only can be estimated from...

Morris, Gerald Brooks

2012-06-07T23:59:59.000Z

252

Comparison of linear and nonlinear acoustic probing of rock salt  

E-Print Network [OSTI]

COMPARISON OF LINEAR AND NONLINEAR ACOUSTIC PROBING OF ROCK SALT A Thesis by ALBERT MIN-HAO WANG Submitted to the Graduate College of Texas AIIM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August... 1980 Major Subject: Geophysics COMPARISON OF LINEAR AND NONLINEAR ACOUSTIC PROBING OF ROCK SALT A Thesis by ALBERT MIN-HAO 'RANG Approved as to style and content by: l('-/c~k~&(. Chairman o Comm ' ee Member) Member / I Member Head...

Wang, Albert Min-Hao

2012-06-07T23:59:59.000Z

253

Rock glacier monitoring with low-cost GPS  

E-Print Network [OSTI]

moving stations on rock glacier Low-cost L1 GPS receivers (blox) Power source: solar panels Local data Rock glacier GPS antennaGPS antenna Solar panelSolar panel Box incl.Box incl. -GPS receiverData logger Instruments Solar panelSolar panel (24W, 12V, 50x50cm)(24W, 12V, 50x50cm) Costs per station: 2

254

Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide  

Open Energy Info (EERE)

Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Carbonation Mechanism of Reservoir Rock by Supercritical Carbon Dioxide Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Project Description Supercritical CO2 is currently becoming a more common fluid for extracting volatile oil and fragrance compounds from various raw materials that are used in perfumery. Furthermore, its use as a heat transmission fluid is very attractive because of the greater uptake capability of heat from hot reservoir rock, compared with that of water. However, one concern was the reactivity of CO2 with clay and rock minerals in aqueous and non-aqueous environments. So if this reaction leads to the formation of water-soluble carbonates, such formation could be detrimental to the integrity of wellbore infrastructure.

255

Geotechnical Features of the Volcanic Rocks Related to the Arteara Rock Avalanche in Gran Canaria (Canary Islands, Spain)  

Science Journals Connector (OSTI)

The Arteara rock avalanche is developed in the Fataga Group which is related to the first volcanic stage in the Gran Canaria Island (8.6–13.3 Ma)....

Martín Jesús Rodríguez-Peces; Jorge Yepes Temiño…

2013-01-01T23:59:59.000Z

256

On Two-Phase Relative Permeability and Capillary Pressure of Rough-Walled Rock Fractures  

E-Print Network [OSTI]

in Single Rock Joints", Licentiate Thesis, Lulea Universityof Technology, Lulea, Sweden. Heiba, A. A. , Sahimi, M. ,

Pruess ed, K.; Tsang, Y.W.

1989-01-01T23:59:59.000Z

257

Water Rock Interaction [WRI 14] Groundwater salinization in a coastal multilayer aquifer  

E-Print Network [OSTI]

social and environmental changes. This paper focuses on the groundwater geochemistry in a costal the last decades. These evolutions gave rise to numerous environmental consequences, such as a dramatic decline of the piezometric levels, groundwater salinization and contamination. This degradation of natural

Boyer, Edmond

258

Trace element and isotope geochemistry of geothermal fluids, East Rift Zone, Kilauea, Hawaii  

SciTech Connect (OSTI)

A research program has been undertaken in an effort to better characterize the composition and the precipitation characteristic of the geothermal fluids produced by the HGP-A geothermal well located on the Kilauea East Rift Zone on the Island of Hawaii. The results of these studies have shown that the chemical composition of the fluids changed over the production life of the well and that the fluids produced were the result of mixing of at least two, and possibly three, source fluids. These source fluids were recognized as: a sea water composition modified by high temperature water-rock reactions; meteoric recharge; and a hydrothermal fluid that had been equilibrated with high temperature reservoir rocks and magmatic volatiles. Although the major alkali and halide elements show clearly increasing trends with time, only a few of the trace transition metals show a similar trend. The rare earth elements, were typically found at low concentrations and appeared to be highly variable with time. Studies of the precipitation characteristics of silica showed that amorphous silica deposition rates were highly sensitive to fluid pH and that increases in fluid pH above about 8.5 could flocculate more than 80% of the suspended colloidal silica in excess of its solubility. Addition of transition metal salts were also found to enhance the recovery fractions of silica from solution. The amorphous silica precipitate was also found to strongly scavenge the alkaline earth and transition metal ions naturally present in the brines; mild acid treatments were shown to be capable of removing substantial fractions of the scavenged metals from the silica flocs yielding a moderately pure gelatinous by-product. Further work on the silica precipitation process is recommended to improve our ability to control silica scaling from high temperature geothermal fluids or to recover a marketable silica by-product from these fluids prior to reinjection.

West, H.B.; Delanoy, G.A.; Thomas, D.M. (Hawaii Univ., Honolulu, HI (United States). Hawaii Inst. of Geophysics); Gerlach, D.C. (Lawrence Livermore National Lab., CA (United States)); Chen, B.; Takahashi, P.; Thomas, D.M. (Hawaii Univ., Honolulu, HI (United States) Evans (Charles) and Associates, Redwood City, CA (United States))

1992-01-01T23:59:59.000Z

259

MECHANICAL DEGRADATION OF EMPLACEMENT DRIFTS AT YUCCA MOUNTAIN - A CASE STUDY IN ROCK MECHANICS, PART 1: NONLITHOPHYSAL ROCK, PART 2: LITHOPHYSAL ROCK  

SciTech Connect (OSTI)

This paper outlines rock mechanics investigations associated with mechanical degradation of planned emplacement drifts at Yucca Mountain, which is the designated site for a US high-level nuclear waste repository. The factors leading to drift degradation include stresses from the overburden, stresses induced by the heat released from the emplaced waste, stresses due to seismically related ground motions, and time-dependent strength degradation. The welded tuff emplacement horizon consists of two groups of rock with distinct engineering properties: nonlithophysal units and lithophysal units, based on the relative proportion of lithophysal cavities. Part I of the paper concentrates on the generally hard, strong, and fractured nonlithophysal rock. The degradation behavior of the tunnels in the nonlithophysal rock is controlled by the occurrence of keyblocks. A statistically equivalent fracture model was generated based on extensive underground fracture mapping data from the Exploratory Studies Facility at Yucca Mountain. Three-dimensional distinct block analyses, generated with the fracture patterns randomly selected from the fracture model, were developed with the consideration of in situ, thermal, seismic loads. In this study, field data, laboratory data, and numerical analyses are well integrated to provide a solution for the unique problem of modeling drift degradation throughout the regulatory period for repository performance.

M. Lin, D. Kicker, B. Damjanac, M. Board, and M. Karakouzian

2006-02-27T23:59:59.000Z

260

Understanding Partition Coefficient, Kd, Values Volume II: Review of Geochemistry and Available Kd Values for Cadmium, Cesium, Chromium, Lead, Plutonium, Radon, Strontium, Thorium, Tritium (3H), and Uranium  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Air and Radiation Air and Radiation EPA 402-R-99-004B Environmental Protection August 1999 Agency UNDERSTANDING VARIATION IN PARTITION COEFFICIENT, K d , VALUES Volume II: Review of Geochemistry and Available K d Values for Cadmium, Cesium, Chromium, Lead, Plutonium, Radon, Strontium, Thorium, Tritium ( 3 H), and Uranium UNDERSTANDING VARIATION IN PARTITION COEFFICIENT, K d , VALUES Volume II: Review of Geochemistry and Available K d Values for Cadmium, Cesium, Chromium, Lead, Plutonium, Radon, Strontium, Thorium, Tritium ( 3 H), and Uranium August 1999 A Cooperative Effort By: Office of Radiation and Indoor Air Office of Solid Waste and Emergency Response U.S. Environmental Protection Agency Washington, DC 20460 Office of Environmental Restoration U.S. Department of Energy Washington, DC 20585

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

2 INVESTIGATION OF CRUDE OIL/BRINE/ROCK INTERACTION 2.1 EXPERIMENTAL STUDY OF CRUDE/BRINE/ROCK INTERACTION AT  

E-Print Network [OSTI]

INTERACTION AT RESERVOIR CONDITIONS 2.1.1 Introduction In the previous section, the fluid/rock interactions in this section and expand the understanding of the interactions of the Spraberry reservoir rock, oil and brine, brine displacement and rock wettability using low permeability Spraberry cores. A schematic

Schechter, David S.

262

1.4 PETROPHYSICS: Combined Rock and Fluid Character Integration of geological and petrophysical data allows development of a rock-fluid model for  

E-Print Network [OSTI]

the different rock types that comprise the subject reservoirs, marginal reservoirs and non-reservoir rocks). Analytical techniques used to develop this model include porosity-permeability analysis of core plug samples.4.2.2.1 Permeability determination with Nitrogen Flow Through Rock Type: Core plug samples of 1 in. and 1.5-in

Schechter, David S.

263

Potential for tunneling based on rock and soil melting. Abstracts  

SciTech Connect (OSTI)

The rock-melting drill was invented at Los Alamos Scientific Laboratory in 1960. Electrically heated, laboratory-scale drills were subsequently shown to penetrate igneous rocks at usefully high rates, with moderate power consumptions. The development of compact nuclear reactors and of heat pipes now makes possible the extension of this technology to much larger melting penetrators, potentially capable of producing holes up to several meters in diameter and several tens of kilometers long or deep. Development of a rapid, versatile, economical method of boring large, long shafts and tunnels offers solutions to many of man's most urgent ecological, scientific, raw-materials, and energy-supply problems. A melting method appears to be the most promising and flexible means of producing such holes. It is relatively insensitive to the composition, hardness, structure, and temperature of the rock, and offers the possibilities of producing self-supporting, glass-lined holes in almost any formation and (using a technique called lithofracturing) of eliminating the debris-removal problem by forcing molten rock into cracks created in the bore wall. Large rock-melting penetrators, called Electric Subterrenes or Nuclear Subterrenes according to the energy source used, are discussed in this report, together with problems anticipated in their development. It is concluded that this development is within the grasp of present technology.

Rowley, J.C.

1985-01-01T23:59:59.000Z

264

Proceedings of the scientific visit on crystalline rock repository development.  

SciTech Connect (OSTI)

A scientific visit on Crystalline Rock Repository Development was held in the Czech Republic on September 24-27, 2012. The visit was hosted by the Czech Radioactive Waste Repository Authority (RAWRA), co-hosted by Sandia National Laboratories (SNL), and supported by the International Atomic Energy Agency (IAEA). The purpose of the visit was to promote technical information exchange between participants from countries engaged in the investigation and exploration of crystalline rock for the eventual construction of nuclear waste repositories. The visit was designed especially for participants of countries that have recently commenced (or recommenced) national repository programmes in crystalline host rock formations. Discussion topics included repository programme development, site screening and selection, site characterization, disposal concepts in crystalline host rock, regulatory frameworks, and safety assessment methodology. Interest was surveyed in establishing a %E2%80%9Cclub,%E2%80%9D the mission of which would be to identify and address the various technical challenges that confront the disposal of radioactive waste in crystalline rock environments. The idea of a second scientific visit to be held one year later in another host country received popular support. The visit concluded with a trip to the countryside south of Prague where participants were treated to a tour of the laboratory and underground facilities of the Josef Regional Underground Research Centre.

Mariner, Paul E.; Hardin, Ernest L.; Miksova, Jitka [RAWRA, Czech Republic

2013-02-01T23:59:59.000Z

265

A-type granites and related rocks: Petrogenesis and classification  

Science Journals Connector (OSTI)

Abstract The problems of identification of A-type granitoids are analyzed. These rocks occur in different geodynamic settings. Owing to their mantle nature, they show distinct REE specialization. These are acid intrusive rocks, whose volcanic products are of crucial scientific and practical significance. However, neither the great number of proposed classification schemes and diagrams, including those based on expensive analytical data, nor hot scientific discussions of their identification and the ambiguity of the term A-granitoids helped to determine their classification features in full measure. A principally new discriminant diagram is proposed for the classification of igneous A-type rocks, based on the analysis of earlier obtained results and the petrochemical composition of these rocks. A comparative analysis of subdivision of granites and related felsic volcanic rocks (SiO2 > 67 wt.%), based on the ternary (Na2O + K2O)–Fe2O3* × 5–(CaO + MgO) × 5 and other widely applied diagrams, has shown the advantage of the proposed discriminant diagram for the classification of A-type granitoids from different geodynamic settings.

A.V. Grebennikov

2014-01-01T23:59:59.000Z

266

PARKER-HEADGATE ROCK & PARKER-GILA  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PARKER-HEADGATE ROCK & PARKER-GILA PARKER-HEADGATE ROCK & PARKER-GILA 161-kV TRANSMISSION LINE Cross Arm Repair and Helicopter Staging Areas Figure 1. Project Location Project Location j PARKER-HEADGATE ROCK & PARKER-GILA 161-kV TRANSMISSION LINE Cross Arm Repair and Helicopter Staging Areas Figure 2a. Project Area (North) Staging Area #4 Structure 3/5 Structure 3/6 Structure 3/4 Structure 3/7 Structure 3/5 Structure 3/6 PARKER-HEADGATE ROCK 161-kV TRANSMISSION LINE PARKER-GILA 161-kV TRANSMISSION LINE Structure 4/6 Legal Description N N 1:24000 scale 1:24000 scale Section Township Range 17 20 2 N 27 E 31 11 N 18 W 6 10 N USGS TOPO MAP: Cross Roads, Arizona-California USGS TOPO MAP: Cross Roads, Arizona-California PARKER-HEADGATE ROCK & PARKER-GILA 161-kV TRANSMISSION LINE Cross Arm Repair and Helicopter Staging Areas

267

Black Rock III Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Black Rock III Geothermal Project Black Rock III Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Black Rock III Geothermal Project Project Location Information Coordinates The following coordinate was not recognized: 33°19'59" N, 115°50'3 W.The following coordinate was not recognized: 33°19'59" N, 115°50'3 W. Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

268

Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area (Woldegabriel & Goff, 1992) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area (Woldegabriel & Goff, 1992) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness not indicated DOE-funding Unknown Notes Useful for age determinations - not indicated is useful for exploration. References Giday WoldeGabriel, Fraser Goff (1992) K-Ar Dates Of Hydrothermal

269

3rd Rock Systems and Technologies | Open Energy Information  

Open Energy Info (EERE)

Rock Systems and Technologies Rock Systems and Technologies Jump to: navigation, search Name 3rd Rock Systems and Technologies Place Burlingame, California Zip 94010 Sector Renewable Energy, Services Product Provides proven renewable energy technologies and consulting services to residential, commercial, and industrial clients. Coordinates 38.753055°, -95.834619° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.753055,"lon":-95.834619,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

270

AltaRock Energy Inc | Open Energy Information  

Open Energy Info (EERE)

AltaRock Energy Inc AltaRock Energy Inc Jump to: navigation, search Name AltaRock Energy Address 7900 E Green Lake Drive N Place Seattle, Washington Zip 98103 Sector Geothermal energy Product Creates geothermal energy reservoirs, develops geothermal facilities Website http://www.altarockenergy.com/ Coordinates 47.6855466°, -122.3364827° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.6855466,"lon":-122.3364827,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

271

Chimney Rock Public Power Dist | Open Energy Information  

Open Energy Info (EERE)

Chimney Rock Public Power Dist Chimney Rock Public Power Dist Jump to: navigation, search Name Chimney Rock Public Power Dist Place Nebraska Utility Id 3495 Utility Location Yes Ownership P NERC Location MRO NERC MRO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png ELECTRIC THERMAL STORAGE Commercial GENERAL SEASONAL Commercial IRRIGATION SERVICE Single Phase Commercial IRRIGATION SERVICE Three Phase Commercial IRRIGATION STANDBY RATE, Single Phase Commercial IRRIGATION STANDBY RATE, Three Phase Commercial LARGE POWER SERVICE Commercial RESIDENTIAL SERVICE AND SEASONAL SERVICE Residential

272

City of Rock Hill, South Carolina (Utility Company) | Open Energy  

Open Energy Info (EERE)

Rock Hill, South Carolina (Utility Company) Rock Hill, South Carolina (Utility Company) Jump to: navigation, search Name City of Rock Hill Place South Carolina Utility Id 16195 Utility Location Yes Ownership M NERC Location SERC Activity Bundled Services Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png 175 Watt HPS lighting Lighting Economic Development Rate (Schedule EDR -1) Commercial Economic Development Rate (Schedule EDR -2) Industrial Flood Lighting Rate 1000 Watt HPS Lighting Flood Lighting Rate 400 Watt HPS Lighting General Service/ Non Demand (Schedule GS) Commercial General Service/Demand (Schedule GD) Industrial

273

Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions | Open  

Open Energy Info (EERE)

Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Jump to: navigation, search Geothermal Lab Call Projects for Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Loading map... {"format":"googlemaps3","type":"ROADMAP","types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":200,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"\u2026 further results","default":"","geoservice":"google","zoom":false,"width":"600px","height":"350px","centre":false,"layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","icon":"","visitedicon":"","forceshow":true,"showtitle":true,"hidenamespace":false,"template":false,"title":"","label":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"locations":[{"text":"

274

Stable isotope geochemistry of coal bed and shale gas and related production waters: A review  

Science Journals Connector (OSTI)

Abstract Coal bed and shale gas can be of thermogenic, microbial or of mixed origin with the distinction made primarily on the basis of the molecular and stable isotope compositions of the gases and production waters. Methane, ethane, carbon dioxide and nitrogen are the main constituents of coal bed and shale gases, with a general lack of C2+ hydrocarbon species in gases produced from shallow levels and more mature coals and shales. Evidence for the presence of microbial gas include ?13C–CH4 values less than ? 50‰, covariation of the isotope compositions of gases and production water, carbon and hydrogen isotope fractionations consistent with microbial processes, and positive ?13C values of dissolved inorganic carbon in production waters. The CO2-reduction pathway is distinguished from acetate/methyl-type fermentation by somewhat lower ?13C–CH4 and higher ?D–CH4, but can also have overlapping values depending on the openness of the microbial system and the extent of substrate depletion. Crossplots of ?13C–CH4 versus ?13C–CO2 and ?D–CH4 versus ?13C–H2O may provide a better indication of the origin of the gases and the dominant metabolic pathway than the absolute carbon and hydrogen isotope compositions of methane. In the majority of cases, microbial coal bed and shale gases have carbon and hydrogen isotope fractionations close to those expected for CO2 reduction. Primary thermogenic gases have ?13C–CH4 values greater than ? 50‰, and ?13C values that systematically increase from C1 to C4 and define a relatively straight line when plotted against reciprocal carbon number. Although coals and disseminated organic matter in shales represent a continuum as hydrocarbon source rocks, current data suggest a divergence between these two rock types at the high maturity end. In deep basin shale gas, reversals or rollovers in molecular and isotopic compositions are increasingly reported in what is effectively a closed shale system as opposed to the relative openness in coal measure environments. Detailed geochemical studies of coal bed and shale gas and related production waters are essential to determine not only gas origins but also the dominant methanogenic pathway in the case of microbial gases.

Suzanne D. Golding; Chris J. Boreham; Joan S. Esterle

2013-01-01T23:59:59.000Z

275

Predicting the transport properties of sedimentary rocks from microstructure  

SciTech Connect (OSTI)

Understanding transport properties of sedimentary rocks, including permeability, relative permeability, and electrical conductivity, is of great importance for petroleum engineering, waste isolation, environmental restoration, and other applications. These transport properties axe controlled to a great extent by the pore structure. How pore geometry, topology, and the physics and chemistry of mineral-fluid and fluid-fluid interactions affect the flow of fluids through consolidated/partially consolidated porous media are investigated analytically and experimentally. Hydraulic and electrical conductivity of sedimentary rocks are predicted from the microscopic geometry of the pore space. Cross-sectional areas and perimeters of individual pores are estimated from two-dimensional scanning electron microscope (SEM) photomicrographs of rock sections. Results, using Berea, Boise, Massilon, and Saint-Gilles sandstones show close agreement between the predicted and measured permeabilities. Good to fair agreement is found in the case of electrical conductivity. In particular, good agreement is found for a poorly cemented rock such as Saint-Gilles sandstone, whereas the agreement is not very good for well-cemented rocks. The possible reasons for this are investigated. The surface conductance contribution of clay minerals to the overall electrical conductivity is assessed. The effect of partial hydrocarbon saturation on overall rock conductivity, and on the Archie saturation exponent, is discussed. The region of validity of the well-known Kozeny-Carman permeability formulae for consolidated porous media and their relationship to the microscopic spatial variations of channel dimensions are established. It is found that the permeabilities predicted by the Kozeny-Carman equations are valid within a factor of three of the observed values methods.

Schlueter, E.M.

1995-01-01T23:59:59.000Z

276

SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES  

SciTech Connect (OSTI)

As part of our study on ''Relationships between seismic properties and rock microstructure'', we have (1) Studied relationships between velocity and permeability. (2) Used independent experimental methods to measure the elastic moduli of clay minerals as functions of pressure and saturation. (3) Applied different statistical methods for characterizing heterogeneity and textures from scanning acoustic microscope (SAM) images of shale microstructures. (4) Analyzed the directional dependence of velocity and attenuation in different reservoir rocks (5) Compared Vp measured under hydrostatic and non-hydrostatic stress conditions in sands. (6) Studied stratification as a source of intrinsic anisotropy in sediments using Vp and statistical methods for characterizing textures in sands.

Gary Mavko

2003-10-01T23:59:59.000Z

277

Ozone generation by rock fracture: Earthquake early warning?  

SciTech Connect (OSTI)

We report the production of up to 10 ppm ozone during crushing and grinding of typical terrestrial crust rocks in air, O{sub 2} and CO{sub 2} at atmospheric pressure, but not in helium or nitrogen. Ozone is formed by exoelectrons emitted by high electric fields, resulting from charge separation during fracture. The results suggest that ground level ozone produced by rock fracture, besides its potential health hazard, can be used for early warning in earthquakes and other catastrophes, such as landslides or land shifts in excavation tunnels and underground mines.

