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1

Double trouble: Paired ignimbrite eruptions and collateral subsidence in the Taupo Volcanic Zone, New Zealand  

Science Journals Connector (OSTI)

...version: In this window In a new window Figure 8. Oblique aerial view looking north-northeast along the line of the Horohoro fault...Kobayashi, T., Ishihara, K., Suzuki-Kamata, K., and Fukushima, D., 2003, Sakurajima volcano and pyroclastic deposits...

D.M. Gravley; C.J.N. Wilson; G.S. Leonard; J.W. Cole

2

Ar geochronology of magmatic activity, magma ux and hazards at Ruapehu volcano, Taupo Volcanic Zone,  

E-Print Network [OSTI]

, Auckland, New Zealand e New Mexico Geochronological Research Laboratory, New Mexico Institute of Mining and Technology, Socorro, NM, USA f New Mexico Bureau of Mines and Mineral Exploration, Socorro, NM, USA Received ka includes an entire s 300-m section of lavas in Whangaehu gorge as well as some lavas in Ohinepango

Dunbar, Nelia W.

3

Explosive basaltic volcanism of the Chikurachki Volcano (Kurile arc, Russia): Insights on pre-eruptive magmatic conditions  

E-Print Network [OSTI]

Explosive basaltic volcanism of the Chikurachki Volcano (Kurile arc, Russia): Insights on pre-Sakhalinsk, Russia d Institute of Volcanic Geology and Geochemistry, 683006 Petropavlovsk-Kamchatsky, Russia e Vernadsky Institute of Geochemistry and Analytical Chemistry, 117975 Moscow, Russia Received 13 December

Belousov, Alexander

4

Exploring links between physical and probabilistic models of volcanic eruptions: The Soufrie`re Hills Volcano, Montserrat  

E-Print Network [OSTI]

] Probabilistic methods play an increasingly important role in volcanic hazards forecasts. Here we show stiffening and gas exsolution, and depressurization due to development of permeability and gas escape. Our experience with the Soufrie`re Hills Volcano eruption sequence suggests that volcanic eruption forecasts

Connor, Charles

5

TECTONIC VERSUS VOLCANIC ORIGIN OF THE SUMMIT DEPRESSION AT MEDICINE LAKE VOLCANO, CALIFORNIA  

SciTech Connect (OSTI)

Medicine Lake Volcano is a Quaternary shield volcano located in a tectonically complex and active zone at the transition between the Basin and Range Province and the Cascade Range of the Pacific Province. The volcano is topped by a 7x12 km elliptical depression surrounded by a discontinuous constructional ring of basaltic to rhyolitic lava flows. This thesis explores the possibility that the depression may have formed due to regional extension (rift basin) or dextral shear (pull-apart basin) rather than through caldera collapse and examines the relationship between regional tectonics and localized volcanism. Existing data consisting of temperature and magnetotelluric surveys, alteration mineral studies, and core logging were compiled and supplemented with additional core logging, field observations, and fault striae studies in paleomagnetically oriented core samples. These results were then synthesized with regional fault data from existing maps and databases. Faulting patterns near the caldera, extension directions derived from fault striae P and T axes, and three-dimensional temperature and alteration mineral models are consistent with slip across arcuate ring faults related to magma chamber deflation during flank eruptions and/or a pyroclastic eruption at about 180 ka. These results are not consistent with a rift or pull-apart basin. Limited subsidence can be attributed to the relatively small volume of ash-flow tuff released by the only known major pyroclastic eruption and is inconsistent with the observed topographic relief. The additional relief can be explained by constructional volcanism. Striae from unoriented and oriented core, augmented by striae measurements in outcrop suggest that Walker Lane dextral shear, which can be reasonably projected from the southeast, has probably propagated into the Medicine Lake area. Most volcanic vents across Medicine Lake Volcano strike north-south, suggesting they are controlled by crustal