Baragiola, Raul A.; Dukes, Catherine A.; Hedges, Dawn [Engineering Physics, University of Virginia, Charlottesville, Virginia 22904 (United States)

2011-11-14T23:59:59.000Z

278

Microfractures in rocks from two geothermal areas | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Microfractures in rocks from two geothermal areas Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Microfractures in rocks from two geothermal areas Details Activities (2) Areas (2) Regions (0) Abstract: Core samples from the Dunes, California, and Raft River, Idaho, geothermal areas show diagenesis superimposed on episodic fracturing and fracture sealing. The minerals that fill fractures show significant temporal variations. Sealed fractures can act as barriers to fluid flow. Sealed fractures often mark boundaries between regions of significantly

279

Geochemistry of Salado Formation brines recovered from the Waste Isolation Pilot Plant (WIPP) repository  

SciTech Connect (OSTI)

Intergranular brines recovered from the repository horizon of the Waste Isolation Pilot Plant (WIPP) have major- and trace-element compositions that reflect seawater evaporation and diagenetic processes. Brines obtained from repository drill holes are heterogenous with respect to composition, but their compositional fields are distinct from those obtained from fluid inclusions in WIPP halite. The heterogeneity of brine compositions within the drill-hole population indicates a lack of mixing and fluid homogenization within the salt at the repository level. Compositional differences between intergranular (drill hole) and intragranular (fluid inclusions) brines is attributed to isolation of the latter from diagenetic fluids that were produced from dehydration reactions involving gypsum and clay minerals. Modeling of brine-rock equilibria indicates that equilibration with evaporite minerals controls the concentrations of major elements in the brine. Drill-hole brines are in equilibrium with the observed repository minerals halite, anhydrite, magnesite, polyhalite and quartz. The equilibrium model supports the derivation of drill-hole brines from near-field fluid, rather than large-scale vertical migration of fluids from the overlying Rustler or underlying Castile Formations. 13 refs., 6 figs., 6 tabs.

Abitz, R.; Myers, J.; Drez, P.; Deal, D.

1990-01-01T23:59:59.000Z

280

Geohydromechanical Processes in the Excavation Damaged Zone in Crystalline Rock, Rock Salt, and Indurated and Plastic Clays  

SciTech Connect (OSTI)

The creation of an excavation disturbed zone or excavation damaged zone is expected around all man-made openings in geologic formations. Macro- and micro-fracturing, and in general a redistribution of in situ stresses and rearrangement of rock structures, will occur in this zone, resulting in drastic changes of permeability to flow, mainly through the fractures and cracks induced by excavation. Such an EDZ may have significant implications for the operation and long-term performance of an underground nuclear waste repository. Various issues of concern need to be evaluated, such as processes creating fractures in the excavation damaged zone, the degree of permeability increase, and the potential for sealing or healing (with permeability reduction) in the zone. In recent years, efforts along these lines have been made for a potential repository in four rock types-crystalline rock, salt, indurated clay, and plastic clay-and these efforts have involved field, laboratory, and theoretical studies. The present work involves a synthesis of the ideas and issues that emerged from presentations and discussions on EDZ in these four rock types at a CLUSTER Conference and Workshop held in Luxembourg in November, 2003. First, definitions of excavation disturbed and excavation damaged zones are proposed. Then, an approach is suggested for the synthesis and intercomparison of geohydromechanical processes in the EDZ for the four rock types (crystalline rock, salt, indurated clay, and plastic clay). Comparison tables of relevant processes, associated factors, and modeling and testing techniques are developed. A discussion of the general state-of-the-art and outstanding issues are also presented. A substantial bibliography of relevant papers on the subject is supplied at the end of the paper.

Tsang, Chin-Fu; Bernier, Frederic; Davies, Christophe

2004-06-20T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Roth Rock Wind Power Project | Open Energy Information  

Open Energy Info (EERE)

Rock Wind Power Project Rock Wind Power Project Jump to: navigation, search Name Roth Rock Wind Power Project Facility Roth Rock Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Gestamp Wind North America Developer Synergics Energy Purchaser Delmarva Power Location South of Red House MD Coordinates 39.30105°, -79.458032° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.30105,"lon":-79.458032,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

282

Lithostratigraphic Classification of Basement Rocks of the Wichita Province, Oklahoma  

Science Journals Connector (OSTI)

...Scale .bar = 5 nun; crossed nicols. (Sample WM-142 near Panther Creek, Wichita Mountains Wildlife Refuge.) 1-- t o be s...l i t i c rocks i n t h e Wichita province. f Q - The name Car.lton Rhyolite was f i r s t used by . Schoonover (19481...

Benjamin N. Powell; M. Charles Gilbert; Joseph F. Fischer

283

SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES  

SciTech Connect (OSTI)

As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Methods for detection of stress-induced velocity anisotropy in sands. (2) We have initiated efforts for velocity upscaling to quantify long-wavelength and short-wavelength velocity behavior and the scale-dependent dispersion caused by sediment variability in different depositional environments.

Gary Mavko

2003-06-30T23:59:59.000Z

284

Ion beam analyses of radionuclide migration in heterogeneous rocks  

Science Journals Connector (OSTI)

The migration of radionuclides (RN) in the environment is a topic of general interest for its implications on public health and it is an issue for the long-term safety studies of deep geological repositories (DGR) for high-level radioactive waste. The role played by colloids on RN migration is also of great concern. Diffusion and sorption are fundamental mechanisms controlling RN migration in rocks and many experimental approaches are applied to determine transport parameters for low sorbing RN in homogeneous rocks. However it is difficult to obtain relevant data for high sorbing RN or colloids for which diffusion lengths are extremely short or within heterogeneous rocks where transport might be different in different minerals. The ion beam techniques Rutherford Backscattering Spectrometry (RBS) and micro-Particle Induced X-Ray Emission (?PIXE) rarely applied in the field were selected for their micro-analytical potential to study RN diffusion and surface retention within heterogeneous rocks. Main achievements obtained during last 12 years are highlighted.

Valentino Rigato

2013-01-01T23:59:59.000Z

285

A NEW MODEL FOR PERFORMANCE PREDICTION OF HARD ROCK TBMS.  

E-Print Network [OSTI]

methods to accu- rately predict the penetration rate of a TBM in a given geology. These models are mainly, and the penetration rate. A good example of this is the Norwegian (NTH) hard rock diagnostic system and predictor penetration rate. This group of models 1.ResearchAssociakandGraduacStudentinMiningErrg.Dept. 2.Directorof

286

Dating and Context of Rock Engravings in Southern Africa  

Science Journals Connector (OSTI)

...we have recorded in the Orange-Vaal Basin (9.7 percent hu-man and 64 percent...andesite (or Dwyka tillites And shales of Permian age) are three distinct bodies of alluvium...Riet Lowe, The Distribution of Pre-historic Rock Engravings and Paintings in 1212...

Karl W. Butzer; Gerhai J. Fock; Louis Scott; Robert Stuckenrath

1979-03-23T23:59:59.000Z

287

Columbia River Channel Improvement Project Rock Removal Blasting: Monitoring Plan  

SciTech Connect (OSTI)

This document provides a monitoring plan to evaluate take as outlined in the National Marine Fisheries Service 2002 Biological Opinion for underwater blasting to remove rock from the navigation channel for the Columbia River Channel Improvement Project. The plan was prepared by the Pacific Northwest National Laboratory (PNNL) for the U.S. Army Corps of Engineers (USACE), Portland District.

Carlson, Thomas J.; Johnson, Gary E.

2010-01-29T23:59:59.000Z

288

A rock engraving made by Neanderthals in Gibraltar  

Science Journals Connector (OSTI)

...u-bordeaux.fr/TIVMI/). The 3D video was created using Autodesk 3ds Max and Adobe Premiere Pro CC. A rock engraving made by...u-bordeaux.fr/TIVMI/). The 3D video was created using Autodesk 3ds Max and Adobe Premiere Pro CC. Movie S1 Other Supporting...

Joaquín Rodríguez-Vidal; Francesco d’Errico; Francisco Giles Pacheco; Ruth Blasco; Jordi Rosell; Richard P. Jennings; Alain Queffelec; Geraldine Finlayson; Darren A. Fa; José María Gutiérrez López; José S. Carrión; Juan José Negro; Stewart Finlayson; Luís M. Cáceres; Marco A. Bernal; Santiago Fernández Jiménez; Clive Finlayson

2014-01-01T23:59:59.000Z

289

Aspects of rock physics in 4-D seismology  

SciTech Connect (OSTI)

In recent years, time-lapse 3-13 or 4-D seismology has been used to identify bypassed oil, to monitor steam and CO[sub 2] injection processes, and even to track the movement of the injected water. However, the feasibility of applying seismic technology to monitoring oil recovery processes and the ability to interpret the seismic results depend to a large extent on the understanding of the physics or seismic properties of the reservoir rocks and fluids. We have carried out several laboratory rock physics investigations on seismic properties of reservoir rocks in relation to oil recovery processes. Particularly, we found that seismic properties were dramatically affected by he injected steam in heavy oil sands, by the injected CO[sub 2] in carbonate rocks, and in some cases, by the injected water in light oil reservoir sands. In this paper, we present laboratory results of seismic properties of oil lands from several places in the world, including Indonesia, Canada, and of West Texas carbonates undergoing CO[sub 2] injection. We discuss the effects of reservoir geology, fluid properties, and recovery process on the seismic properties and how the laboratory results can be used in the feasibility studies and seismic interpretations. We also show examples of 4-D and cross-well seismic results from the Duri field, Indonesia, and from a West Texas carbonate field undergoing CO[sub 2] flooding.

Wang, Zhijing; Langan, R. (Chevron Petroleum Technology Co., La Habra, CA (United States)); Jenkins, S.; Bee, M.; Waite, M. (Caltex Pacific Indonesia, Rumbai (Indonesia))

1996-01-01T23:59:59.000Z

290

Aspects of rock physics in 4-D seismology  

SciTech Connect (OSTI)

In recent years, time-lapse 3-13 or 4-D seismology has been used to identify bypassed oil, to monitor steam and CO{sub 2} injection processes, and even to track the movement of the injected water. However, the feasibility of applying seismic technology to monitoring oil recovery processes and the ability to interpret the seismic results depend to a large extent on the understanding of the physics or seismic properties of the reservoir rocks and fluids. We have carried out several laboratory rock physics investigations on seismic properties of reservoir rocks in relation to oil recovery processes. Particularly, we found that seismic properties were dramatically affected by he injected steam in heavy oil sands, by the injected CO{sub 2} in carbonate rocks, and in some cases, by the injected water in light oil reservoir sands. In this paper, we present laboratory results of seismic properties of oil lands from several places in the world, including Indonesia, Canada, and of West Texas carbonates undergoing CO{sub 2} injection. We discuss the effects of reservoir geology, fluid properties, and recovery process on the seismic properties and how the laboratory results can be used in the feasibility studies and seismic interpretations. We also show examples of 4-D and cross-well seismic results from the Duri field, Indonesia, and from a West Texas carbonate field undergoing CO{sub 2} flooding.

Wang, Zhijing; Langan, R. [Chevron Petroleum Technology Co., La Habra, CA (United States); Jenkins, S.; Bee, M.; Waite, M. [Caltex Pacific Indonesia, Rumbai (Indonesia)

1996-12-31T23:59:59.000Z

291

Investigation of a hydraulic impact a technology in rock breaking  

E-Print Network [OSTI]

on the environment such as fly rocks, air blast, noise pollution and toxic fumes. When blasting occurs close in mining industry. The impact process of a high speed piston on liquid water, previously introduced mining practice. From the technical point of view, although explosive method is powerful, it does

292

Process of breaking and rendering permeable a subterranean rock mass  

DOE Patents [OSTI]

The process of the present invention involves the following steps: producing, as by hydrofracing, a substantially horizontal fracture in the subterranean rock mass to be processed; emplacing an explosive charge in the mass in spaced juxtaposed position to the fracture; enlarging the fracture to create a void space thereat, an initial lifting of the overburden, and to provide a free face juxtaposed to and arranged to cooperate with the emplaced explosive charge; and exploding the charge against the free face for fragmenting the rock and to distribute the space, thus providing fractured, pervious, rubble-ized rock in an enclosed subterranean chamber. Firing of the charge provides a further lifting of the overburden, an enlargement of the chamber and a larger void space to distribute throughout the rubble-ized rock within the chamber. In some forms of the invention an explosive charge is used to produce a transitory enlargement of the fracture, and the juxtaposed emplaced charge is fired during the critical period of enlargement of the fracture.

Lekas, Mitchell A. (Concord, CA)

1980-01-01T23:59:59.000Z

293

Fluid-Rock Interaction: A Reactive Transport Approach  

Science Journals Connector (OSTI)

...fluid-rock interaction systems as well-mixed reactors was challenged and it was shown how an...Q, Lichtner PC, Zhang D (2007) An improved lattice Boltzmann model for multicomponent...Eric H. editor CNRS-Universite Paul Sabatier, Laboratoire de Mecanisme de Transfert...

Carl I. Steefel; Kate Maher

294

Rock-physics Models for Gas-hydrate Systems Associated  

E-Print Network [OSTI]

Rock-physics Models for Gas-hydrate Systems Associated with Unconsolidated Marine Sediments Diana associated with unconsolidated marine sediments. The goals are to predict gas-hydrate concentration from intercalated with unconsolidated sediments. We show that the geometrical details of how gas hy- drates

Texas at Austin, University of

295

Characterization of Geomechanical Poroelastic Parameters in Tight Rocks  

E-Print Network [OSTI]

In petroleum engineering and geophysics, it is often assumed that the rocks are completely rigid bodies with a totally interconnected pore space and that the fluid within the pores does not affect and are independent of the strains in the porous...

Chen Valdes, Clotilde Raquel

2013-08-15T23:59:59.000Z

296

ROCK: A Robust Clustering Algorithm for Categorical Attributes  

E-Print Network [OSTI]

. For data with categorical attributes, our findings indicate that ROCK not only generates better quality The problem of data mining or knowledge discovery has become increasingly important in recent years the author was visiting Bell Laboratories. 1 #12;and Italian wine, Swiss cheese and Belgian chocolate

Pennsylvania, University of

297

1 INTRODUCTION Stressing brittle rocks leads to the development of  

E-Print Network [OSTI]

-dependent creep driven by stress corrosion and subcritical crack growth (Lockner, 1998). This creep strongly of fa- tigue and crack growth velocity function. The present experimental work was conducted at the Rock- uniform distributions of microfractures are related to fault nucleation and growth (Reches & Lockner, 1994

Ze'ev, Reches

298

MATLOC. Transient Non Lin Deformation in Fractured Rock  

SciTech Connect (OSTI)

MATLOC is a nonlinear, transient, two-dimensional (planer and axisymmetric), thermal stress, finite-element code designed to determine the deformation within a fractured rock mass. The mass is modeled as a nonlinear anistropic elastic material which can exhibit stress-dependent bi-linear locking behavior.

Boonlualohr, P.; Mustoe, G.; Williams, J.R.; Lester, B.H.; Huyakorn, P.S. [Geotrans Inc., (United States)

1983-04-01T23:59:59.000Z

299

Wave Generation from Explosions in Rock Cavities CANGLI LIU1  

E-Print Network [OSTI]

Wave Generation from Explosions in Rock Cavities CANGLI LIU1 and THOMAS J. AHRENS1 Abstract Ð We have developed a measurement method to monitor P- and S-waves generated from laboratory diameter cavities. Stress waves generated by the explosions were recorded within a radius of 25 cm

Stewart, Sarah T.

300

Fluid inclusion geochemistry of halite from the Silurian A-1 Evaporite, Michigan Basin  

SciTech Connect (OSTI)

Fluids trapped in primary, inclusion-rich halite from the Silurian A-1 Evaporite of the Michigan Basin were analyzed to determine their elemental and isotopic composition and so constrain the fluid chemistry and regional variability of parent brines. The samples were collected from stratigraphically more complete basin center and basin margin cores than hitherto have been available. These include both inclusion-rich whole rock chips and fluids leached with isopropanol from crushed, inclusion-rich halite. Elemental ratios were determined relative to Mg, which is present only in the fluid phase of monomineralic halite samples and acts as a normalizing parameter against which to quantify fluid inclusion chemistry. Stable isotope ratios were determined on fluids collected from inclusion-rich halite by vacuum-thermal decrepitation. Inclusion fluids define a geochemical trend characterized by a Ca:Mg ratio of 1.4 [+-] 0.47, an Sr:Mg ratio of 0.015 [+-] 0.004 and a K:Mg ratio of 0.5 [+-] 0.17. Fluids are also depleted in SO[sub 4]. Importantly, these values are significantly different from any Michigan Basin formation brines and also cannot be derived from evaporation of modern seawater without extensive diagenetic modification. Two explanations of the data are possible. Pervasive syndepositional dolomitization and anhydrite precipitation may have altered Silurian brines of initial modern seawater composition, as has been suggested for similar data. However, consistently high cation ratios in the A-1 Evaporite on a regional scale demand striking uniformity in the timing and location of such reactions. Alternatively, Silurian seawater may have had elevated Ca:Mg, Sr:Mg and possibly K:Mg ratios relative to modern seawater.

Leibold, A.W.; Walter, L.M.; Huston, T.J.; O'Neil, J.R. (Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Geological Sciences)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Geochemistry and stable isotope constraints on high-temperature activity from sediment cores of the Saldanha hydrothermal field  

E-Print Network [OSTI]

hydrothermal processes occur, including reactions of the hydrothermal fluids with mafic and ultramafic rocks of seafloor hydrothermal processes. The focus on these ultramafic-hosted hydrothermal systems has increased, i of the Saldanha hydrothermal field Á.S. Dias a, ,1 , G.L. Früh-Green b,1 , S.M. Bernasconi c,1 , F.J.A.S. Barriga

Gilli, Adrian

302

Palaeomagnetism and Potassium-Argon Ages of Volcanic Rocks of Ngorongoro Caldera, Tanzania  

Science Journals Connector (OSTI)

......Volcanic Rocks of Ngorongoro Caldera, Tanzania* * Publication authorized by the Director...south-west wall of Ngorongoro caldera, Tanzania. The lowest three lavas are normally...Volcanic Rocks of Ngorongoro Caldera, Tanzania* C. S. Gromme, T. A. Reilly, A......

C. S. Grommé; T. A. Reilly; A. E. Mussett; R. L. Hay

1971-01-01T23:59:59.000Z

303

New techniques in rock mass classification: application to welded tuffs at the Nevada Yucca Mountain  

Science Journals Connector (OSTI)

Many rock mass classification systems exist to assist the engineer in assessing the rock support requirements for underground design. On-going research in this area is directed at attempting to utilize the fracta...

R. J. Watters; J. R. Carr; D. M. Chuck

1990-10-01T23:59:59.000Z

304

Transport and seismoelectric properties of porous permeable rock : numerical modeling and laboratory measurements  

E-Print Network [OSTI]

The objective of this thesis is to better understand the transport and seismoelectric (SE) properties of porous permeable rock. Accurate information of rock transport properties, together with pore geometry, can aid us to ...

Zhan, Xin, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

305

E-Print Network 3.0 - acid volcano-plutonic rocks Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the first of a long string of bad jokes, and start looking at rocks. Get yer hiking boots ready. Purpose... will be placed on the field relationships of the various rock units...

306

Measurement of thermal properties of select intact and weathered granulites and their relationship to rock properties  

Science Journals Connector (OSTI)

...in hard rock: Renewable Energy, 28 , no.-14...basalt samples in Egypt: Journal of Thermal...in hard rock: Renewable Energy, 28, no. 14...basalt samples in Egypt: Journal of Thermal...parameterization on surface energy fluxes and temperatures...

D. Ramakrishnan; Rishikesh Bharti; M. Nithya; K. N. Kusuma; K. D. Singh

307

Geochemistry of organic-rich black shales overlying the natural nuclear fission reactors of Oklo, Republic of Gabon  

SciTech Connect (OSTI)

The organic-rich black shales of the Franceville Series` FB Formation overlying the uranium ores, and natural nuclear fission reactors of Oklo, Gabon, are not notably metalliferous. Chromium, gold, silver, and barium are slightly enriched in average Oklo black shale (AOK) relative to black shale standard SDO-1. Geochemical variations among the black shale samples of the sedimentary sequence include enrichment in potassium, barium, chromium, and silver in the four lowermost samples, the presence of a bleached zone depleted in organic carbon lowermost in the sequence, and elevated rare earth element (REE) content in samples closest to the Oklo reactor zones. Hydrothermal activity has influenced the geochemistry of the black shale but is evidently not linked to reactor-driven processes. Chondrite-normalized REE patterns of Oklo black shale samples show slight enrichment in light REE and slight depletion in heavy REE, especially in the sample closest to the reactor zone. However, comparison of REE content with various petrographic facies in and near the Oklo reactors shows no apparent enrichment in fission product (intermediate) REE. With few exceptions, reactor facies all contain more REE than AOK. The chondrite-normalized REE pattern of AOK resembles that of greywacke-shale turbidites of Archean greenstone belts. The paucity of uranium and manganese in AOK is a curious anomaly in an area of world class uranium and manganese deposits.

Mossman, D.J. [Mount Allison Univ., Sackville, New Brunswick (Canada). Dept. of Physics, Engineering and Geoscience; Gauthier-Lafaye, F. [Centre National de la Recherche Scientifique, Strasbourg (France). Centre de Geochimie de la Surface; Nagy, B.; Rigali, M.J. [Univ. of Arizona, Tucson, AZ (United States)

1998-07-01T23:59:59.000Z

308

Modeling of coupled thermodynamic and geomechanical performance of underground compressed air energy storage (CAES) in lined rock caverns  

E-Print Network [OSTI]

Excavated Hard Rock Caverns. Pacific Northwest Laboratory,Lux, K.H. Design of salt caverns for the storage of naturalgas storage in unlined rock caverns. Int J Rock Mech Min Sc

Rutqvist, J.

2013-01-01T23:59:59.000Z

309

Anisotropy and spatial variation of relative permeability and lithologic character of Tensleep Sandstone reservoirs in the Bighorn and Wind River basins, Wyoming. Quarterly report, January 1, 1996--March 31, 1996  

SciTech Connect (OSTI)

Work in conjunction with Marathon Oil Company in the Oregon Basin field utilizing Formation MicroImager and Formation MicroScanner logs has been completed. Tensleep outcrops on the western side of the Bighorn Basin are not of the quality necessary to do detailed study of stratification. This made the use of borehole imaging logs, in which stratification can be recognized, particularly attractive for the western side of the Bighorn Basin. The borehole imaging logs were used to determine the dip angle and dip direction of stratification as well as to distinguish different lithologies. It is also possible to recognize erosional bounding surfaces and classify them according to a process-oriented hierarchy. Foreset and bounding surface orientation data was utilized to create bedform reconstructions in order to simulate the distribution of flow-units bounded by erosional surfaces. The bedform reconstructions indicate that the bedforms on the western side of the basin are somewhat different from those on the eastern side of the Bighorn Basin. A report has been submitted to Marathon Oil Company, the principal cost-share subcontractor. Marine dolomitic units initially identified and correlated in the Bighorn Basin have been correlated into the Wind River Basin. Gross and net sand maps have been produced for the entire upper Tensleep in the Bighorn and Wind River Basins, as well as for each of the eolian units identified in the study. These maps indicate an overall thickening of the Tensleep to the west and south. This thickening is a result of both greater subsidence to the west and south and greater differential erosion to the north and east. An article documenting the North Oregon Basin field study will appear in the Gulf Coast Society of Economic Paleontologists and Mineralogists Foundation Conference volume entitled {open_quotes}Stratigraphic Analysis Utilizing Advanced Geophysical, Wireline and Borehole Technology for Petroleum Exploration and Production{close_quotes}.

Dunn, T.L.

1996-04-26T23:59:59.000Z

310

Parametric Investigation of the Performance of Solar Heating Systems with Rock Bed Storage  

Science Journals Connector (OSTI)

The performance of solar air collector domestic heating systems with rock bed storage, as obtained from theoretical analysis, is...

W. L. Dutre; J. Vanheelen

1981-01-01T23:59:59.000Z

311

Esimation of field-scale thermal conductivities of unsaturated rocks from in-situ temperature data  

E-Print Network [OSTI]

Properties in Hard Rock, Ph.D. Thesis, Lulea Universityof Technology, Lulea, Sweden. Kolditz, O. and C. Clauser, (

Mukhopadhyay, Sumit; Tsang, Yvonne W.; Birkholzer, Jens T.

2008-01-01T23:59:59.000Z

312

Method of predicting the characteristics of a rock mass in hydrotechnical construction  

Science Journals Connector (OSTI)

1. The proposed method makes it possible to predict the characteristics of a rock mass when designing rockfill a...

O. A. Pakhomov

1987-10-01T23:59:59.000Z

313

We present two systems, reliable sockets (rocks) and reliable packets (racks), that provide transparent network connection  

E-Print Network [OSTI]

Abstract We present two systems, reliable sockets (rocks) and reliable packets (racks of the connection changes IP address, with correct recovery of in-flight data. To allow rocks and racks Protocol that enables the remote detection of rocks and racks, or any other socket enhancement system

Miller, Barton P.

314

Fluid substitution in carbonate rocks based on the Gassmann equation and Eshelby–Walsh theory  

Science Journals Connector (OSTI)

Abstract Fluid substitution in carbonate rocks is more difficult than it is in clastic rocks for two reasons. Firstly, the rock physics modeling uncertainties in carbonate rocks, this is due to the difficulty of accurately acquiring the moduli of carbonate rocks' solid matrix because the experimental data on carbonate rocks have not been as thoroughly studied as silici-clastic sedimentary rocks. Secondly, due to the complex pore systems of carbonate rocks, it is very difficult to model pore geometry of carbonates, and hence hard to assess how the elastic properties change as fluid saturation changes based on the traditional Biot and Gassmann theories. In order to solve these problems, we present a new fluid substitution equation of carbonate rocks using the Gassmann equation and Eshelby–Walsh theory (GEW) in this paper. Then, the specific procedures of how to calculate the moduli of carbonate rocks' solid matrix and how to measure the effect of pore geometry in fluid substitution based on the new fluid substation equation were illustrated by experimental testing about 12 carbonate rock samples in different fluid saturation scenarios and logging data. Finally, we further compared the new fluid substitution method with the conventional Gassmann fluid substitution based on the experimental data. The results verified that the new method is more accurate and reliable in the fluid substitution of complex carbonate rocks.

Quanxiong Feng; Lian Jiang; Mingquan Liu; Huan Wan; Li Chen; Wei Xiao

2014-01-01T23:59:59.000Z

315

Compressional and shear velocities of dry and saturated jointed rock: a laboratory study  

Science Journals Connector (OSTI)

......classification of rock mass qualities, Geophys...shallow jointed rock, Int. J...a jointed sandstone, in Mechanical...fracture permeability, Int. J...microcrack porosity. By modelling...and steam reservoirs require...hot-dry-rock method are...evaluating the quality of large...and fluid permeability. Seismic...aperture or porosity. Moos...velocity in a sandstone is independent......

R. M. Stesky

1985-10-01T23:59:59.000Z

316

Microsoft Word - CX-Wautoma-Rock Creek_WEB.doc  

Broader source: Energy.gov (indexed) [DOE]

3, 2010 3, 2010 REPLY TO ATTN OF: KEP-4 SUBJECT: Environmental Clearance Memorandum Corinn Castro Project Manager - TELM-TPP-3 Proposed Action: Replace spacer dampers along the Wautoma-Rock Creek No. 1 500-kV Transmission Line. Budget Information: Work Order # 00234527 PP&A Project No.: PP&A 1507 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.3, Routine maintenance activities...for structures, rights-of-way, infrastructures such as roads, equipment...routine maintenance activities, corrective....are required to maintain... infrastructures...in a condition suitable for a facility to be used for its designed purpose. Location: Wautoma-Rock Creek No. 1 500-kV Transmission Line. The proposed project is

317

Picture Rocks, Arizona: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Picture Rocks, Arizona: Energy Resources Picture Rocks, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.3459069°, -111.2462146° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.3459069,"lon":-111.2462146,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

318

MHK Projects/Race Rocks Demonstration | Open Energy Information  

Open Energy Info (EERE)

Race Rocks Demonstration Race Rocks Demonstration < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":48.2844,"lon":-123.531,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

319

Rock County, Minnesota: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rock County, Minnesota: Energy Resources Rock County, Minnesota: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 43.6927003°, -96.3226072° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.6927003,"lon":-96.3226072,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

320

Microsoft Word - CX-Hat_Rock_Switch_14June2013  

Broader source: Energy.gov (indexed) [DOE]

7, 2013 7, 2013 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Glenn Russell Project Manager -TPCV-TPP-4 Proposed Action: Hat Rock Switching Station Replacement Project Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 Additions and modifications to transmission facilities Location: Umatilla County, Oregon Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to fund PacifiCorp's rebuild of BPA's Hat Rock Tap Switching Station, which is located within PacifiCorp's McNary-Wallula 230-kilovolt (kV) transmission line right-of-way (ROW). Rebuilding the switching station would include the replacement of sectionalizing switches, the grounding grid, and all signage. The approximately 0.5-acre yard would

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Round Rock, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Round Rock, Texas: Energy Resources Round Rock, Texas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 30.5082551°, -97.678896° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":30.5082551,"lon":-97.678896,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

322

Rock River LLC Wind Farm | Open Energy Information  

Open Energy Info (EERE)

River LLC Wind Farm River LLC Wind Farm Jump to: navigation, search The Rock River LLC Wind Farm is in Carbon County, Wyoming. It consists of 50 turbines and has a total capacity of 50 MW. It is owned by Shell Wind Energy.[1] Based on assertions that the site is near Arlington, its approximate coordinates are 41.5946899°, -106.2083459°.[2] References ↑ http://www.wsgs.uwyo.edu/Topics/EnergyResources/wind.aspx ↑ http://www.thefreelibrary.com/Shell+WindEnergy+Acquires+Second+Wind+Farm+in+the+U.S.,+in+an...-a082345438 Retrieved from "http://en.openei.org/w/index.php?title=Rock_River_LLC_Wind_Farm&oldid=132230" Category: Wind Farms What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

323

Big Rock, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rock, Illinois: Energy Resources Rock, Illinois: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 41.7639181°, -88.5470219° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.7639181,"lon":-88.5470219,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

324

East Flat Rock, North Carolina: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Flat Rock, North Carolina: Energy Resources Flat Rock, North Carolina: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.2801166°, -82.4220631° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.2801166,"lon":-82.4220631,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

325

West Valley Demonstration Project 10282 Rock Springs Road  

Broader source: Energy.gov (indexed) [DOE]

West Valley Demonstration Project West Valley Demonstration Project 10282 Rock Springs Road West Valley, NY 141 71 -9799 Mr. Daniel W. Coyne President & General Manager CH2M HILL B&W West Valley, LLC West Valley Demonstration Project 10282 Rock Springs Road West Valley, NY 141 71 -9799 ATTENTION: J. D. Rendall, Regulatory Strategy, AC-EA SUBJECT: Environmental Checklist WVDP-20 12-0 1, " WVDP Reservoir Interconnecting Canal Maintenance Activities" REFERENCE: Letter WD:2012:0409 (357953), D. W. Coyne to R. W. Reffner, "CONTRACT NO. DE-EM000 1529, Section 5-3, Item 105, NEPA Documentation (Transmittal of Environmental Checklist WVDP-20 12-0 1, WVDP Reservoir Interconnecting Canal Maintenance Activities), Revision 1 ," dated July 24, 20 12 Dear Mr. Coyne:

326

A wellbore stability model for formations with anisotropic rock strengths  

Science Journals Connector (OSTI)

Shale formations, due to the presence of laminations and weak planes, exhibit directional strength characteristics. In most conventional wellbore stability analyses, rock formations are typically assumed to have isotropic strength. This may cause erroneous results in anisotropic formations such as shales which show strength variations with changing loading directions with respect to the plane of weakness. Therefore a more complex wellbore stability model is required. We have developed such a model in which the anisotropic rock strength characteristic is incorporated. Applying this model to two case studies shows that shear failures occur either along or across the bedding planes depending on the relative orientation between the wellbore trajectories and the bedding planes. Additionally, the extent of failure region around the wellbore and the safe mud weights are significantly affected by the wellbore orientation with respect to the directions of bedding plane and in-situ stress field.

Hikweon Lee; See Hong Ong; Mohammed Azeemuddin; Harvey Goodman

2012-01-01T23:59:59.000Z

327

WIPP air-intake shaft disturbed-rock zone study  

SciTech Connect (OSTI)

The disturbed-rock zone surrounding the air-intake shaft at the Waste Isolation Pilot Plant (WIPP) site was investigated to determine the extent and the permeability of the disturbed-rock zone as a function of radial distance from the 6.1 m diameter shaft, at different elevations within the Salado. Gas- and brine-permeability tests were performed in the bedded halite of the Salado formation at two levels within the air-intake shaft. The gas- and brine-permeability test results demonstrated that the radial distance to an undisturbed formation permeability of 1 {times} 10{sup {minus}21} m{sup 2} was less than 3.0 m.

Dale, T. [INTERA Inc., Austin, TX (United States); Hurtado, L.D. [Sandia National Labs., Albuquerque, NM (United States). Repository Isolation Systems Dept.

1996-12-01T23:59:59.000Z

328

Thermal stress on bottom hole rock of gas drilling  

Science Journals Connector (OSTI)

Gas drilling has higher penetration than mud drilling. The greatest reason for this phenomenon with gas is that the gas is greatly cooled by expansion as it passes through the bit and thereby cools the bottom of the hole. The thermal stress at bottom-hole occurs during this process. The concept of thermal crushing of rocks is analysed in this study. The theoretical methods are developed to analyse thermal stresses and fragmentation induced by cooling of rock. Then, the numerical computation is conducted for the thermal stress equations with the numerical result simulated for the temperature field at the bottom hole to explain the reason of high drilling rates in gas drilling. Furthermore, an experiment was conducted to verify the theory. Therefore, the theories and simulated results in this paper have a guiding signification for best understand the technique and possibly to extend its economic advantage still further. [Received: September 23, 2011; Accepted: November 20, 2011

Shunji Yang; Gonghui Liu; Jun Li

2012-01-01T23:59:59.000Z

329

North Little Rock, Arkansas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Little Rock, Arkansas: Energy Resources Little Rock, Arkansas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 34.769536°, -92.2670941° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.769536,"lon":-92.2670941,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

330

City of North Little Rock, Arkansas (Utility Company) | Open Energy  

Open Energy Info (EERE)

North Little Rock North Little Rock Place Arkansas Utility Id 13718 Utility Location Yes Ownership M NERC Location SERC NERC SERC Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png HPS- 100 Watt Lighting HPS- 1000 Watt (Floodlights) Lighting HPS- 150 Watt Lighting HPS- 250 Watt Lighting HPS- 250 Watt (Floodlights) Lighting HPS- 400 Watt (Floodlights) Lighting LCTOU Industrial LGS Industrial LPS Industrial MH- 1000 Watt (Floodlights) Lighting

331

Window Rock, Arizona: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rock, Arizona: Energy Resources Rock, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.680573°, -109.0525929° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.680573,"lon":-109.0525929,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

332

Ocean Bluff-Brant Rock, Massachusetts: Energy Resources | Open Energy  

Open Energy Info (EERE)

Bluff-Brant Rock, Massachusetts: Energy Resources Bluff-Brant Rock, Massachusetts: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 42.1080418°, -70.6633175° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.1080418,"lon":-70.6633175,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

333

McKees Rocks, Pennsylvania: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

McKees Rocks, Pennsylvania: Energy Resources McKees Rocks, Pennsylvania: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.4656244°, -80.0656106° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.4656244,"lon":-80.0656106,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

334

Rough Rock, Arizona: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Rock, Arizona: Energy Resources Rock, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 36.4072229°, -109.8728929° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.4072229,"lon":-109.8728929,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

335

Neutron Production from the Fracture of Piezoelectric Rocks  

E-Print Network [OSTI]

A theoretical explanation is provided for the experimental evidence that fracturing piezoelectric rocks produces neutrons. The elastic energy micro-crack production ultimately yields the macroscopic fracture. The mechanical energy is converted by the piezoelectric effect into electric field energy. The electric field energy decays via radio frequency (microwave) electric field oscillations. The radio frequency electric fields accelerate the condensed matter electrons which then collide with protons producing neutrons and neutrinos.

A. Widom; J. Swain; Y. N. Srivastava

2011-09-22T23:59:59.000Z

336

Comparison and analysis of reservoir rocks and related clays  

SciTech Connect (OSTI)

A series of instrumental and chemical analyses was made on sedimentary rocks to determine the surface chemical properties of sedimentry rocks and the physical characteristic of the pores. A scanning electron microscope (SEM) with energy dispersive X-ray analytic capability was used to study the morphology of the samples, surface mineral composition and type and location of clays, and to obtain a qualitative estimate of the pore sizes. A centrifuge was used to determine the pore size distributions which are correlated with SEM observations. An atomic absorption spectrophotometer equipped with an inductively coupled plasma for complete spectral analysis was used to obtain analyses of the rocks, clays, and effluents from ion exchange tests. Two of the results are as follows: (1) Sweetwater gas sands have a bimodal pore size distribution composed of pores with a mean diameter of 0.2 microns which is attributed to intergranular spaces and cracks in the expanded laborboratory sample but which will be close under the pressure of the overburden formations, and these Sweetwater sands have a distribution of pores at 2 microns which are solution vugs rather than intergranular porosity since the sand grains are completely packed together with the cementing material due to the high overburden pressures; and (2) Ion-exchange capacities of two rocks were 5.3 meq/kg and 18.0 meq/kg, and the surface areas were 0.9 m/sup 2//g and 2.30 m/sup 2//g, respectively, even though each had almost identical mineral composition, clay type and quantity, and permeability. 7 references, 12 figures, 3 tables.

Crocker, M.E.; Donaldson, E.C.; Marchin, L.M.

1983-10-01T23:59:59.000Z

337

Water-Rock interaction in the Long Valley Caldera (USA)  

Science Journals Connector (OSTI)

Water-rock interactions within the main thermal aquifer in the Long Valley Caldera are evaluated using water chemistry data from a new suite of samples. The results reflect the impact of increased geothermal production and major CO2 loss, which appears to drive calcite precipitation in the aquifer. The study provides qualitative information on the rates of mineral reactions and the response times of chemical geothermometers to declining temperatures.

W.C. Evans; S. Hurwitz; D. Bergfeld; J. Lewicki; M.A. Huebner; C.F. Williams; S.T. Brown

2013-01-01T23:59:59.000Z

338

Fluid-Rock Characterization and Interactions in NMR Well Logging  

SciTech Connect (OSTI)

The objective of this project was to characterize the fluid properties and fluid-rock interactions which are needed for formation evaluation by NMR well logging. NMR well logging is finding wide use in formation evaluation. The formation parameters commonly estimated were porosity, permeability, and capillary bound water. Special cases include estimation of oil viscosity, residual oil saturation, location of oil/water contact, and interpretation on whether the hydrocarbon is oil or gas.

Hirasaki, George J.; Mohanty, Kishore K.

2003-02-10T23:59:59.000Z

339

Deformation of underground deep cavities in rock salts at their long-term operations  

SciTech Connect (OSTI)

The underground deep cavities are created in rock salts of various morphological types with the purpose of storage of petroleum, gas and nuclear wastes. It is well known that the rock salt has rheological properties, which can result in closure of caverns and loss of their stability. In the evaporitic rocks, especially those containing halite, time-dependent deformation is pronounced even at comparatively low stress levels. At high stress levels this creep becomes a dominant feature of the mechanical behavior of salt rocks. So the knowledge of creep behavior of rock salt is of paramount importance in underground storage application of gas, petroleum products and nuclear wastes.

Zhuravleva, T.; Shafarenko, E. [Podzemgasprom, STC, Moscow (Russian Federation)

1995-12-01T23:59:59.000Z

340

RockPort Capital Partners (California) | Open Energy Information  

Open Energy Info (EERE)

RockPort Capital Partners (California) RockPort Capital Partners (California) Name RockPort Capital Partners (California) Address 3000 Sand Hill Road, Building 2, Suite 110 Place Menlo Park, California Zip 94025 Region Bay Area Product Venture capital firm that partners with cleantech entrepreneurs around the world Phone number (650) 854-9300 Website http://www.rockportcap.com/ Coordinates 37.4244767°, -122.1942422° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.4244767,"lon":-122.1942422,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

RockPort Capital Partners (Massachusetts) | Open Energy Information  

Open Energy Info (EERE)

RockPort Capital Partners (Massachusetts) RockPort Capital Partners (Massachusetts) Name RockPort Capital Partners (Massachusetts) Address 160 Federal Street, 18th Floor Place Boston, Massachusetts Zip 02110 Region Greater Boston Area Product Venture capital firm that partners with cleantech entrepreneurs around the world Phone number (617) 912-1420 Website http://www.rockportcap.com/ Coordinates 42.3537726°, -71.0562094° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.3537726,"lon":-71.0562094,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

342

Diagenesis in halite-cemented source rocks, Middle Devonian, Saskatchewan  

SciTech Connect (OSTI)

Porosity in Dawson Bay carbonates is halite plugged and the formation is sandwiched between thick units of bedded halite. The presence of displacive halite crystals within fine-grained carbonates (implying sediment plasticity during halite emplacement) and uncompacted organic-rich, carbonate-poor stromatolites indicate halite cementation occurred at an early stage. Also, halite cementation must have been completed prior to porosity loss in overlying bedded halites. By comparison with Holocene/Pleistocene bedded halites, this cementation occurred with only tens of meters of overburden. Early complete halite cementation should have converted Dawson Bay carbonates into virtually a closed system and greatly curtailed or inhibited organic-matter maturation within them Organic-rich carbonates occur immediately below Dawson Bay evaporites as rocks containing an anomalously abundant benthos (stromatoporoids, brachiopods) or as a more restricted facies, lacking megafossils or containing gastropods. Some restricted carbonates contain more than 2% extractable organic carbon. The n-alkane, pentacyclic triterpane, nonrearranged sterane and disterane distributions suggest two distinct populations of samples are present. Biomarker distributions are difficult to interpret in terms of estimating organic maturity because of source rock environmental factors (hypersalinity), but appear to be inconsistent with the geological prognosis that these source rocks would have been isolated early in their diagenesis. The problem of how kerogens can be altered in an apparently closed system has yet to be resolved.

Kendall, A.C. (Univ. of East Anglia, Norwich (England)); Abbott, G.D.; D'Elia, V.A.A. (Univ. of Newcastle upon Tyne (England))

1990-05-01T23:59:59.000Z

343

Advanced Characterization of Fractured Reservoirs in Carbonate Rocks: The Michigan Basin  

SciTech Connect (OSTI)

The purpose of the study was to collect and analyze existing data on the Michigan Basin for fracture patterns on scales ranging form thin section to basin. The data acquisition phase has been successfully concluded with the compilation of several large digital databases containing nearly all the existing information on formation tops, lithology and hydrocarbon production over the entire Michigan Basin. These databases represent the cumulative result of over 80 years of drilling and exploration.

Wood, James R.; Harrison, William B.

2002-12-02T23:59:59.000Z

344

Development of a rock mass characteristics model for TBM penetration rate prediction  

Science Journals Connector (OSTI)

The TBM tunneling process in hard rock is actually a rock or rock mass breakage process, which determines the efficiency of tunnel boring machine (TBM). On the basis of the rock breakage process, a rock mass conceptual model that identifies the effect of rock mass properties on TBM penetration rate is proposed. During the construction of T05 and T06 tunnels of DTSS project in Singapore, a comprehensive program was performed to obtain the relevant rock mass properties and TBM performance data. A database, including rock mass properties, TBM specifications and the corresponding TBM performance, was established. Combining the rock mass conceptual model for evaluating rock mass boreability with the established database, a statistical prediction model of TBM penetration rate is set up by performing a nonlinear regression analysis. The parametric studies of the new model showed that the rock uniaxial compressive strength and the volumetric joint count have predominantly effects on the penetration rate. These results showed good agreement with the numerical simulations. The model limitations were also discussed.

Q.M. Gong; J. Zhao

2009-01-01T23:59:59.000Z

345

DOE - Office of Legacy Management -- Slick Rock Mill Site - CO 08  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Slick Rock Mill Site - CO 08 Slick Rock Mill Site - CO 08 FUSRAP Considered Sites Site: Slick Rock Mill Site (CO.08) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: Also see Slick Rock, Colorado, Processing Site Documents Related to Slick Rock Mill Site 2012 Annual Site Inspection and Monitoring Report for Uranium Mill Tailings Radiation Control Act Title I Disposal Sites-Slick Rock, Colorado, Disposal Site. LMS/S09461. February 2013 Verification Monitoring Report for the Slick Rock, Colorado, Processing Sites, 2007 Update June 2008 Office of Legacy Management DOE M/1577 2008 - -L Work Performed Under DOE Contract No. for the U.S.

346

Environmental assessment of remedial action at the Slick Rock uranium mill tailings sites Slick Rock, Colorado. Draft  

SciTech Connect (OSTI)

The Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA) authorized the US Department of Energy (DOE) to clean up two uranium mill tailings processing sites near Slick Rock, Colorado, in San Miguel County. The purpose of the cleanup is to reduce the potential health effects associated with the radioactive materials remaining on the sites and on vicinity properties (VP) associated with the sites. The US Environmental Protection Agency (EPA) promulgated standards for the UMTRCA that contained measures to control the contaminated materials and to protect the groundwater from further degradation. Remedial actions at the Slick Rock sites must be performed in accordance with these standards and with the concurrence of the US Nuclear Regulatory Commission (NRC).

NONE

1993-06-01T23:59:59.000Z

347

Measurements of water vapor adsorption on the Geysers rocks  

SciTech Connect (OSTI)

The ORNL high temperature isopiestic apparatus was adapted for adsorption measurements. The quantity of water retained by rock samples taken from three different wells of The Geysers was measured at 150 °C and at 200 °C as a function of pressure in the range 0.00 ? p/p0 ? 0.98, where p0 is the saturated water vapor pressure. The rocks were crushed and sieved into three fractions of different grain sizes (with different specific surface areas). Both adsorption (increasing pressure) and desorption (decreasing pressure) runs were made in order to investigate the nature and extent of the hysteresis. Additionally, BET surface area analyses were performed by Porous Materials Inc. on the same rock samples using nitrogen or krypton adsorption measurements at 77 K. Specific surface areas and pore volumes were determined. These parameters are important in estimating water retention capability of a porous material. The same laboratory also determined the densities of the samples by helium pycnometry. Their results were then compared with our own density values obtained by measuring the effect of buoyancy in compressed argon. One of the goals of this project is to determine the dependence of the water retention capacity of the rocks as a function of temperature. The results show a significant dependence of the adsorption and desorption isotherms on the grain size of the sample. The increase in the amount of water retained with temperature observed previously (Shang et al., 1994a, 1994b, 1995) between 90 and 130°C for various reservoir rocks from The Geysers may be due to the contribution of slow chemical adsorption and may be dependent on the time allowed for equilibration. In contrast with the results of Shang et al. (1994a, 1994b, 1995), some closed and nearly closed hysteresis loops on the water adsorption/desorption isotherms (with closing points at p/p0 ? 0.6) were obtained in this study. In these cases the effects of activated processes were not present, and no increase in water adsorption with temperature was observed

Gruszkiewicz, Miroslaw S.; Horita, Juske; Simonson, John M.; Mesmer, Robert E.

1996-01-24T23:59:59.000Z

348

0022-3530/93 $3.00 Long-Term Evolution of Fluid-Rock Interactions in  

E-Print Network [OSTI]

in the evolving Sierra Nevada magmatic arc is preserved in metavolcanic rocks of the Ritter Range pendant oxygen isotopic values of the rocks of the lower section indicate that these rocks interacted extensively with coeval volcanic centers. Metavolcanic rocks of the upper section evidently interacted with meteoris

Barton, Mark D.

349

Source rock screening studies of Ordovician Maquoketa shale in western Illinois  

SciTech Connect (OSTI)

Rock-Eval (pyrolysis) studies of Ordovician Maquoketa Shale samples (cuttings and cores) from the shallow subsurface (500-800 ft deep) in western Illinois indicate that facies within the Maquoketa have potential as hydrocarbon source rocks. Dark, presumably organic-rich zones within the Maquoketa Shale were selected and analyzed for total organic carbon (TOC), Rock-Eval (pyrolysis), and bulk and clay mineralogy using x-ray diffraction. Preliminary results from six samples from Schuyler, McDonough, and Fulton Counties show TOC values ranging from 4.70% to as high as 12.90%. Rock-Eval parameters, measured by heating organic matter in an inert atmosphere, indicate source rock maturity and petroleum-generative potential. Screening studies, using the Rock-Eval process, describe very good source rock potential in facies of the Maquoketa Shale. Further studies at the Illinois State Geological Survey will expand on these preliminary results. This study complements a proposed exploration model in western Illinois and further suggests the possibility of source rocks on the flanks of the Illinois basin. Long-distance migration from more deeply buried effective source rocks in southern Illinois has been the traditional mechanism proposed for petroleum in basin-flank reservoirs. Localized source rocks can be an alternative to long-distance migration, and can expand the possibilities of basin-flank reservoirs, encouraging further exploration in these areas.

Autrey, A.; Crockett, J.E.; Dickerson, D.R.; Oltz, D.F.; Seyler, B.J.; Warren, R.

1987-09-01T23:59:59.000Z

350

A survey of natural radiation levels in soils and rocks from Aliaa-Foça region in Izmir, Turkey  

Science Journals Connector (OSTI)

......dose rate in air from cosmic...and use and fossil fuel combustion...metal of the pollution status of...samples were air-dried for...based on the solution of three linear...geochemistry and pollution studies of...fields in the air due to sources......

N. Füsun Çam; Ibrahim Özken; Günseli Yaprak

2013-07-01T23:59:59.000Z

351

Strength and static elastic moduli of Mesaverde rocks  

SciTech Connect (OSTI)

This report discusses the mechanical properties of Mesaverde rocks (shale and sandstone) from various depths in five wells in Colorado and Wyoming. The properties studied were tensile strength, compressive strength, hydrostatic compressibility, shear stress under strain-controlled compression, and static elastic moduli. With respect to these properties, the sandstones are virtually isotropic. The shales, on the other hand, are definitely anisotropic. The nature and degree of anisotropy of the shales vary with the depth of sample origin. The relative values of mechanical properties between the shale and the sandstone also vary with depth. 7 references, 17 figures, 8 tables.

Lin, W.

1985-03-01T23:59:59.000Z

352

Exergy analysis of a rock bed thermal storage system  

Science Journals Connector (OSTI)

In this paper, a thermodynamic procedure is presented to analyse energy and exergy balances of a rock bed thermal storage system. The thermal behaviour is described by means of a control volume that includes three subsystems: the solar collectors, the fluid distribution system and the storage chamber. Solar-to-thermal energy conversion was obtained by means of a solar collector at a fixed airflow rate. The final purpose of the method is to determine how well the thermodynamic modelling fits the real data obtained experimentally from the prototype under normal operating conditions.

J.J. Navarrete-Gonzalez; J.G. Cervantes-de Gortari; E. Torres-Reyes

2008-01-01T23:59:59.000Z

353

Energy Efficiency Upgrades for Little Rock Air Force Base  

SciTech Connect (OSTI)

Little Rock Air Force Base (LRAFB), in partnership with the local utility, Entergy Services, Inc., has reduced energy costs and used savings from investments in high-efficiency equipment to maintain and improve the condition of base housing and other facilities. Three projects were completed, with over $10 million invested. Major accomplishments include replacing air-to-air heat pumps with high-efficiency ground-source heat pumps (GSHPs) in more than 1,500 base housing units, lighting modifications to 10 buildings, upgrade of HVAC equipment in the base's enlisted club, and energy-efficient lighting retrofits for LRAFB's flight simulator.

Goldman, C.; Dunlap, M.A.

2000-11-13T23:59:59.000Z

354

Sulfur oxidation influence on rock phosphate solubilization in soil  

E-Print Network [OSTI]

The desirability of using rock phosphate (RP) as a phosphorus (P ) fertilizer in Brazil, as well in other parts of the world, has increased in recent years. This is due to increased prices of the energy required to transform ground RP into more soluble sources... of S on the solubilization of RP, 13X greater residual phosphorus availability when S was added to RP. Bromfield (1975) found that S mixed wi th togolese RP increased yield and that this mixture was as good as superphosphate for groundnuts. The use of elemental...

Correa de Souza, Osni

2012-06-07T23:59:59.000Z

355

Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma  

Open Energy Info (EERE)

Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Zeolitization Of Intracaldera Sediments And Rhyolitic Rocks In The 1.25 Ma Lake Of Valles Caldera, New Mexico, USA Details Activities (0) Areas (0) Regions (0) Abstract: Quantitative X-ray diffraction analysis of about 80 rhyolite and associated lacustrine rocks has characterized previously unrecognized zeolitic alteration throughout the Valles caldera resurgent dome. The alteration assemblage consists primarily of smectite-clinoptilolite-mordenite-silica, which replaces groundmass and fills voids, especially in the tuffs and lacustrine rocks. Original rock textures are routinely preserved. Mineralization typically extends to

356

Method and apparatus for determining two-phase flow in rock fracture  

DOE Patents [OSTI]

An improved method and apparatus as disclosed for measuring the permeability of multiple phases through a rock fracture. The improvement in the method comprises delivering the respective phases through manifolds to uniformly deliver and collect the respective phases to and from opposite edges of the rock fracture in a distributed manner across the edge of the fracture. The improved apparatus comprises first and second manifolds comprising bores extending within porous blocks parallel to the rock fracture for distributing and collecting the wetting phase to and from surfaces of the porous blocks, which respectively face the opposite edges of the rock fracture. The improved apparatus further comprises other manifolds in the form of plenums located adjacent the respective porous blocks for uniform delivery of the non-wetting phase to parallel grooves disposed on the respective surfaces of the porous blocks facing the opposite edges of the rock fracture and generally perpendicular to the rock fracture.

Persoff, Peter (Oakland, CA); Pruess, Karsten (Berkeley, CA); Myer, Larry (Benicia, CA)

1994-01-01T23:59:59.000Z

357

Uranium occurrence in igneous rocks of the central Davis Mountains, west Texas  

E-Print Network [OSTI]

is local? sv ized in fewer sites with higher concentrations than in fine-grained rocks. In glasses, uranium is homogeneously dis tributed. Crystalline rocks are uranium-depleted by as much as 30 percent in comparison to glasses of similar composition.... This suggests that uranium is lost during alteration because it is concentrated at grain boundaries in crystalline rocks, where it is accessible to altering solutions. Uranium depletion also occurs in air-fall tuffs because of their permeability. Alteration...

Schaftenaar, Wendy Elizabeth

2012-06-07T23:59:59.000Z

358

Black Rock I Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Rock I Geothermal Project Rock I Geothermal Project Project Location Information Coordinates The following coordinate was not recognized: 33°19'59" N, 115°50'3 W.The following coordinate was not recognized: 33°19'59" N, 115°50'3 W. Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.3705792,"lon":-115.77401,"alt":0,"address":"33\u00b019'59\" N, 115\u00b050'3 W","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

359

Black Rock II Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Black Rock II Geothermal Project Black Rock II Geothermal Project Project Location Information Coordinates The following coordinate was not recognized: 33°19'59" N, 115°50'3 W.The following coordinate was not recognized: 33°19'59" N, 115°50'3 W. Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.3705792,"lon":-115.77401,"alt":0,"address":"33\u00b019'59\" N, 115\u00b050'3 W","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

360

Micromachined low frequency rocking accelerometer with capacitive pickoff  

DOE Patents [OSTI]

A micro electro mechanical sensor that uses capacitive readout electronics. The sensor involves a micromachined low frequency rocking accelerometer with capacitive pickoff fabricated by deep reactive ion etching. The accelerometer includes a central silicon proof mass, is suspended by a thin polysilicon tether, and has a moving electrode (capacitor plate or interdigitated fingers) located at each end the proof mass. During movement (acceleration), the tethered mass moves relative to the surrounding packaging, for example, and this defection is measured capacitively by a plate capacitor or interdigitated finger capacitor, having the cooperating fixed electrode (capacitor plate or interdigitated fingers) positioned on the packaging, for example. The micromachined rocking accelerometer has a low frequency (<500 Hz), high sensitivity (.mu.G), with minimal power usage. The capacitors are connected to a power supply (battery) and to sensor interface electronics, which may include an analog to digital (A/D) converter, logic, RF communication link, antenna, etc. The sensor (accelerometer) may be, for example, packaged along with the interface electronics and a communication system in a 2".times.2".times.2" cube. The proof mass may be asymmetric or symmetric. Additional actuating capacitive plates may be used for feedback control which gives a greater dynamic range.

Lee, Abraham P. (Arlington, VA); Simon, Jonathon N. (San Leandro, CA); McConaghy, Charles F. (Livermore, CA)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Fluid-Rock Characterization and Interactions in NMR Well Logging  

SciTech Connect (OSTI)

The objective of this report is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity. Oil based drilling fluids can have an adverse effect on NMR well logging if it alters the wettability of the formation. The effect of various surfactants on wettability and surface relaxivity are evaluated for silica sand. The relation between the relaxation time and diffusivity distinguishes the response of brine, oil, and gas in a NMR well log. A new NMR pulse sequence in the presence of a field gradient and a new inversion technique enables the T{sub 2} and diffusivity distributions to be displayed as a two-dimensional map. The objectives of pore morphology and rock characterization are to identify vug connectivity by using X-ray CT scan, and to improve NMR permeability correlation. Improved estimation of permeability from NMR response is possible by using estimated tortuosity as a parameter to interpolate between two existing permeability models.

George J. Hirasaki; Kishore K. Mohanty

2005-09-05T23:59:59.000Z

362

ChemCam rock laser for Mars Science Laboratory "Curiosity"  

ScienceCinema (OSTI)

Los Alamos has a long history of space-related instruments, tied primarily to its role in defense-related treaty verification. Space-based detectors have helped determine the differences between signals from lightning bolts and potential nuclear explosions. LANL-developed gamma-ray detection instruments first revealed the existence of what we now know as gamma-ray bursts, an exciting area of astrophysical research. And the use of LANL instruments on varied space missions continues with such products as the ChemCam rock laser for NASA, shown here. The Engineering Model of the ChemCam Mars Science Laboratory rover instrument arrived at NASA's Jet Propulsion Laboratory on February 6, 2008. The Flight Model was shipped in August, 2010 for installation on the rover at JPL. ChemCam will use imaging and laser-induced breakdown spectroscopy (LIBS) to determine rock and soil compositions on Mars, up to 9 meters from the rover. The engineering model is being integrated into the rover test bed for the development and testing of the rover software. The actual flight model components were concurrently assembled at Los Alamos and in Toulouse, France. The Mars Science Laboratory is scheduled to launch in 2011. Animations courtesy of JPL/NASA.

Wiens, Roger

2014-08-12T23:59:59.000Z

363

Magnetic Anisotropy as an Aid to Identifying CRM and DRM in Red Sedimentary Rocks  

Science Journals Connector (OSTI)

To further evaluate the potential of magnetic anisotropy techniques for determining the origin of the natural remanent magnetization (NRM) in sedimentary rocks, several new remanence anisotropy measurement tec...

K.P. Kodama; M.J. Dekkers

2004-10-01T23:59:59.000Z

364

Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor...  

Open Energy Info (EERE)

Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated Hydrothermal System At The Geysers, Sonoma County, California Jump to: navigation, search GEOTHERMAL...

365

E-Print Network 3.0 - archaean sedimentary rocks Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the Archaean," the rocks are ... Source: Hamilton, Warren B. - Department of Geophysics, Colorado School of Mines Collection: Geosciences 87 Geologic Time Name...

366

E-Print Network 3.0 - assisted three-dimensional rock Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

are economically extractable tend to be concentrated in places where hot or even molten rock (magma) ... Source: Stanford University - Department of Energy Resources Engineering,...

367

Rock, Mineral, Coal, Oil, and Gas Resources on State Lands (Montana)  

Broader source: Energy.gov [DOE]

This chapter authorizes and regulates prospecting permits and mining leases for the exploration and development of rock, mineral, oil, coal, and gas resources on state lands.

368

A Coupled Model for Natural Convection and Condensation in Heated Subsurface Enclosures Embedded in Fractured Rock  

E-Print Network [OSTI]

and Mass Transfer in Yucca Mountain Drifts,” Proceedings ofMD- 000001 REV 00, Yucca Mountain Project Report, Bechtelthe fractured rock at Yucca Mountain have been investigated

Halecky, N.; Birkholzer, J.T.; Webb, S.W.; Peterson, P.F.; Bodvarsson, G.S.

2006-01-01T23:59:59.000Z

369

E-Print Network 3.0 - altered granitic rock Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

whereas Turgutlu rocks can be considered ... Source: UCLA, Ion Microprobe Facility Collection: Geosciences Page: << < 1 2 3 4 5 > >> Page: << < 1 2 3 4 5 > >> 41...

370

Experiment-Based Model for the Chemical Interactions between Geothermal Rocks, Supercritical Carbon Dioxide and Water  

Broader source: Energy.gov [DOE]

Experiment-Based Model for the Chemical Interactions between Geothermal Rocks, Supercritical Carbon Dioxide and Water presentation at the April 2013 peer review meeting held in Denver, Colorado.

371

EA-1987: Parker-Headgate Rock and Parker-Bouse Rebuild Project...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

the existing Parker Dam-Headgate Rock and Parker Dam-Bouse 161-kilovolt transmission lines along the Colorado River in western Arizona and eastern California. The project...

372

DESCRIPTION OF THE BAKKEN FORMATION’S ROCK PROPERTIES OF THE WILLISTON BASIN, NORTH DAKOTA.  

E-Print Network [OSTI]

??It is possible to determine rock properties by utilizing seismic inversion techniques. The inversion technique is the most frequently used, by which the seismic interpreters… (more)

Kocoglu, Sebnem 1983-

2013-01-01T23:59:59.000Z

373

E-Print Network 3.0 - acid rock discharges Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

dioxide from acidic brine. For a brine-rock ... Source: Heller, Paul - Department of Geology and Geophysics, University of Wyoming Collection: Geosciences 55 Chapter 1....

374

Bibliography of the geological and geophysical aspects of hot dry rock geothermal resources  

SciTech Connect (OSTI)

This is the first issue of an annual compilation of references that are useful to the exploration, understanding and development of the hot dry rock geothermal resource.

Heiken, G.; Sayer, S.

1980-02-01T23:59:59.000Z

375

Geochemistry of two pressurized brines from the Castile Formation in the vicinity of the Waste Isolation Pilot Plant (WIPP) site  

SciTech Connect (OSTI)

The major and minor element data and isotopic data from the ERDA-6 and WIPP-12 testing indicate that the brine reservoirs encountered in the Upper Castile Formation are largely in equilibrium with their surrounding host rock environment. This contention is supported by thermodynamic and stable isotope data. It is not possible to assign an absolute age to the brine based on uranium disequilibrium considerations, but the data do indicate that the brine reequilibrated with a new rock environment at least two million years ago. Information and data evaluated herein indicate the likelihood that the brines encountered are predominantly, if not entirely, derived from a trapped seawater source subsequently modified by diagenesis. Major ion/bromide ratios indicate that halite dissolution has occurred to some extent subsequent to deposition of the Castile anhydrites and entrapment of the seawater brine. Mechanisms for additional halite dissolution are discussed. Based on the degree of present halite saturation, it is concluded that the potential for future dissolution of halite is minimal.

Faith, S.; Spiegler, P.; Rehfeldt, K.R.

1983-04-01T23:59:59.000Z

376

Paradox of Peroxy Defects and Positive Holes in Rocks Part II: Outflow of Electric Currents from Stressed Rocks  

E-Print Network [OSTI]

Understanding the electrical properties of rocks is of fundamental interest. We report on currents generated when stresses are applied. Loading the center of gabbro tiles, 30x30x0.9 cm$^3$, across a 5 cm diameter piston, leads to positive currents flowing from the center to the unstressed edges. Changing the constant rate of loading over 5 orders of magnitude from 0.2 kPa/s to 20 MPa/s produces positive currents, which start to flow already at low stress levels, <5 MPa. The currents increase as long as stresses increase. At constant load they flow for hours, days, even weeks and months, slowly decreasing with time. When stresses are removed, they rapidly disappear but can be made to reappear upon reloading. These currents are consistent with the stress-activation of peroxy defects, such as O$_3$Si-OO-SiO$_3$, in the matrix of rock-forming minerals. The peroxy break-up leads to positive holes h$^{\\bullet}$, i.e. electronic states associated with O$^-$ in a matrix of O$^{2-}$, plus electrons, e'. Propagating...

Scoville, John; Freund, Friedemann

2015-01-01T23:59:59.000Z

377

Magnetic susceptibility of volcanic rocks in geothermal areas: application potential in geothermal exploration studies for identification of rocks and zones of hydrothermal alteration  

Science Journals Connector (OSTI)

Magnetic susceptibility and petrographic studies of drilled rock cuttings from two geothermal wells (Az-26 and Az-49) of the important electricity-generating geothermal system, Los Azufres, Mexico, were carried o...

Kailasa Pandarinath; Rajasekhariah Shankar…

2014-07-01T23:59:59.000Z

378

USING RECENT ADVANCES IN 2D SEISMIC TECHNOLOGY AND SURFACE GEOCHEMISTRY TO ECONOMICALLY REDEVELOP A SHALLOW SHELF CARBONATE RESERVOIR: VERNON FIELD, ISABELLA COUNTY, MI  

SciTech Connect (OSTI)

One of the main objectives of this demonstration project is to test surface geochemical techniques for detecting trace amounts of light hydrocarbons in pore gases as a means of reducing risk in hydrocarbon exploration and production. As part of the project, several field demonstrations were undertaken to assess the validity and usefulness of the microbial surface geochemical technique. The important observations from each of these field demonstrations are briefly reviewed in this annual report. These demonstrations have been successful in identifying the presence or lack of hydrocarbons in the subsurface and can be summarized as follows: (1) The surface geochemistry data showed a fair-to-good microbial anomaly that may indicate the presence of a fault or stratigraphic facies change across the drilling path of the State Springdale & O'Driscoll No.16-16 horizontal demonstration well in Manistee County, Michigan. The well was put on production in December 2003. To date, the well is flowing nearly 100 barrels of liquid hydrocarbons per day plus gas, which is a good well in Michigan. Reserves have not been established yet. Two successful follow-up horizontal wells have also been drilled in the Springdale area. Additional geochemistry data will be collected in the Springdale area in 2004. (2) The surface geochemistry sampling in the Bear Lake demonstration site in Manistee County, Michigan was updated after the prospect was confirmed and production begun; the original subsurface and seismic interpretation used to guide the location of the geochemical survey for the Charlich Fauble re-entry was different than the interpretation used by the operator who ultimately drilled the well. As expected, the anomaly appears to be diminishing as the positive (apical) microbial anomaly is replaced by a negative (edge) anomaly, probably due to the pressure draw-down in the reservoir. (3) The geochemical sampling program over the Vernon Field, Isabella County, Michigan is now interpreted as a large negative anomaly associated with the entire field. The results of the State Smock horizontal well and the Bowers 4-25 well confirmed the lack of additional recoverable hydrocarbons in the Vernon Field. (4) The surface geochemistry data showed a strong anomaly in the Myrtle Beach, Burke County, North Dakota area that would justify drilling by itself and even more so in conjunction with the structural interpretation from the geological and geophysical data; the microbial values here were the highest we have observed. The Myrtle Beach geochemical survey indicated a good to excellent prospect which was confirmed by drilling, however, a pipeline has not yet been completed that would allow the wells to be placed into production. We also present in this annual report the results of recent efforts to map carbonate facies tracts in the middle Devonian Dundee and Rogers City Limestones using gamma ray, bulk density, and photoelectric effect geophysical well log amplitudes. This work was undertaken to identify fairways for exploration in the Dundee and Rogers City where surface geochemical techniques could then be used to screen potential leads.

James R. Wood; A. Wylie; W. Quinlan

2004-04-01T23:59:59.000Z

379

USING RECENT ADVANCES IN 2D SEISMIC TECHNOLOGY AND SURFACE GEOCHEMISTRY TO ECONOMICALLY REDEVELOP A SHALLOW SHELF CARBONATE RESERVOIR: VERNON FIELD, ISABELLA COUNTY, MI.  

SciTech Connect (OSTI)

In this reporting period, we extended the fault study to include more faults and developed new techniques to visualize the faults. We now have used data from the Dundee Formation to document 11 major faults in the Michigan Basin and are in the process of reviewing data from other horizons. These faults appear to control the locations of many of the large anticlinal structures in the Michigan Basin and likely controlled fluid movements as well. The surface geochemistry program is also moving along well with emphasis on measuring samples collected last sampling season. The new laboratory is now functional and has been fully staffed as of December. The annual project review has been set for March 7-9 in Tampa, Florida. Contracts are being prepared for drilling the Bower's prospects in Isabella County, Michigan, this spring or summer.

James R. Wood; T.J. Bornhorst; S.D. Chittick; William B. Harrison; W. Quinlan

2002-01-01T23:59:59.000Z

380

City of Rock Falls, Illinois (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Illinois (Utility Company) Illinois (Utility Company) Jump to: navigation, search Name City of Rock Falls Place Illinois Utility Id 16198 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Economic Development Rate Rider Irrigation System: Off-Peak Rider Commercial Rate C (Commercial) Commercial Rate GS: municipal and governmental entities Commercial Rate GS: other than municipal or governmental entities Commercial Rate R (Residential) Residential

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Hydrologic test system for fracture flow studies in crystalline rock  

SciTech Connect (OSTI)

A hydrologic test system has been designed to measure the intrinsic permeabilities of individual fractures in crystalline rock. This system is used to conduct constant pressure-declining flow rate and pressure pulse hydraulic tests. The system is composed of four distinct units: (1) the Packer System, (2) Injection system, (3) Collection System, and (4) Electronic Data Acquisition System. The apparatus is built in modules so it can be easily transported and re-assembled. It is also designed to operate over a wide range of pressures (0 to 300 psig) and flow rates (0.2 to 1.0 gal/min). This system has proved extremely effective and versatile in its use at the Climax Facility, Nevada Test Site.

Raber, E; Lord, D.; Burklund, P.

1982-05-05T23:59:59.000Z

382

Seismic-Scale Rock Physics of Methane Hydrate  

SciTech Connect (OSTI)

We quantify natural methane hydrate reservoirs by generating synthetic seismic traces and comparing them to real seismic data: if the synthetic matches the observed data, then the reservoir properties and conditions used in synthetic modeling might be the same as the actual, in-situ reservoir conditions. This approach is model-based: it uses rock physics equations that link the porosity and mineralogy of the host sediment, pressure, and hydrate saturation, and the resulting elastic-wave velocity and density. One result of such seismic forward modeling is a catalogue of seismic reflections of methane hydrate which can serve as a field guide to hydrate identification from real seismic data. We verify this approach using field data from known hydrate deposits.

Amos Nur

2009-01-08T23:59:59.000Z

383

Saturated Zone Plumes in Volcanic Rock: Implications for Yucca Mountain  

SciTech Connect (OSTI)

This paper presents a literature survey of the occurrences of radionuclide plumes in saturated, fractured rocks. Three sites, Idaho National laboratory, Hanford, and Oak Ridge are discussed in detail. Results of a modeling study are also presented showing that the length to width ratio of a plume starting within the repository footprint at the Yucca Mountain Project site, decreases from about 20:1 for the base case to about 4:1 for a higher value of transverse dispersivity, indicating enhanced lateral spreading of the plume. Due to the definition of regulatory requirements, this lateral spreading does not directly impact breakthrough curves at the 18 km compliance boundary, however it increases the potential that a plume will encounter reducing conditions, thus significantly retarding the transport of sorbing radionuclides.

S. Kelkar; R. Roback; B. Robinson; G. Srinivasan; C. Jones; P. Reimus

2006-02-14T23:59:59.000Z

384

Predicting the transport properties of sedimentary rocks from microgeometry  

SciTech Connect (OSTI)

We investigate through analysis and experiment how pore geometry, topology, and the physics and chemistry of mineral-fluid and fluid-fluid interactions affect the flow of fluids through consolidated/partially consolidated porous media. Our approach is to measure fluid permeability and electrical conductivity of rock samples using single and multiple fluid phases that can be frozen in place (wetting and nonwetting) over a range of pore pressures. These experiments are analyzed in terms of the microphysics and microchemistry of the processes involved to provide a theoretical basis for the macroscopic constitutive relationships between fluid-flow and geophysical properties that we develop. The purpose of these experiments and their analyses is to advance the understanding of the mechanisms and factors that control fluid transport in porous media. This understanding is important in characterizing porous media properties and heterogeneities before simulating and monitoring the progress of complex flow processes at the field scale in permeable media.

Schlueter, E.M.

1993-01-01T23:59:59.000Z

385

Predicting the transport properties of sedimentary rocks from microgeometry  

SciTech Connect (OSTI)

The author investigates through analysis and experiment how pore geometry, topology, and the physics and chemistry of mineral-fluid and fluid-fluid interactions affect the flow of fluids through consolidated/partially consolidated porous media. The approach is to measure fluid permeability and electrical conductivity of rock samples using single and multiple fluid phases that can be frozen in place (wetting and nonwetting) over a range of pore pressures. These experiments are analyzed in terms of the microphysics and microchemistry of the processes involved to provide a theoretical basis for the macroscopic constitutive relationships between fluid-flow and geophysical properties that the authors develop. The purpose of these experiments and their analyses is to advance the understanding of the mechanisms and factors that control fluid transport in porous media. This understanding is important in characterizing porous media properties and heterogeneities before simulating and monitoring the progress of complex flow processes at the field scale in permeable media.

Schlueter, E.M.

1995-02-01T23:59:59.000Z

386

/sup 10/Be profiles in lunar surface rock 68815  

SciTech Connect (OSTI)

Cosmic ray produced /sup 10/Be (t/sub 1/2/ = 1.6 x 10/sup 6/ years) activities have been measured in fourteen carefully ground samples of lunar surface rock 68815. The /sup 10/Be profiles from 0 to 4 mm are nearly flat for all three surface angles measured and show a very slight increase with depth from the surface to a depth of 1.5 cm. These depth profiles are in contrast to the SCR (solar cosmic ray) produced /sup 26/Al and /sup 53/Mn profiles measured from these same samples. There is no sign of SCR produced /sup 10/Be in this rock. The discrepancy between the data and the Reedy-Arnold theoretical calculation (about 2 dpm /sup 10/Be/kg at the surface) can be explained in two ways: (1) the low energy proton induced cross sections for /sup 10/Be production from oxygen are really lower than those used in the calculations or, (2) compared to the reported fits for /sup 26/Al and /sup 53/Mn, the solar proton spectral shape is actually softer (exponential rigidity parameter Ro less than 100 MV), the omnidirectional flux above 10 MeV is higher (more than 70 protons/cm/sup 2/ s), and the erosion rate is higher (greater than 1.3 mm/My). /sup 10/Be, as a high energy product, is a very useful nuclide for helping to obtain the SCR spectral shape in the past. 23 refs., 3 figs., 1 tab.

Nishiizumi, K.; Imamura, M.; Kohl, C.P.; Nagai, H.; Kobayashi, K.; Yoshida, K.; Yamashita, H.; Reedy, R.C.; Honda, M.; Arnold, J.R.

1987-01-01T23:59:59.000Z

387

The UK geothermal hot dry rock R&D programme  

SciTech Connect (OSTI)

The UK hot dry rock research and development programme is funded by the Department of Energy and aims to demonstrate the feasibility of commercial exploitation of HDR in the UK. The philosophy of the UK programme has been to proceed to a full-scale prototype HDR power station via a number of stages: Phase 1--Experiments at shallow depth (300 m) to assess the feasibility of enhancing the permeability of the rock. Phase 2--Studies at intermediate depth (2500 m) to determine the feasibility of creating a viable HDR subsurface heat exchanger. Phase 3--Establishment of an HDR prototype at commercial depth. The programme has run over a 15 year period, and has been formally reviewed at stages throughout its progress. The 1987 review towards the end of Phase 2 identified a number of technical objectives for continuing research and proposed that the initial design stage of the deep HDR prototype should start. Phase 3A is now complete. It addressed: the feasibility of creating an underground HDR heat exchanger suitable for commercial operation; techniques for improving hydraulic performance and correcting short circuits in HDR systems; modeling of the performance, resource size and economic aspects of HDR systems. The work has been conducted by a number of contractors, including Cambome School of Mines, Sunderland and Sheffield City Polytechnics and RTZ Consultants Limited. This paper focuses upon the experimental work at Rosemanowes in Cornwall and the recently completed conceptual design of a prototype HDR power station. The economics of HDR-generated electricity are also discussed and the conclusions of a 1990 program review are presented. Details of the HDR program to 1994, as announced by the UK Department of Energy in February 1991, are included.

MacDonald, Paul; Stedman, Ann; Symons, Geoff

1992-01-01T23:59:59.000Z

388

Hot Dry Rock energy annual report fiscal year 1992  

SciTech Connect (OSTI)

Hot Dry Rock technology took a giant leap forward this year as the long-awaited long-term flow test (LTFT) of the Phase II HDR reservoir at Fenton Hill got underway. Energy was produced on a twenty-four hour a day basis for a continuous period of nearly four months of steady-state testing. Hot water was brought to the surface at 90-100 gallons per minute (gpm) with temperatures of 180[degrees]C (356[degrees]F) and higher. During that time, the HDR plant achieved an on-line record of 98.8%. Surface temperature measurements and temperature logging deep within the wellbore confirmed that no decline in the average temperature of fluid produced from the reservoir occurred. Tracer experiments indicated that flow paths within the reservoir were undergoing continuous change during the test. Remarkably, it appeared that longer flow paths carried a larger proportion of the flow as the test proceeded, while more direct fluid pathways disappeared or carried a significantly reduced flow. In sum, access to hot rock appeared to improve over the span of the test. Water losses during the test averaged 10-12% and showed a slow long-term decline. These results confirmed what had been previously discovered in static pressurization testing: Water consumption declines significantly during extended operation of an HDR reservoir. In combination with a recent demonstration by the Japanese that water losses can be greatly reduced by the proper placement of multiple production wells, the recent results at Fenton Hill have effectively demonstrated that excessive water consumption should not be an issue for a properly engineered HDR facility at a well chosen site.

Duchane, D.V.; Winchester, W.W.

1993-04-01T23:59:59.000Z

389

Next stages in HDR technology development. [Hot Dry Rock (HDR)  

SciTech Connect (OSTI)

Twenty years of research and development have brought HDR heat mining technology from the purely conceptual stage to the establishment of an engineering-scale heat mine at Fenton Hill, NM. In April 1992, a long-term flow test (LTFT) of the HDR reservoir at Fenton Hill was begun. The test was carried out under steady-state conditions on a continuous basis for four months, but a major equipment failure in late July forced a temporary suspension of operations. Even this short test provided valuable information and extremely encouraging results as summarized below: There was no indication of thermal drawdown of the reservoir. There was evidence of increasing access to hot rock with time. Water consumption was in the rangki of 10--12%. Measured pumping costs were $0.003 per kilowatt of energy produced. Temperature logs conducted in the reservoir production zone during and after the flow test confirmed the fact that there was no decline in the average temperature of the fluid being produced from the reservoir. In fact, tracer testing showed that the fluid was taking more indirect pathways and thus contacting a greater amount of hot rock as the test progressed. Water usage quickly dropped to a level of 10--15 gallons per minute, an amount equivalent to about 10--12% of the injected fluid volume. At a conversion rate of 10--15%, these would translate to effective fuel costs'' of 2--3[cents] per kilowatt hour of electricity production potential. The completion of the LTFT will set the stage for commercialization of HDR but will not bring HDR technology to maturity. Relatively samples extensions of the current technology may bring significant improvements in efficiency, and these should be rapidly investigated. In the longer run, advanced operational concepts could further improve the efficiency of HDR energy extraction and may even offer the possibility of cogeneration schemes which solve both energy and water problems throughout the world.

Duchane, D.V.

1993-01-01T23:59:59.000Z

390

The Palaeomagnetism of Late Cenozoic Volcanic Rocks from Kenya and Tanzania  

Science Journals Connector (OSTI)

......Cenozoic Volcanic Rocks from Kenya and Tanzania T. A. Reilly P. K. S. Raja A. E...from the volcanic province of northern Tanzania, Nature Phys. Sci., 229, 19-20...Cenozoic Volcanic Rocks from Kenya and Tanzania T .A. Reilly Geological Survey of Ireland......

T. A. Reilly; P. K. S. Raja; A. E. Mussett; A. Brock

1976-06-01T23:59:59.000Z

391

The Palaeomagnetism of Late Cenozoic Volcanic Rocks from Kenya and Tanzania  

Science Journals Connector (OSTI)

......Cenozoic Volcanic Rocks from Kenya and Tanzania T. A. Reilly P. K. S. Raja A. E...from the volcanic province of northern Tanzania, Nature Phys. Sci., 229, 19-20...Cenozoic Volcanic Rocks from Kenya and Tanzania T. A. Reilly Geological Survey of Ireland......

T. A. Reilly; P. K. S. Raja; A. E. Mussett; A. Brock

1958-12-01T23:59:59.000Z

392

Petford, N. and McCaffrey, K.J.W. (Eds). Hydrocarbons in Crystalline Rocks.:  

Science Journals Connector (OSTI)

...igneous or crystalline basement rocks. Nick Petfords excellent paper examines the controls...igneous or crystalline basement rocks. Nick Petford's excellent paper examines the...can be properly understood. G. M. GADD Merritt, J.W., Auton, C.A., Connell...

C. D. Clerk

393

Episodic Rifting of Phanerozoic Rocks in the Victoria Land Basin, Western Ross Sea, Antarctica  

Science Journals Connector (OSTI)

...Geological Survey multichannel seismic-reflection tracklines, and location of seismic line 407 (Fig. 2). 1085 the axis tow art iions of naginatic rocks. The faultsap-pear to cut sedimentary rocks near the seafloor and to show an increasing dis-Olacement...

ALAN K. COOPER; F. J. DAVEY

1985-09-13T23:59:59.000Z

394

URTeC 1620617 Thermal Shock in Reservoir Rock Enhances the Hydraulic  

E-Print Network [OSTI]

by 20%. Introduction: Thermal fracturing Injection of cold fluids into reservoir rock, induces thermalURTeC 1620617 Thermal Shock in Reservoir Rock Enhances the Hydraulic Fracturing of Gas Shales Saeid of any part of this paper without the written consent of URTeC is prohibited. Summary Thermal shock

Patzek, Tadeusz W.

395

NITROGEN REMOVAL FOR ON-SITE SEWAGE DISPOSAL: A RECIRCULATING SAND FILTER/ROCK TANK DESIGN  

E-Print Network [OSTI]

NITROGEN REMOVAL FOR ON-SITE SEWAGE DISPOSAL: A RECIRCULATING SAND FILTER/ROCK TANK DESIGN, C. G. McKiel ABSTRACT: The nitrogen removal abilities of recirculating sand filter/rock tank (RSF) systems and conventional septic tank/soil absorption trench systems were compared in a field laboratory

Gold, Art

396

Documenting Visual Quality Controls on the Evaluation of Petroleum Reservoir-rocks through  

E-Print Network [OSTI]

) processes control the distribution of porosity and permeability within petroleum reservoir rocks section in a time unit. The values and distribution of porosity and permeability within reservoir rocks and prediction of the quality (porosity, permeability) of petroleum reservoirs during their exploration

Oliveira, Manuel M.

397

Quantification and Prediction of the 3D Pore Network Evolution in Carbonate Reservoir Rocks  

E-Print Network [OSTI]

Quantification and Prediction of the 3D Pore Network Evolution in Carbonate Reservoir Rocks E. DeD Pore Network Evolution in Carbonate Reservoir Rocks -- This study presents an integrated approach that allows the reconstruction and prediction of 3D pore structure modifications and porosity/permeability

Boyer, Edmond

398

Eric Moulton, Ferri Hassani, Pejman Nekoovaght Microwave-Assisted Heating in Rock  

E-Print Network [OSTI]

Eric Moulton, Ferri Hassani, Pejman Nekoovaght Microwave-Assisted Heating in Rock INTRODUCTION to expensive replacements. Expansive heating through microwaves breaks up the rock, which reduces the stress the mechanisms and parameters governing the heating rate of a material. Department of Mining and Materials

Barthelat, Francois

399

Making sense of Chalk: a total-rock approach to its Engineering Geology  

Science Journals Connector (OSTI)

...drive (330). In the north portal area the fracturing is more...post-construction rock fall at the north portal in 1994 smashed the brick...when little traffic and no pedestrians were around. A smaller rock fall at the southern portal resulted in chalk blocks...

R. N. Mortimore

400

Can Rock-Eval pyrolysis assess the biogeochemical composition of organic matter during peatification?  

E-Print Network [OSTI]

as a screening tool to investigate soil organic matter (SOM) chemistry and vulnerability. In order to test the validity of Rock-Eval as an indicator of SOM chemistry and of OM transformations, we compared classical Rock-Eval-derived parameters (Total Organic Carbon - TOC, Hydrogen Index - HI and Oxygen Index - OI

Boyer, Edmond

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Final Report: Geothermal Dual Acoustic Tool for Measurement of Rock Stress  

SciTech Connect (OSTI)

This paper outlines the technology need for a rock formation stress measurement in future EGS wells. This paper reports on the results of work undertaken under a Phase I, DOE/SBIR on the feasibility to build an acoustic well logging tool for measuring rock formation stress.

Normann, Randy A.

2014-12-01T23:59:59.000Z

402

Using LIDAR in Highway Rock Cuts Norbert H. Maerz, Ph. D., P. Eng,  

E-Print Network [OSTI]

the data needed to begin the process of modeling the rock raveling process. INTRODUCTION LIDAR damage, injury, and even death. Highways impeded by even small spills of rock material by blasting techniques to facilitate the highway construction. A constant danger to the motoring public

Maerz, Norbert H.

403

Who are Climbing the Walls? An Exploration of the Social World of Indoor Rock Climbing  

E-Print Network [OSTI]

and attention has been focused on completing my study. I would like to thank the rock climbing community at Texas A&M for being so welcoming and for being willing to open up their community and share themselves with the leisure studies world. They have... ................................................................................. 39 Serious Leisure .................................................................... 44 Indoor Rock Climbing Social World ? The Climbing Community...

Kurten, Jason Henry

2011-02-22T23:59:59.000Z

404

Rock glacier surface motion in Beacon Valley, Antarctica, from synthetic-aperture radar interferometry  

E-Print Network [OSTI]

al., 1998]. [5] Although subsurface ice in Beacon Valley has long been known [Linkletter et al., 1973Rock glacier surface motion in Beacon Valley, Antarctica, from synthetic-aperture radar of rock glaciers in the Beacon Valley sector of the McMurdo Dry Valleys, in East Antarctica, as part

Fountain, Andrew G.

405

IMA Preprints Series (2002) Micro-and macro-scopic models of rock fracture  

E-Print Network [OSTI]

IMA Preprints Series (2002) Micro- and macro-scopic models of rock fracture Donald L. Turcotte to some earthquakes. Key words: rock mechanics, damage, fracture, critical point, power-law scaling, self involve a sin- gle fracture propagating through an homogeneous solid. However, this is an idealized case

406

IMA Preprints Series (2002) Micro and macroscopic models of rock fracture  

E-Print Network [OSTI]

IMA Preprints Series (2002) Micro­ and macro­scopic models of rock fracture Donald L. Turcotte to some earthquakes. Key words: rock mechanics, damage, fracture, critical point, power­law scaling, self involve a sin­ gle fracture propagating through an homogeneous solid. However, this is an idealized case

407

THE CONVERSION OF BIOMASS TO ETHANOL USING GEOTHERMAL ENERGY DERIVED FROM HOT DRY ROCK  

E-Print Network [OSTI]

97505 THE CONVERSION OF BIOMASS TO ETHANOL USING GEOTHERMAL ENERGY DERIVED FROM HOT DRY ROCK between a hot dry rock (HDR) geothermal energy source and the power requirements for the conversion of biomass to fuel ethanol is considerable. In addition, combining these two renewable energy resources

408

IntroductIon The range-restricted Rock Firefinch Lagonosticta sangui  

E-Print Network [OSTI]

conservation importance within the Jos Plateau Forest-Grassland Mosaic eco-region, Nigeria. Typical of the Jos Plateau landscape are rocky outcrops and isolated, sparsely vegetated granitic hills of rounded bare rock of the habitat associations and population density of the Rock Firefinch have centered on the Amurum Forest

de Villiers, Marienne

409

Scale dependence of sorption coefficients for contaminant transport in saturated fractured rock  

E-Print Network [OSTI]

Scale dependence of sorption coefficients for contaminant transport in saturated fractured rock. In this paper, we have developed a scaling methodology to upscale matrix sorption coefficients for fractured for upscaling the sorption coefficients in a saturated, fractured rock system. The derived upscaling equations

Lu, Zhiming

410

RIS-M-2260 HEAT GRADIENT INDUCED MIGRATION OF BRINE INCLUSIONS IN ROCK SALT  

E-Print Network [OSTI]

;#12;- 5 - 1. INTRODUCTION The storage of heat producing radioactive waste in rock salt, will produce of the brine migration under influence of the decreasing heat production in the waste. A general expressionRISÃ?-M-2260 HEAT GRADIENT INDUCED MIGRATION OF BRINE INCLUSIONS IN ROCK SALT Mathematical treatment

411

EXPERIMENTAL VERIFICATION OF THE LOAD-FOLLOWING POTENTIAL OF A HOT DRY ROCK GEOTHERMAL RESERVOIR  

E-Print Network [OSTI]

was about 2 minutes. INTRODUCTION The Hot Dry Rock (HDR) geothermal reservoir at Fenton Hill, New MexicoEXPERIMENTAL VERIFICATION OF THE LOAD-FOLLOWING POTENTIAL OF A HOT DRY ROCK GEOTHERMAL RESERVOIR Mexico 87545 ABSTRACT A recent 6-day flow experiment conducted at the Los Alamos National Laboratory

412

Geochemical characteristics and correlation of oil and nonmarine source rocks from Mongolia  

Science Journals Connector (OSTI)

...rocks and petroleum systems of...northwest China: AAPG Bulletin...All-Union Export and Import, 291-p...Marine and Petroleum Geol-ogy...rocks and petroleum systems of...northwest China: AAPG Bulletin...All-Union Export and Import, 291 p...

Cari L. Johnson; Todd J. Greene; David A. Zinniker; J. Michael Moldowan; Marc S. Hendrix; Alan R. Carroll

413

BENEFITS OF LIVING IN A BUILDING: BIG BROWN BATS (EPTESICUS FUSCUS) IN ROCKS VERSUS BUILDINGS  

E-Print Network [OSTI]

BENEFITS OF LIVING IN A BUILDING: BIG BROWN BATS (EPTESICUS FUSCUS) IN ROCKS VERSUS BUILDINGS CORI) roosting in natural and building roosts in the prairies of southeastern Alberta. During pregnancy, bats roosting in buildings used torpor less frequently than did rock- roosting bats, but achieved lower body

Barclay, Robert

414

Gordon Research Conferences  

Science Journals Connector (OSTI)

...materials"; T. A. Hewett, "Rock alteration by convective motions...thermal-hydraulic-mechanical pheonomena in fractured rocks"; Alan Weiser, "Reservoir simulation on an ar-bitrary...Geochemistry of crude oils and source rocks in Oman"; W. K. Seifert...

Alexander M. Cruickshank

1984-03-02T23:59:59.000Z

415

2010 DOE National Science Bowl® Photos - Little Rock Central High School  

Office of Science (SC) Website

Little Rock Central High School Little Rock Central High School National Science Bowl® (NSB) NSB Home About National Science Bowl Contacts Regional Science Bowl Coordinators National Science Bowl FAQ's Alumni Past National Science Bowl Winners Past National Science Bowl Photos National Science Bowl Logos High School Middle School Attending National Event Volunteers 2013 Competition Results News Media WDTS Home Contact Information National Science Bowl® U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: 202-586-6702 E: National.Science.Bowl@science.doe.gov 2010 National Science Bowl Photos 2010 DOE National Science Bowl® Photos - Little Rock Central High School Print Text Size: A A A RSS Feeds FeedbackShare Page Little Rock Central High School students from Little Rock, AR tour the

416

Candidate Sites For Future Hot Dry Rock Development In The United States |  

Open Energy Info (EERE)

Candidate Sites For Future Hot Dry Rock Development In The United States Candidate Sites For Future Hot Dry Rock Development In The United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Candidate Sites For Future Hot Dry Rock Development In The United States Details Activities (8) Areas (4) Regions (0) Abstract: Generalized geologic and other data are tabulated for 24 potential hot dry rock (HDR) sites in the contiguous United States. The data show that HDR resources occur in many geologic and tectonic settings. Potential reservoir rocks at each prospect are described and each system is categorized according to inferred heat sources. The Fenton Hill area in New Mexico is discussed in detail because this region may be considered ideal for HDR development. Three other prospectively valuable localities are

417

An estimation of the penetration rate of rotary drills using the Specific Rock Mass Drillability index  

Science Journals Connector (OSTI)

The main purpose of the present study was to provide a practical, convenient drillability prediction model based on rock mass characteristics, geological sampling from blast holes, and drill operational factors. Empirical equations that predict drill penetration rate have been developed using statistical analyses of data from the Sarcheshmeh Copper Mine. Seven parameters of the rock or rock mass, including uniaxial compressive strength (UCS) of the rock, Schmidt hammer hardness value, quartz content, fragment size (d80), alteration, and joint dip, are included in the model along with two operational parameters of the rotary drill, bit rotational speed and thrust. These parameters were used to predict values of the newly developed Specific Rock Mass Drillability (SRMD) index. Comparing measured SRMD values to those predicted by the multi-parameter linear, or nonlinear, regression models showed good agreement. The correlation coefficients were 0.82 and 0.81, respectively.

Alireza Cheniany; Khoshrou Seyed Hasan; Kourosh Shahriar; Jafar Khademi Hamidi

2012-01-01T23:59:59.000Z

418

Organic solvent alteration of hydraulic properties of sedimentary rocks of low permeability: a review  

SciTech Connect (OSTI)

A review of the current literature on hydrophysical interactions of organic solutes with sedimentary rocks of low permeability is presented. The motivation was the premise that low permeability rocks may act as secondary (aquifer) barriers for the containment of hazardous organic wastes, thus preventing these wastes from contaminating the groundwater. However, this premise may be incorrect if organic wastes can affect the hydraulic conductivity of these rocks. The results indicate that very little work has been done concerning interactions of organics with consolidated subsurface materials. Available information on three related topics was summarized: the effect of organic compounds on the hydrophysical properties of clays, case studies concerning the interactions of organic compounds with clays and sedimentary rocks, and the effect of shales on inorganic transport. These studies give an indication of some research areas that need to be explored with regard to the effect of organic compounds on the hydrophysical properties of sedimentary rocks; these research needs are briefly summarized. 42 refs.

Sklarew, D.S.

1985-05-01T23:59:59.000Z

419

Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated  

Open Energy Info (EERE)

Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated Hydrothermal System At The Geysers, Sonoma County, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Stable-Isotope Studies Of Rocks And Secondary Minerals In A Vapor-Dominated Hydrothermal System At The Geysers, Sonoma County, California Details Activities (5) Areas (1) Regions (0) Abstract: The Geysers, a vapor-dominated hydrothermal system, is developed in host rock of the Franciscan Formation, which contains veins of quartz and calcite whose Δ18O values record the temperatures and isotopic compositions of fluids prevailing during at least two different episodes of rock-fluid interaction. The first episode took place at about 200°C, during which marine silica and carbonate apparently interacted with ocean

420

Influence of Penetration Rate and Indenter Diameter in Strength Measurement by Indentation Testing on Small Rock Specimens  

Science Journals Connector (OSTI)

...Indentation testing has been developed as an unconventional method to determine intact rock strength using small rock specimens within the size of drill cuttings. In previous investigations involving indentati...

Mohammad Haftani; Bahman Bohloli; Alireza Nouri…

2014-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Mitochondrial Phylogeography of Rock-Dwelling Cichlid Fishes Reveals Evolutionary Influence of Historical Lake Level Fluctuations of Lake Tanganyika, Africa  

Science Journals Connector (OSTI)

...of Rock-Dwelling Cichlid Fishes Reveals Evolutionary Influence...intermittent lake basins. Seismic data indicate that extreme...of rock-dwelling cichlid fishes reveals evolutionary influence...intermittent lake basins. Seismic data indicate that extreme...

1996-01-01T23:59:59.000Z

422

Petroleum geochemistry of Texas and Oklahoma oils along the Marathon—Ouachita fold-thrust belt, south-central U.S.A.  

Science Journals Connector (OSTI)

The Marathon uplifit of west Texas and the Ouachita Mountains of Oklahoma and Arkansas comprise the surface expressions of a Paleozoic orogenic belt extending across the south-central U.S.A. A century of petroleum exploration in the Marathons and Ouachitas has yielded several oil discoveries. In this study, detailed molecular, elemental and isotopic data are presented for 9 Texas oils, 5 Oklahoma oils and 4 Oklahoma solid bitumens, all associated with thrust belt rocks of west Texas and southeast Oklahoma. Oil-oil correlations are proposed, and the character of the organic matter in the source rock(s) is inferred from knowledge of the oil chemistry. At least 16 of the 18 Marathon-Ouachita fold-thrust belt oils/solid bitumens originate from the same (or very similar) organic facies, despite a geographic separation along the fold-thrust belt of > 700 mi (? 1125 km). Many of the chemical differences in these samples derive from secondary effects, including biodegradation (e.g., solid bitumens) and differing levels of thermal maturity. The occurrence of unusual chemical compounds (e.g., 25,28,30-trisnorhopane) in some samples indicates the presence of anaerobic bacteria in isolated locales during deposition. Isotopic variability, when interpreted in light of near-constant molecular composition in the oils and an extensive period of early Paleozoic “starved trough” source-rock deposition, implies that these oils originate from rocks of similar organic facies, with source-rock ages ranging from Devonian through Ordovician. Previous literature suggests either a Devonian or an Ordovician source for these oils; molecular and isotopic data of the present study do not allow a distinction to be made. These results, when interpreted in terms of depositional patterns during early Paleozoic time, suggest that oil source rocks and the Marathon-Ouachita fold-thrust belt oil type may be present in the subsurface of central and east-central Texas.

Joseph A. Curiale

1992-01-01T23:59:59.000Z

423

European Association of Geochemistry  

Science Journals Connector (OSTI)

...the Ha y-Lacroix Prize rewarded the PhD work of Aur lie Violette and Johan Villeneuve (see Elements, volume 7, number 4...its vibrational spectra Jakub Matusik, Eva Scholtzov , and Daniel Tunega Clay mineralogy of the Zhada sediments: Evidence for...

424

Medical Mineralogy and Geochemistry:  

Science Journals Connector (OSTI)

...nanoparticles generated by new nanotechnologies has recently been strongly...Journal of Industrial Medicine 44: 291-297 Donaldson...Radical Biology and Medicine 34: 1507-1516 Fubini...Occupational Environmental Medicine 64: 616-625 Hetland...Safe handling of nanotechnology. Nature 444: 267-269...

Bice Fubini; Ivana Fenoglio

425

Environmental Inorganic Geochemistry Group  

E-Print Network [OSTI]

and innovative testing and is able to characterise waste and provide a comprehensive picture of current, offering avoidance and remediation strategies. http://geology.curtin.edu.au/research/eigg/eigg.cfm Curtin discussion 1430 Control and remediation 1500 Afternoon break 1530 Chemical time bombs 1600 Summary

Tobar, Michael

426

European Association of Geochemistry  

Science Journals Connector (OSTI)

...copper-silicate gels, an ana- logue compound for natural chrysocolla Tsuyoshi HARIU, Hiroshi ARIMA, and Kazumasa SUGIYAMA Talmessite from the Uriya deposit at the Kiura mining area, Oita Prefecture, Japan Masayuki OHNISHI, Norimasa SHIMOBAYASHI, Shigetomo...

427

RADIOACTIVE WASTE STORAGE IN MINED CAVERNS IN CRYSTALLINE ROCK-RESULTS OF FIELD INVESTIGATIONS AT STRIPA, SWEDEN  

E-Print Network [OSTI]

Waste Storage in Mined Caverns—Program Summary. LawrenceWASTE STORAGE IN MINED CAVERNS IN CRYSTALLINE ROCK- BESULTS

Witherspoon, P.A.

2010-01-01T23:59:59.000Z

428

Numerical studies of fluid-rock interactions in Enhanced Geothermal Systems (EGS) with CO2 as working fluid  

E-Print Network [OSTI]

2006), “The Future of Geothermal Energy Impact of Enhanced2000), “A Hot Dry Rock Geothermal Energy Concept Utilizing

Xu, Tianfu; Pruess, Karsten; Apps, John

2008-01-01T23:59:59.000Z

429

Evaluation of Used Fuel Disposition in Clay-Bearing Rock  

SciTech Connect (OSTI)

Radioactive waste disposal in shale/argillite rock formations has been widely considered given its desirable isolation properties (low permeability), geochemically reduced conditions, anomalous groundwater pressures, and widespread geologic occurrence. Clay/shale rock formations are characterized by their high content of clay minerals such as smectites and illites where diffusive transport and chemisorption phenomena predominate. These, in addition to low permeability, are key attributes of shale to impede radionuclide mobility. Shale host-media has been comprehensively studied in international nuclear waste repository programs as part of underground research laboratories (URLs) programs in Switzerland, France, Belgium, and Japan. These investigations, in some cases a decade or more long, have produced a large but fundamental body of information spanning from site characterization data (geological, hydrogeological, geochemical, geomechanical) to controlled experiments on the engineered barrier system (EBS) (barrier clay and seals materials). Evaluation of nuclear waste disposal in shale formations in the USA was conducted in the late 70’s and mid 80’s. Most of these studies evaluated the potential for shale to host a nuclear waste repository but not at the programmatic level of URLs in international repository programs. This report covers various R&D work and capabilities relevant to disposal of heat-generating nuclear waste in shale/argillite media. Integration and cross-fertilization of these capabilities will be utilized in the development and implementation of the shale/argillite reference case planned for FY15. Disposal R&D activities under the UFDC in the past few years have produced state-of-the-art modeling capabilities for coupled Thermal-Hydrological-Mechanical-Chemical (THMC), used fuel degradation (source term), and thermodynamic modeling and database development to evaluate generic disposal concepts. The THMC models have been developed for shale repository leveraging in large part on the information garnered in URLs and laboratory data to test and demonstrate model prediction capability and to accurately represent behavior of the EBS and the natural (barrier) system (NS). In addition, experimental work to improve our understanding of clay barrier interactions and TM couplings at high temperatures are key to evaluate thermal effects as a result of relatively high heat loads from waste and the extent of sacrificial zones in the EBS. To assess the latter, experiments and modeling approaches have provided important information on the stability and fate of barrier materials under high heat loads. This information is central to the assessment of thermal limits and the implementation of the reference case when constraining EBS properties and the repository layout (e.g., waste package and drift spacing). This report is comprised of various parts, each one describing various R&D activities applicable to shale/argillite media. For example, progress made on modeling and experimental approaches to analyze physical and chemical interactions affecting clay in the EBS, NS, and used nuclear fuel (source term) in support of R&D objectives. It also describes the development of a reference case for shale/argillite media. The accomplishments of these activities are summarized as follows: ? Development of a reference case for shale/argillite; ? Investigation of Reactive Transport and Coupled THM Processes in EBS: FY14; ? Update on Experimental Activities on Buffer/Backfill Interactions at elevated Pressure and Temperature; ? Thermodynamic Database Development: Evaluation Strategy, Modeling Tools, First-Principles Modeling of Clay, and Sorption Database Assessment; ? ANL Mixed Potential Model For Used Fuel Degradation: Application to Argillite and Crystalline Rock Environments.

Carlos F. Jové Colón; Philippe F. Weck; David H. Sassani; Liange Zheng; Jonny Rutqvist; Carl I. Steefel; Kunhwi Kim; Seiji Nakagawa; James Houseworth; Jens Birkholzer; Florie A. Caporuscio; Michael Cheshire; Michael S. Rearick; Mary K. McCarney; Mavrik Zavarin; Ana Benedicto; Annie B. Kersting; Mark Sutton; James Jerden; Kurt E. Frey; Jacqueline M. Copple; William Ebert

2014-08-29T23:59:59.000Z

430

Fracture and Healing of Rock Salt Related to Salt Caverns  

SciTech Connect (OSTI)

In recent years, serious investigations of potential extension of the useful life of older caverns or of the use of abandoned caverns for waste disposal have been of interest to the technical community. All of the potential applications depend upon understanding the reamer in which older caverns and sealing systems can fail. Such an understanding will require a more detailed knowledge of the fracture of salt than has been necessary to date. Fortunately, the knowledge of the fracture and healing of salt has made significant advances in the last decade, and is in a position to yield meaningful insights to older cavern behavior. In particular, micromechanical mechanisms of fracture and the concept of a fracture mechanism map have been essential guides, as has the utilization of continuum damage mechanics. The Multimechanism Deformation Coupled Fracture (MDCF) model, which is summarized extensively in this work was developed specifically to treat both the creep and fracture of salt, and was later extended to incorporate the fracture healing process known to occur in rock salt. Fracture in salt is based on the formation and evolution of microfractures, which may take the form of wing tip cracks, either in the body or the boundary of the grain. This type of crack deforms under shear to produce a strain, and furthermore, the opening of the wing cracks produce volume strain or dilatancy. In the presence of a confining pressure, microcrack formation may be suppressed, as is often the case for triaxial compression tests or natural underground stress situations. However, if the confining pressure is insufficient to suppress fracture, then the fractures will evolve with time to give the characteristic tertiary creep response. Two first order kinetics processes, closure of cracks and healing of cracks, control the healing process. Significantly, volume strain produced by microfractures may lead to changes in the permeability of the salt, which can become a major concern in cavern sealing and operation. The MDCF model is used in three simulations of field experiments in which indirect measures were obtained of the generation of damage. The results of the simulations help to verify the model and suggest that the model captures the correct fracture behavior of rock salt. The model is used in this work to estimate the generation and location of damage around a cylindrical storage cavern. The results are interesting because stress conditions around the cylindrical cavern do not lead to large amounts of damage. Moreover, the damage is such that general failure can not readily occur, nor does the extent of the damage suggest possible increased permeation when the surrounding salt is impermeable.

Chan, K.S.; Fossum, A.F.; Munson, D.E.

1999-03-01T23:59:59.000Z

431

A model for the development of a lobate alpine rock glacier in southwest Colorado, USA: implications for water on Mars  

E-Print Network [OSTI]

...................................................................................... 56 Water Discharge Characteristics ..................................................... 61 Closing Remarks ............................................................................ 64 III GPR SURVEY OF A LOBATE ROCK GLACIER IN YANKEE BOY BASIN, CO..................................................................................... 160 Engineering Aspects: Rock Glacier Geomorphology .................... 160 Model Based on Yankee Boy Rock Glacier .................................. 162 A Surrogate for Landforms on Mars ............................................. 162 Convergence...

Degenhardt, John Jerome

2004-09-30T23:59:59.000Z

432

SEISMIC MONITORING APPLIED TO MINES SAFETY AND OPTIMAL DESIGN OF MINE LAYOUTS IN HARD ROCK MASS SITATIONS  

E-Print Network [OSTI]

of dynamic rock fäilures ranging from surrounding audi- ble rock noises to large scale failure phenom- ena äs induced stress changes are a basic parameter of large scale disruptions in the rock mass, and this happens to be especially the case in tabular mining. The openings and large voids created by the mining operations cause

Boyer, Edmond

433

Finite Element Solution of Nonlinear Transient Rock Damage with Application in Geomechanics of Oil and Gas Reservoirs  

E-Print Network [OSTI]

the geomechanics of oil and gas reservoirs. The fragile microstructure of some rocks makes it difficult to predict of Steel, Aluminum, Concrete, etc. Moreover, the pattern of rock damage in oil and gas reservoirsFinite Element Solution of Nonlinear Transient Rock Damage with Application in Geomechanics of Oil

Patzek, Tadeusz W.

434

Rock mass modification around a nuclear waste repository in welded tuff  

SciTech Connect (OSTI)

This report presents the results of numerical analyses to estimate the extent of rock mass modification resulting from the presence of a High Level Waste (HLW) repository. Changes in rock mass considered are stresses and joint deformations resulting from disposal room excavation and thermal efffects induced by the heat generated by nuclear waste. rock properties and site conditions are taken from the Site Characterization Plan Conceptual Design Report for the potential repository site at Yucca Mountain, Nevada. Analyses were conducted using boundary element and distinct element methods. Room-scale models and repository-scale models were investigated for up to 500 years after waste emplacement. Results of room-scale analyses based on the thermoelastic boundary element model indicate that a zone of modified rock develops around the disposal rooms for both vertical and horizontal waste emplacement. This zone is estimated to extend a distance of roughly two room diameters from the room surface. Results from the repository-scale model, which are based on the thermoelastic boundary element model and the distinct element model, indicate a zone with modified rock mass properties starting approximately 100 m above and below the repository, with a thickness of approximately 200 m above and 150 m below the repository. Slip-prone subhorizontal features are shown to have a substantial effect on rock mass response. The estimates of rock mass modification reflect uncertainties and simplifying assumptions in the models. 32 refs., 57 figs., 1 tab.

Mack, M.G.; Brandshaug, T.; Brady, B.H.

1989-08-01T23:59:59.000Z

435

Rock mass response ahead of an advancing face in faulted shale  

Science Journals Connector (OSTI)

In this study, the rock mass response ahead of an advancing test tunnel in the Opalinus Clay at the Mont Terri Rock Laboratory (Switzerland) was investigated. Characterisation of the excavation-induced damage zone at Mont Terri is a challenging task due to the anisotropic and heterogeneous nature of the shale: pronounced bedding leads to intact rock anisotropy and prevalent small-scale tectonic shears lead to rock mass heterogeneity. Rock mass damage ahead of an experimental tunnel or niche was characterised through single-hole seismic wave velocity logging, borehole digital optical televiewer imaging, and geological drillcore mapping. Three-dimensional elastic stress analyses were completed and showed that rock mass degradation can be correlated to changes in the maximum to minimum principal stress ratio (i.e., spalling limit). Numerical results showed that close to the niche boundary, unloading lowers stress ratios, which correspond with decreasing seismic wave amplitudes and velocities; thus, indicating that strength degradation resulted from increasing crack-induced damage. Considerations of tectonic shears and distance from a previously stressed volume of rock were necessary in understanding both the damage state and extent ahead of the face. By integrating field and numerical data, the investigation showed that geological structures (i.e., bedding and bedding-parallel tectonic shears) were most influential near the entrance but played a lesser role as the niche deepened. Additionally, a portion of the niche is located in the perturbed zone of the intersecting Gallery04.

Salina Yong; Peter K. Kaiser; Simon Loew

2013-01-01T23:59:59.000Z

436

The thermal conductivity of rock under hydrothermal conditions: measurements and applications  

SciTech Connect (OSTI)

The thermal conductivities of most major rock-forming minerals vary with both temperature and confining pressure, leading to substantial changes in the thermal properties of some rocks at the high temperatures characteristic of geothermal systems. In areas with large geothermal gradients, the successful use of near-surface heat flow measurements to predict temperatures at depth depends upon accurate corrections for varying thermal conductivity. Previous measurements of the thermal conductivity of dry rock samples as a function of temperature were inadequate for porous rocks and susceptible to thermal cracking effects in nonporous rocks. We have developed an instrument for measuring the thermal conductivity of water-saturated rocks at temperatures from 20 to 350 °C and confining pressures up to 100 MPa. A transient line-source of heat is applied through a needle probe centered within the rock sample, which in turn is enclosed within a heated pressure vessel with independent controls on pore and confining pressure. Application of this technique to samples of Franciscan graywacke from The Geysers reveals a significant change in thermal conductivity with temperature. At reservoir-equivalent temperatures of 250 °C, the conductivity of the graywacke decreases by approximately 25% relative to the room temperature value. Where heat flow is constant with depth within the caprock overlying the reservoir, this reduction in conductivity with temperature leads to a corresponding increase in the geothermal gradient. Consequently, reservoir temperature are encountered at depths significantly shallower than those predicted by assuming a constant temperature gradient with depth. We have derived general equations for estimating the thermal conductivity of most metamorphic and igneous rocks and some sedimentary rocks at elevated temperature from knowledge of the room temperature thermal conductivity. Application of these equations to geothermal exploration should improve estimates of subsurface temperatures derived from heat flow measurements.

Williams, Colin F.; Sass, John H.

1996-01-24T23:59:59.000Z

437

Inversion of Scattered Waves for Material Properties in Fractured Rock  

SciTech Connect (OSTI)

The authors apply a recently developed low-frequency, non-linear inversion method which includes near and far field terms to a crosshole data set to determine the bulk and shear modulus, as well as the density for a fractured zone in a granitic rock mass. The method uses the scattered elastic wavefield which is extracted from the recorded data before the inversion is performed. The inversion result is appraised by investigating the resolution and standard deviation of the model estimates. The sensitivity of the three parameters to different features of the medium is revealed. While the bulk modulus appears to be sensitive to voids and welded contacts, the density is mostly affected by fractured zones. The shear modulus is least constrained due to the absence of S wave anisotropy information. It is shown that the three medium parameters are generally sensitive to other medium features than those determined by velocity inversions. Thus this method is viewed as a complimentary approach to travel time tomography which provides more insight into the material properties of inhomogeneous media.

Gritto, Roland; Korneev, Valeri A.; Johnson, Lane R.

1999-07-01T23:59:59.000Z

438

Source rock, maturity data indicate potential off Namibia  

SciTech Connect (OSTI)

Namibia`s territorial waters occupy a large portion of West Africa`s continental shelf. The area to the 1,000 m isobath is comparable in size to the combined offshore areas of Gabon, Congo, Zaire, and Angola. Around half as much again lies in 1,000--2,500 m of water. The whole unlicensed part of this area will be open for bidding when the Third Licensing Round starts Oct. 1, 1998. Offshore Namibia is underexplored by drilling with only seven exploration wells drilled. Shell`s Kudu field represents a considerable gas resource with reserves of around 3 tcf and is presently the only commercial discovery.Namibia`s offshore area holds enormous exploration potential. Good quality sandstone reservoirs are likely to be distributed widely, and a number of prospective structural and stratigraphic traps have been identified. The recognition of Cretaceous marine oil-prone source rocks combined with the results of new thermal history reconstruction and maturity modeling studies are particularly significant in assessment of the oil potential. The paper discusses resource development and structures, oil source potential, maturity, and hydrocarbon generation.

Bray, R.; Lawrence, S. [Exploration Consultants Ltd., Henley-on-Thames (United Kingdom); Swart, R. [National Petroleum Corp. of Namibia Pty. Ltd., Windhoek (Namibia)

1998-08-10T23:59:59.000Z

439

Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area (Ito &  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area (Ito & Tanaka, 1995) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Valles Caldera - Sulphur Springs Area (Ito & Tanaka, 1995) Exploration Activity Details Location Valles Caldera - Sulphur Springs Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness not indicated DOE-funding Unknown References Hisatoshi Ito, Kazuhiro Tanaka (1995) Insights On The Thermal History Of The Valles Caldera, New Mexico- Evidence From Zircon

440

The Effect of Rock Phosphate Upon the Corn Possibility of Phosphoric Acid of the Soil  

E-Print Network [OSTI]

of Veterinary Medicine, A. and M. College of Texas. **In cooperation with United Statee Department of Agriculture. THE EFFECT OF ROCK PHOSPHATE UPON THE CORN POS- SIBILITY OF PHOSPHORIC ACID OF THE SOIL. In connection vith oil-fertilit~ stuclies..., it is important to lcnow the relation between the effect of the phosphoric acid of the rock phosphate on crops and the phosphoric acid that can be withdrawn from the soil by crops. The phosphoric acid of rock phosphate is readily soluble in K/5 nitric acid...

Fraps, G. S. (George Stronach)

1922-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Hydrological and water quality characteristics of three rock glaciers: Blanca Massif, Colorado, USA  

E-Print Network [OSTI]

interstitially or as discrete lenses. The geometry of a rock glacier is conducive not only to the formation and growth of ice, but also to the entrapment of water in the fluid state. It is the ice and the trapped water that are important in providing a source... sediments, and ice. The ice occurs in rock glaciers either interstitially or as discrete lenses. The geometry of a rock glacier is conducive not only to the formation and growth of ice, but also to the entrapment of water in the fluid state. It is the ice...

DeMorett, Joseph Lawrence

2012-06-07T23:59:59.000Z

442

Geology Of The Fenton Hill, New Mexico, Hot Dry Rock Site | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Geology Of The Fenton Hill, New Mexico, Hot Dry Rock Site Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geology Of The Fenton Hill, New Mexico, Hot Dry Rock Site Details Activities (4) Areas (1) Regions (0) Abstract: The Phase I prototype hot dry rock (HDR) geothermal system was developed in Precambrian basement rocks at Fenton Hill, New Mexico. Core and cuttings samples from the four deep wells indicate that the reservoir of this Phase I HDR system lies within a homogeneous biotite granodiorite body of very low permeability. Natural fractures, although present, are

443

Alteration Patterns In Volcanic Rocks Within An East-West Traverse Through  

Open Energy Info (EERE)

Patterns In Volcanic Rocks Within An East-West Traverse Through Patterns In Volcanic Rocks Within An East-West Traverse Through Central Nicaragua Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Alteration Patterns In Volcanic Rocks Within An East-West Traverse Through Central Nicaragua Details Activities (0) Areas (0) Regions (0) Abstract: The volcanic rocks investigated in a cross-section between the Pacific and Atlantic coasts of Nicaragua - with the exception of Recent and some Pleistocene lavas - are incipiently to strongly altered. Alteration patterns on different scales can be discerned in the Tertiary sequences: (i) a regional burial diagenesis or very low-grade burial metamorphism at the low-temperature end of the zeolite facies (mordenite subfacies) with an inferred thermal gradient of < 50°C/km, grading into (ii) a geothermal

444

NETL: News Release - DOE Transfers Steel Casting Technology to Rock Island  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

31, 2007 31, 2007 DOE Transfers Steel Casting Technology to Rock Island Arsenal Army Facility to Produce Improved Armor in War on Terrorism WASHINGTON, DC - A steel casting technology developed by the U.S. Department of Energy has been transferred to the U.S. Army's Rock Island Arsenal to manufacture improved armor for vehicles used in the global war on terrorism. MORE INFO Learn more about NETL's cooperative research with the Army The Office of Fossil Energy's National Energy Technology Laboratory (NETL) provided the Rock Island Arsenal with process guidelines, parameters, expertise, and patterns to set up and operate a facility for making steel castings using an NETL-developed process called loose-bonded sand, lost-foam technology. The facilities at the arsenal, in Rock Island, Ill.,

445

Rock Sampling At San Juan Volcanic Field Area (Larson & Jr, 1986) | Open  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Rock Sampling At San Juan Volcanic Field Area (Larson & Jr, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At San Juan Volcanic Field Area (Larson & Jr, 1986) Exploration Activity Details Location San Juan Volcanic Field Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes More than 300 samples were collected from within and adjacent to the Lake City caldera. All specimens consist of single hand samples, approximately 1 kg in size. Care was taken to avoid oxidized or weathered rocks. Twenty

446

Establishment of Stress-Permeabilty relationship of fractured rock mass by numerical modeling  

Office of Scientific and Technical Information (OSTI)

Accepted for publication in International Journal of Rock Mechanics & Mining Sciences Accepted for publication in International Journal of Rock Mechanics & Mining Sciences Stress-Dependent Permeability of Fractured Rock Masses: A Numerical Study Ki-Bok Min *1 , J Rutqvist 2 , Chin-Fu Tsang 2 , and Lanru Jing 1 1 Engineering Geology and Geophysics Research Group, Royal Institute of Technology (KTH), Stockholm, Sweden 2 Earth Sciences Division, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA, USA * corresponding author. Tel.: +46-8-790-7919; fax: +46-8-790-6810. E-mail address: kibok@kth.se (Ki-Bok Min) 1 Abstract We investigate the stress-dependent permeability issue in fractured rock masses considering the effects of nonlinear normal deformation and shear dilation of fractures using a two-dimensional

447

NREL: News Feature - Solar Cells Light Up Prison Cells on 'The Rock'  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solar Cells Light Up Prison Cells on 'The Rock' Solar Cells Light Up Prison Cells on 'The Rock' July 23, 2012 This photo shows an island in the middle of blue sea water, with industrial buildings taking up a good deal of the island. The 1,300 solar panels on the Cellhouse building are a dark blue. Enlarge image Alcatraz Island in San Francisco Bay is referred to as "The Rock" and was home to a notorious prison for 75 years. NREL recently helped the National Park Service and the DOE Federal Energy Management Program transform the island's electricity source from diesel fuel to photovoltaic panels on the rooftop of the Cellhouse building. Courtesy of the National Park Service "Machine Gun Kelly," Al Capone, the "Birdman" - Alcatraz prison has had some infamous residents on the craggy island known as "The Rock" in the

448

Hot Dry Rock Geothermal Reservoir Testing- 1978 To 1980 | Open Energy  

Open Energy Info (EERE)

Dry Rock Geothermal Reservoir Testing- 1978 To 1980 Dry Rock Geothermal Reservoir Testing- 1978 To 1980 Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hot Dry Rock Geothermal Reservoir Testing- 1978 To 1980 Details Activities (3) Areas (1) Regions (0) Abstract: The Phase I Hot Dry Rock Geothermal Energy reservoirs at the Fenton Hill field site grew continuously during Run Segments 2 through 5 (January 1978 to December 1980). Reservoir growth was caused not only by pressurization and hydraulic fracturing, but also by heat-extraction and thermal-contraction effects. Reservoir heat-transfer area grew from 8000 to 50,000 m2 and reservoir fracture volume grew from 11 to 266 m3. Despite this reservoir growth, the water loss rate increased only 30%, under similar pressure environments. For comparable temperature and pressure

449

Geochemical Data on Waters, Gases, Scales, and Rocks from the Dixie Valley  

Open Energy Info (EERE)

Geochemical Data on Waters, Gases, Scales, and Rocks from the Dixie Valley Geochemical Data on Waters, Gases, Scales, and Rocks from the Dixie Valley Region, Nevada (1996-1999) Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geochemical Data on Waters, Gases, Scales, and Rocks from the Dixie Valley Region, Nevada (1996-1999) Abstract This report tabulates an extensive geochemical database on waters, gases, scales,rocks, and hot-spring deposits from the Dixie Valley region, Nevada. The samples fromwhich the data were obtained were collected and analyzed during 1996 to 1999. Thesedata provide useful information for ongoing and future investigations on geothermalenergy, volcanism, ore deposits, environmental issues, and groundwater quality in thisregion. Authors Los Alamos National Laboratory and NM Published

450

Isotopic Analysis- Rock At Long Valley Caldera Area (Smith & Suemnicht,  

Open Energy Info (EERE)

Isotopic Analysis- Rock At Long Valley Caldera Area (Smith & Suemnicht, Isotopic Analysis- Rock At Long Valley Caldera Area (Smith & Suemnicht, 1991) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Long Valley Caldera Area (Smith & Suemnicht, 1991) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness useful DOE-funding Unknown Notes This oxygen isotope and fluid inclusion study has allowed us to determine the pathways of fluid circulation, set limits on the thermal regime, and link the source of the heat to prolonged volcanic activity. At shallow depths in the caldera References Brian M. Smith, Gene A. Suemnicht (1991) Oxygen Isotope Evidence For Past And Present Hydrothermal Regimes Of Long Valley Caldera, California

451

Rock Sampling At Zuni Mountains Nm Area (Brookins, 1982) | Open Energy  

Open Energy Info (EERE)

Zuni Mountains Nm Area (Brookins, 1982) Zuni Mountains Nm Area (Brookins, 1982) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At Zuni Mountains Nm Area (Brookins, 1982) Exploration Activity Details Location Zuni Mountains Nm Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Radiogenic heat production analysis from U,Th,K concentrations. References D. G. Brookins (1982) Potassium, Uranium, Thorium Radiogenic Heat Contribution To Heat Flow In The Precambrian And Younger Silicic Rocks Of The Zuni And Florida Mountains, New Mexico (Usa) Retrieved from "http://en.openei.org/w/index.php?title=Rock_Sampling_At_Zuni_Mountains_Nm_Area_(Brookins,_1982)&oldid=387056" Category: Exploration Activities

452

EA-1897: AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon |  

Broader source: Energy.gov (indexed) [DOE]

7: AltaRock's Newberry Volcano EGS Demonstration near Bend, 7: AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon EA-1897: AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon Summary This EA evaluates the environmental impacts of a proposal to create an Enhanced Geothermal Systems (EGS) Demonstration Project involving new technology, techniques, and advanced monitoring protocols for the purpose of testing the feasibility and viability of EGS for renewable energy production. BLM is the lead agency for this EA and DOE is a cooperating agency. Public Comment Opportunities No public comment opportunities available at this time. Documents Available for Download April 5, 2012 EA-1897: Finding of No Significant Impact AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon April 5, 2012 EA-1897: Final Environmental Assessment

453

The hydroelectric problem of porous rocks: thermodynamic approach and introduction of a percolation threshold  

Science Journals Connector (OSTI)

......research-article Research Notes The hydroelectric problem of porous rocks: thermodynamic...layer. In this note, I take the hydroelectric problem back to its thermodynamic roots by showing how the hydroelectric equations can be derived from the......

André Revil

2002-12-01T23:59:59.000Z

454

Influence of Rock Types on Seismic Monitoring of CO2 Sequestration in Carbonate Reservoirs  

E-Print Network [OSTI]

) techniques such as high pressure CO2 injection may normally be required to recover oil in place in carbonate reservoirs. This study addresses how different rock types can influence the seismic monitoring of CO2 sequestration in carbonates. This research...

Mammadova, Elnara

2012-10-19T23:59:59.000Z

455

On244Pu in lunar rocks from Fra Mauro and implications regarding their origin  

Science Journals Connector (OSTI)

The evidence forin situ produced fission xenon from244Pu in rock 14321 is presented. The inferred abundance ratio244Pu/238U is found to be consistent with values observed in a meteorite. Data from a stepwise rele...

K. Marti; B. D. Lightner; G. W. Lugmair

456

Synchrotron X-ray Studies of Super-critical Carbon Dioxide / Reservoir Rock Interfaces  

Broader source: Energy.gov [DOE]

Project obectives: Utilize synchrotron X-ray measurements, to monitor all aspects of atomic to nanoscale structural changes resulting from chemical interactions of scCO2-H2O binary fluids with rocks under environments directly relevant to EGS.

457

A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrotherm...  

Open Energy Info (EERE)

pre-intrusive metavolcanic and metasedimentary rocks can have considerably higher Sr-isotope ratios (0.7061-0.7246 and 0.7090-0.7250, respectively). Hydrothermally altered...

458

Subsurface Geology of the Fenton Hill Hot Dry Rock Geothermal Energy Site  

SciTech Connect (OSTI)

The Precambrian rock penetrated by wells EE-2A and -3A belongs to one or more granitic to granodioritic plutons. The plutonic rock contains two major xenolith zones of amphibolite, locally surrounded by fine-grained mafic rock of hybrid igneous origin. The granodiorite is cut by numerous leucogranite dikes that diminish in abundance with depth. The most prominent structural feature is the main breccia zone, in which the rock is highly fractured and moderately altered. This zone is at least 75 m thick and is of uncertain but near-horizontal orientation. Fracture abundance decreases with increasing depth below the main breccia zone, and fractures tend to be associated with leucogranite dikes. This association suggests that at least some of the fractures making up the geothermal reservoir are of Precambrian age or have long-range orientations controlled by the presence of Precambrian-age granitic dikes.

Levey, Schon S.

2010-12-01T23:59:59.000Z

459

Survival of Microorganisms in a Rock Bed Under Conditions Simulating Solar Heat Storage  

Science Journals Connector (OSTI)

...Under Conditions Simulating Solar Heat Storage Andris Zervins 1 Michael Babcock...colonization of rock beds used for solar heat storage does not appear likely under...under conditions simulating solar heat storage. | A laboratory-scale unit...

Andris Zervins; Michael Babcock; Robert W. Stone

1981-05-01T23:59:59.000Z

460

Effects of tunneling on groundwater flow and swelling of clay-sulfate rocks  

E-Print Network [OSTI]

[1] Swelling of clay-sulfate rocks is a major threat in tunneling. It is triggered by the transformation of the sulfate mineral anhydrite into gypsum as a result of water inflow in anhydrite-containing layers after tunnel ...

Butscher, Christoph

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

E-Print Network 3.0 - aggregates rock and stone Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

12;15 Figure A. 10: Picture BB07C1B... Beam Mark: BB07 Cut Location and View: Concrete Type: Self consolidating Aggregate: River Rock Cut ID... : Self consolidating...

462

Properties of CO2-Rich Pore Fluids and Their Effect on Porosity Evolution in EGS Rocks  

Broader source: Energy.gov [DOE]

Project objective: Quantify key parameters critically needed for developing and validating numerical modeling of chemical interactions between EGS reservoir rocks and supercritical CO2and CO2-rich aqueous fluids.

463

GEOTECHNICAL ASSESSMENT AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE ISOLATION IN CRYSTALLINE AND ARGILLACEOUS ROCKS SYMPOSIUM  

E-Print Network [OSTI]

Rock Mechanics University of Lulea S-95187 Lu1ea SWEDEN Dr.University Q of Lund and Lulea Institute of Technology,bentonite/quartz buffer mass, Lulea Institute of Technology,

Authors, Various

2011-01-01T23:59:59.000Z

464

Inhibition of Aspergillus niger Phosphate Solubilization by Fluoride Released from Rock Phosphate  

Science Journals Connector (OSTI)

...overestimation due to the adherence of phosphate particles to the mycelium (19). Uninoculated...supplemented with 3 g of rock phosphate (particle size 75 mum in diameter) per liter...extracellular enzyme glucose oxidase (GOD), which converts glucose into gluconic...

Gilberto de Oliveira Mendes; Nikolay Bojkov Vassilev; Victor Hugo Araújo Bonduki; Ivo Ribeiro da Silva; José Ivo Ribeiro Jr; Maurício Dutra Costa

2013-06-14T23:59:59.000Z

465

SEARCH FOR UNDERGROUND OPENINGS FOR IN SITU TEST FACILITIES IN CRYSTALLINE ROCK  

E-Print Network [OSTI]

Eng. Min. J. , 1939, The Bunker Hill and Sullivan Enterprisethe Fletcher Mine near Bunker, Mo. , U.S. Bur. Min. Reportproperties of mine rocks, Bunker Hill Mine, Coeur d'Alene

Wallenberg, H.A.

2010-01-01T23:59:59.000Z

466

Effects of burial history, rock ductility and recovery magnitude on inversion of normal faulted strata  

E-Print Network [OSTI]

reactivation of the normal faults may occur during coaxial contraction even though such faults are unfavorably oriented assuming typical rock friction behavior and a homogeneous stress state. Localized reverse slip on normal faults is favored when strata...

Kuhle, Nathan John

2012-06-07T23:59:59.000Z

467

Thermal Conductivity of Certain Rock Types and its Relevance to the Storage of Nuclear Waste  

Science Journals Connector (OSTI)

Nine rocks selected from the surface of three plutons have been examined petrographically and their thermal conductivities measured in the temperature range of 100° to 500°C. The thermal conductivities of differe...

V. V. Mirkovich; J. A. Soles

1978-01-01T23:59:59.000Z

468

Shale Rocks as Nuclear Waste Repositories: Hydrothermal Reactions with Glass, Ceramic and Spent Fuel Waste Forms  

Science Journals Connector (OSTI)

The objectives of various contributions from this laboratory have been to simulate “worst case” situations, given a proposed choice of waste form, repository rock, and waste loading/waste age. The “worst case”...

W. Phelps Freeborn; Michael Zolensky…

1980-01-01T23:59:59.000Z

469

Significance of chloritoid-bearing and staurolite-bearing rocks in the Picuris Range, New Mexico  

Science Journals Connector (OSTI)

...in the Picuris Mountains if endugh sillimanite- bearing rocks were examined. ACKNOWLEDGMENTS I thank Harold Dailey and John Futch for assistance in the field and in p trographie work. Elaine Padovani, James Toni, and James Carter were helpful with microprobe...

470

Carbon and oxygen isotope stratigraphy of the oxfordian carbonate rocks in Amu Darya basin  

Science Journals Connector (OSTI)

Based on the detailed research on petrologic and geochemical characteristics of deposition and diagenesis of Oxfordian carbonate rocks in Amu Darya Basin, Turkmenistan, carbon and oxygen isotopes were analyzed...

Rongcai Zheng ???; Yanghui Pan ???; Can Zhao ??; Lei Wu ??…

2013-02-01T23:59:59.000Z

471

The nature of fire-cracked rock: new insights from ethnoarchaeological and laboratory experiments  

E-Print Network [OSTI]

the understanding of the geothennodynamics of FCR production. FCR from two experimental data sets are cut to expose flat surfaces that are inspected for thermal-weathering characteristics under low-power magnification. Analytical results indicate that rock...

Jackson, Michael A

2012-06-07T23:59:59.000Z

472

Direct Prediction of the Absolute Permeability of Unconsolidated and Consolidated Reservoir Rock  

E-Print Network [OSTI]

SPE 90084 Direct Prediction of the Absolute Permeability of Unconsolidated and Consolidated unconsolidated rocks whose micro-tomographic images cannot be obtained. The lattice-Boltzmann method is used

Patzek, Tadeusz W.

473

Prediction of rocks thermal conductivity from elastic wave velocities, mineralogy and microstructure  

Science Journals Connector (OSTI)

......exploitation of geothermal energy rely on the proper...predict TC in a cost-effective way...geometry of the cost-function and...crustal rocks and geothermal applications...Clauser C. Geothermal energy. Landolt Bornstein......

Lucas Pimienta; Joel Sarout; Lionel Esteban; Claudio Delle Piane

2014-01-01T23:59:59.000Z

474

Aggregate production: Fines generation during rock crushing M.S. Guimaraes a  

E-Print Network [OSTI]

gathered during visits to quarries, an extensive survey and laboratory experiments are used to explore by a series of crushing stages. Comminution in typical hard rock quarries is sketched in Fig. 1. ASTM particle

Palomino, Angelica M.

475

Numerical and analytical modeling of heat transfer between fluid and fractured rocks  

E-Print Network [OSTI]

Modeling of heat transfer between fluid and fractured rocks is of particular importance for energy extraction analysis in EGS, and therefore represents a critical component of EGS design and performance evaluation. In ...

Li, Wei, S.M. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

476

Oxidation and stabilization of hydrocarbon fuels in contact with rock salt  

SciTech Connect (OSTI)

Underground storage is the most ecologically clean and economical method for extended storage of natural gas, crude oil, and petroleum products. Such storage reservoirs are created in stable rock (granites, gneisses, limestone, etc.), rock salt deposits, clays, abandoned mines, and permafrost formations. In this investigation of the influence of rock salt deposits on the oxidation of hydrocarbons (summer-grade straight-run diesel fuel L and automotive gasoline A-76 [unleaded, low-octane]), the authors carried out a kinetic study of hydroperoxide accumulation during the oxidation of these fuels after contact with a saturated solution of rock salt (brine). The experiments were performed in a bubbler-type unit with various ratios of brine to fuel.

Klinaeva, E.V.; Golubeva, I.A.; Tolstykh, L.I. [and others

1995-11-01T23:59:59.000Z

477

Regional Geology: GIS Database for Alternative Host Rocks and Potential Siting Guidelines  

Broader source: Energy.gov [DOE]

The objective of this work is to develop a spatial database that integrates both geologic data for alternative host-rock formations and information that has been historically used for siting...

478

Subsalt source rock maturity in the Sudanese Red Sea  

SciTech Connect (OSTI)

Thermal modeling can demonstrate that stratal salt deposits may provide a significant heat conduit and conceptually provide a basis for hypothermal fairways of hydrocarbon aspiration in regions of dominant thermal overmaturity. However, accurate evaluation of thermal maturity suppression by modeling must be geologically constrained. With respect to the Tertiary Tokar Delta of offshore Sudan, ID tectonic subsidence analysis of boreholes in the region reveals at least two major pu1ses of crustal extension and associated heating (24-20 m.a. and 5.4-2.7 m.a.). Integrating the borehole geochemical information with a Tokar Delta seismic stratigraphic interpretation allows the construction of constrained 2D thermal basin models through time using Procom BMT. The best match between the observed and modelled vitrinite reflectance values is achieved by using a two phase tectonic stretching model with pulses at 22{+-}2 m.a. and 4{+-}1.5 m.a. and incremental subcrustal stretching factors which vary between 2.65-2.75. Utilizing these parameters suggests the top of the oil window to occur within the Zeit Formation and bottom of the oil window to exist at the base of the Dungunab Salt. As only subsalt source rocks are observed, this model would tend to negate the possibility of the occurrence of liquid hydrocarbons. For the Tokar Delta the presently observed general high heat flow is so high that it leads in all cases to overcooked organics for a subsalt source. However, that hydrocarbons in the post-salt Zeit Formation of the Tokar Delta have been discovered suggests significant secondary hydrocarbon migration to have occurred within the late Miocene (15.4 - 5.4 m.a.). Potential migration pathways would be a1ong basement-induced fault conduits. If true, similar secondary migration play concepts may be applicable elsewhere in the Red Sea.

Geiger, C. [Univ. of Oklahoma, Norman, OK (United States)]|[Preussag Energie, Lingen (Germany); Pigott, J.; Forgotson, J.M. Jr. [Univ. of Oklahoma, Norman, OK (United States)] [and others

1995-08-01T23:59:59.000Z

479

Uranium mineralization in fluorine-enriched volcanic rocks  

SciTech Connect (OSTI)

Several uranium and other lithophile element deposits are located within or adjacent to small middle to late Cenozoic, fluorine-rich rhyolitic dome complexes. Examples studied include Spor Mountain, Utah (Be-U-F), the Honeycomb Hills, Utah (Be-U), the Wah Wah Mountains, Utah (U-F), and the Black Range-Sierra Cuchillo, New Mexico (Sn-Be-W-F). The formation of these and similar deposits begins with the emplacement of a rhyolitic magma, enriched in lithophile metals and complexing fluorine, that rises to a shallow crustal level, where its roof zone may become further enriched in volatiles and the ore elements. During initial explosive volcanic activity, aprons of lithicrich tuffs are erupted around the vents. These early pyroclastic deposits commonly host the mineralization, due to their initial enrichment in the lithophile elements, their permeability, and the reactivity of their foreign lithic inclusions (particularly carbonate rocks). The pyroclastics are capped and preserved by thick topaz rhyolite domes and flows that can serve as a source of heat and of additional quantities of ore elements. Devitrification, vapor-phase crystallization, or fumarolic alteration may free the ore elements from the glassy matrix and place them in a form readily leached by percolating meteoric waters. Heat from the rhyolitic sheets drives such waters through the system, generally into and up the vents and out through the early tuffs. Secondary alteration zones (K-feldspar, sericite, silica, clays, fluorite, carbonate, and zeolites) and economic mineral concentrations may form in response to this low temperature (less than 200 C) circulation. After cooling, meteoric water continues to migrate through the system, modifying the distribution and concentration of the ore elements (especially uranium).

Burt, D.M.; Sheridan, M.F.; Bikun, J.; Christiansen, E.; Correa, B.; Murphy, B.; Self, S.

1980-09-01T23:59:59.000Z

480

E-Print Network 3.0 - ages constrain gabbroic Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The carbon geochemistry of serpentinized peridotites and gabbroic rocks recovered... fracture-controlled seawater circulation deep into the gabbroic core of the massif. Thus,...

Note: This page contains sample records for the topic "rock lithology geochemistry" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Final Environmental Assessment of Ground Water Compliance at the Slick Rock, Colorado, UMTRA Project Site  

Broader source: Energy.gov (indexed) [DOE]

58 58 Environmental Assessment of Ground Water Compliance at the Slick Rock, Colorado, UMTRA Project Sites Final February 2003 Prepared by U.S. Department of Energy Grand Junction Office Grand Junction, Colorado Work Performed Under DOE Contract No. DE-AC13-02GJ79491 DOE Grand Junction Office EA of Ground Water Compliance at the Slick Rock Sites February 2003 Final Page iii Contents Page Acronyms and Abbreviations...........................................................................................................v Executive Summary...................................................................................................................... vii 1.0 Introduction.............................................................................................................................1

482

ACOUSTICAL IMAGING AND MECHANICAL PROPERTIES OF SOFT ROCK AND MARINE SEDIMENTS  

SciTech Connect (OSTI)

The research during this project has concentrated on developing a correlation between rock deformation mechanisms and their acoustic velocity signature. This has included investigating: (1) the acoustic signature of drained and undrained unconsolidated sands, (2) the acoustic emission signature of deforming high porosity rocks (in comparison to their low porosity high strength counterparts), (3) the effects of deformation on anisotropic elastic and poroelastic moduli, and (4) the acoustic tomographic imaging of damage development in rocks. Each of these four areas involve triaxial experimental testing of weak porous rocks or unconsolidated sand and involves measuring acoustic properties. The research is directed at determining the seismic velocity signature of damaged rocks so that 3-D or 4-D seismic imaging can be utilized to image rock damage. These four areas of study are described in the report: (1) Triaxial compression experiments have been conducted on unconsolidated Oil Creek sand at high confining pressures. (2) Initial experiments on measuring the acoustic emission activity from deforming high porosity Danian chalk were accomplished and these indicate that the AE activity was of a very low amplitude. (3) A series of triaxial compression experiments were conducted to investigate the effects of induced stress on the anisotropy developed in dynamic elastic and poroelastic parameters in rocks. (4) Tomographic acoustic imaging was utilized to image the internal damage in a deforming porous limestone sample. Results indicate that the deformation damage in rocks induced during laboratory experimentation can be imaged tomographically in the laboratory. By extension the results also indicate that 4-D seismic imaging of a reservoir may become a powerful tool for imaging reservoir deformation (including imaging compaction and subsidence) and for imaging zones where drilling operation may encounter hazardous shallow water flows.

Thurman E. Scott, Jr.; Younane Abousleiman

2004-04-01T23:59:59.000Z

483

Displacement of oil from reservoir rock using high molecular weight polymer solutions  

E-Print Network [OSTI]

DISPLACEMENT OF OIL FROM RESERVOIR ROCK USING HIGH MOLECULAR MEIGHT POLYMER SOLUTIONS A Thesis by HOUSHANG BARZI Submitted to the Graduate College of Texas AIM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE Aup;ust l972 Major Subject; Petroleum Engineering DISPLACENJENT OF OIL FROM RESERVOIR ROCK USING HIGH MOLECULAR WEIGHT POLYMER SOLUTIONS A Thesis by HOUSHANG BARZI Approved as +o style and content by~ airman of Commi+tee Member ~ed f' D p...

Barzi, Houshang

1972-01-01T23:59:59.000Z

484

Rock mechanics issues and research needs in the disposal of wastes in hydraulic fractures  

SciTech Connect (OSTI)

The proposed rock mechanics studies outlined in this document are designed to answer the basic questions concerning hydraulic fracturing for waste disposal. These questions are: (1) how can containment be assured for Oak Ridge or other sites; and (2) what is the capacity of a site. The suggested rock mechanics program consists of four major tasks: (1) numerical modeling, (2) laboratory testing, (3) field testing, and (4) monitoring. These tasks are described.

Doe, T.W.; McClain, W.C.

1984-07-01T23:59:59.000Z

485

Chemical and petrological characteristics of the intrusive rocks of the Quitman Mountains, Texas  

E-Print Network [OSTI]

University Directed by: Dr. Thomas T. Tieh A petrological and geochemical study of a suite of differentiated intrusive rocks of the Northern Quitman Mountains, Hudspeth County, Texas, has been made. For the relatively small exposed area (approximately 1D...- face extent of the dense intrusive rocks is much greater than the outcrop. These data also suggest that the less dense central volcanic complex is probably a plug having deepseated roots. 1 wish to dedicate this thesis to my parents and wife, Becki...

Seay, Christopher Sidney

2012-06-07T23:59:59.000Z

486

Release of uranium and thorium from granitic rocks during in situ weathering and initial erosion  

E-Print Network [OSTI]

RELEASE OF URANIUM AND THORIUM FROM GRANITIC ROCKS DURING IN SITU WEATHERING AND INITIAL EROSION A Thesis by ERNEST BROUGHTON LEDGER, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August. 1978 Major Subject: Geology RELEASE OF URANIUM AND THORIUM FROM GRANITIC ROCKS DURING IN SITU WEATHERING AND INITIAL EROSION A Thesis by ERNEST BROUGHTON LEDGER, JR. Approved as to style and content by...

Ledger, Ernest Broughton

2012-06-07T23:59:59.000Z

487

The interaction of two closely spaced cracks - rock models and computer simulations  

E-Print Network [OSTI]

THE INTERACTION OF TWO CLOSELY SPACED CRACKS ROCK MODELS AND COMPUTER SIMULATIONS A Thesis by PENG LIN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1990 Major Subject: Geophysics THE INTERACTION OF TWO CLOSELY SPACED CRACKS ROCK MODELS AND COMPUTER SIMULATIONS A Thesis by PENG LIN Approved as to style and content by: o . ogan ( -Chair Committee) Andreas K. Kronenberg (Co...

Lin, Peng

2012-06-07T23:59:59.000Z

488

Merguerian, Charles; and Ozdemir, Levent, 2003, Rock Mass Properties and Hard Rock TBM Penetration Rate Investigations, Queens Tunnel Complex, NYC Water Tunnel #3, Stage 2: p.  

E-Print Network [OSTI]

Properties and Hard Rock TBM Penetration Rate Investigations, Queens Tunnel Complex, NYC Water Tunnel #3 and established geological causes for decreased TBM penetration rates. 1 #12;INTRODUCTION Our combined geological penetration rates in granulite facies terranes. The Queens Tunnel TBM experienced poor penetration rates

Merguerian, Charles

489

USING RECENT ADVANCES IN 2D SEISMIC TECHNOLOGY AND SURFACE GEOCHEMISTRY TO ECONOMICALLY REDEVELOP A SHALLOW SHELF CARBONATE RESERVOIR: VERNON FIELD, ISABELLA COUNTY, MI  

SciTech Connect (OSTI)

Presented in this quarterly report is the Case History and Well Summary for the Vernon Field demonstration project in Isabella County, Michigan. This new case history and well summary format organizes and presents the technical and historical details of the Vernon Field demonstration, as well as the field demonstration results and the applicability of these results to other demonstration projects. This format could be duplicated for other demonstration projects and will be used on all subsequent field demonstrations as they near completion. Planning for the annual project meeting in Tampa, Florida has begun. This meeting will be held March 7-9, 2003 at the same site as the last three meetings. The goals of this project were to: (1) test the use of multi-lateral wells to recover bypassed hydrocarbons and (2) to access the potential of using surface geochemistry to reduce drilling risk. Two new demonstration wells, the State-Smock and the Bowers 4-25, were drilled to test the Dundee Formation at Vernon Field for bypassed oil. Neither well was commercial, although both produced hydrocarbon shows. An extensive geochemical survey in the vicinity of Vernon Field, covering much of Isabella County, has produced a base map for interpretation of anomalies in Michigan. Several potential new anomalies were discovered that could be further investigated.

James R. Wood; W. Quinlan

2003-01-01T23:59:59.000Z

490

FASTCHEM/trademark/ (Fly Ash and Flue Gas Desulfurization Sludge Transport and Geochemistry) package: Volume 2, User's guide to the EFLOW groundwater flow code  

SciTech Connect (OSTI)

This report documents a two-dimensional finite element code, EFLOW, developed to simulate water flow in fully or variably saturated porous media. This code is one component in the FASTCHEM/trademark/ (Fly Ash and Flue Gas Desulfurization Sludge Transport and Geochemistry) package. The formulation of the governing equations and the numerical procedures used in the code are presented. The flow equation is approximated using the Galerkin finite element method. For variably saturated flow problems, nonlinearities caused by unsaturated soil properties, atmospheric boundary conditions (e.g., infiltration, evaporation and seepage faces), and water uptake by plant roots are treated using Picard or Newton-Raphson methods. For fully saturated unconfined flow problems, the governing equations are formulated in an areal plane, and nonlinear water-table boundary conditions are treated using the Picard method. Several test problems are presented to verify the code and demonstrate its utility. These problems range from simple one-dimensional to complex two-dimensional and axisymmetric problems. 24 refs., 39 figs., 27 tabs.

Not Available

1988-09-01T23:59:59.000Z

491

Palaeomagnetism of the South Harghita volcanic rocks of the East Carpathians: implications for tectonic rotations and palaeosecular variation in the past 5 Ma  

Science Journals Connector (OSTI)

......H) dependence and temperature (T) dependence of...distribution of blocking temperatures is in agreement with...Carpathians assessed by low-temperature thermochronology...Geochemistry and tectonic development of Cenozoic magmatism...Paleomagnetic results from the Snake River Plain: contribution......

C.G. Panaiotu; M. Visan; A. Tugui; I. Seghedi; A. G. Panaiotu

2012-04-01T23:59:59.000Z

492

MicroRNA-340 suppresses osteosarcoma tumor growth and metastasis by directly targeting ROCK1  

SciTech Connect (OSTI)

Highlights: •miR-340 is downregulated in OS cell lines and tissues. •miR-340 suppresses OS cell proliferation, migration and invasion. •miR-340 suppresses tumor growth and metastasis of OS cells in nude mice. •ROCK1 is a target gene of miR-340. •ROCK1 is involved in miR-340-induced suppression of OS cell proliferation, migration and invasion. -- Abstract: MicroRNAs (miRNAs) play key roles in cancer development and progression. In the present study, we investigated the role of miR-340 in the progression and metastasis of osteosarcoma (OS). Our results showed that miR-340 was frequently downregulated in OS tumors and cell lines. Overexpression of miR-340 in OS cell lines significantly inhibited cell proliferation, migration, and invasion in vitro, and tumor growth and metastasis in a xenograft mouse model. ROCK1 was identified as a target of miR-340, and ectopic expression of miR-340 downregulated ROCK1 by direct binding to its 3? untranslated region. siRNA-mediated silencing of ROCK1 phenocopied the effects of miR-340 overexpression, whereas restoration of ROCK1 in miR-340-overexpressing OS cells reversed the suppressive effects of miR-340. Together, these findings indicate that miR-340 acts as a tumor suppressor and its downregulation in tumor tissues may contribute to the progression and metastasis of OS through a mechanism involving ROCK1, suggesting miR-340 as a potential new diagnostic and therapeutic target for the treatment of OS.

Zhou, Xin; Wei, Min; Wang, Wei, E-mail: rjwangwei@126.com

2013-08-09T23:59:59.000Z

493

ITP Mining: Energy and Environmental Profile of the U.S. Mining Industry: Chapter 9: Limestone and Crushed Rock  

Broader source: Energy.gov (indexed) [DOE]

9 9 Limestone and Crushed Rock Crushed rock is one of the most accessible natural resources and a major basic raw material. It is used in construction, agriculture, and other industries using complex chemical and metallurgical processes. Despite the low value of its basic products, the crushed rock industry is a major contributor to and an indicator of the economic well being of the nation. Forms Of Crushed Rock About three-quarters of the crushed stone production is limestone and dolomite, followed by, in descending order of tonnage: granite, traprock, sandstone and quartzite, miscellaneous stone, marble, slate, calcareous marl, shell, volcanic cinder and scoria. Limestone, one of the largest produced crushed rock, is a sedimentary rock composed

494

Compressed air energy storage monitoring to support refrigerated mined rock cavern technology.  

SciTech Connect (OSTI)

This document is the final report for the Compressed Air Energy Storage Monitoring to Support Refrigerated-Mined Rock Cavern Technology (CAES Monitoring to Support RMRCT) (DE-FC26-01NT40868) project to have been conducted by CAES Development Co., along with Sandia National Laboratories. This document provides a final report covering tasks 1.0 and subtasks 2.1, 2.2, and 2.5 of task 2.0 of the Statement of Project Objectives and constitutes the final project deliverable. The proposed work was to have provided physical measurements and analyses of large-scale rock mass response to pressure cycling. The goal was to develop proof-of-concept data for a previously developed and DOE sponsored technology (RMRCT or Refrigerated-Mined Rock Cavern Technology). In the RMRCT concept, a room and pillar mine developed in rock serves as a pressure vessel. That vessel will need to contain pressure of about 1370 psi (and cycle down to 300 psi). The measurements gathered in this study would have provided a means to determine directly rock mass response during cyclic loading on the same scale, under similar pressure conditions. The CAES project has been delayed due to national economic unrest in the energy sector.

Lee, Moo Yul; Bauer, Stephen J.

2004-06-01T23:59:59.000Z

495

Lead, zinc, and strontium in limestone cap rock from Tatum salt dome, Mississippi  

SciTech Connect (OSTI)

Limestone cap rock at Tatum salt dome, Mississippi, contains disseminated pyrite, sphalerite, and galena, and disseminated to massive amounts of strontianite (SrCO/sub 3/) and celestite (SrSO/sub 4/). Sulfide minerals are locally present in bitumen-rich areas of the upper, massive portion of the limestone cap rock, whereas strontium minerals are disseminated throughout this zone. However, sulfide and strontium minerals are most abundant in the lower banded portion of the limestone cap rock, which consists of alternating subhorizontal light and dark-colored bands. The dark bands are composed of calcite of variable grain size, sulfides, quartz, dolomite, albite, and up to 1% bitumen that apparently formed by the biodegradation of crude oil. Lighter bands are composed of variable amounts of coarsely crystalline, euhedral calcite, strontianite, and celestite resulting in strontium (Sr) contents of up to 30% locally. Banded limestone cap rock at Tatum dome formed at the top of the actively dissolving anhydrite zone by a combination of sulfate reduction and oxidation of liquid hydrocarbons by bacteria to cause the precipitation of calcite and sulfide minerals and the accumulation of insoluble residue from the anhydrite (quartz, albite, dolomite). Lead and zinc in the sulfide minerals could have been derived from the dissolving anhydrite, but the abundance of Sr minerals present requires an external source. Present-day oil field brines in central Mississippi contain up to 3000 ppm Sr, and basin brines of similar composition apparently contributed Sr to the cap-rock environment during formation.

Saunders, J.A.

1988-09-01T23:59:59.000Z

496

Mechanical defradation of Emplacement Drifts at Yucca Mountain- A Modeling Case Study. Part I: Nonlithophysal Rock  

SciTech Connect (OSTI)

This paper outlines rock mechanics investigations associated with mechanical degradation of planned emplacement drifts at Yucca Mountain, which is the designated site for the proposed U.S. high-level nuclear waste repository. The factors leading to drift degradation include stresses from the overburden, stresses induced by the heat released from the emplaced waste, stresses due to seismically related ground motions, and time-dependent strength degradation. The welded tuff emplacement horizon consists of two groups of rock with distinct engineering properties: nonlithophysal units and lithophysal units, based on the relative proportion of lithophysal cavities. The term 'lithophysal' refers to hollow, bubble like cavities in volcanic rock that are surrounded by a porous rim formed by fine-grained alkali feldspar, quartz, and other minerals. Lithophysae are typically a few centimeters to a few decimeters in diameter. Part I of the paper concentrates on the generally hard, strong, and fractured nonlithop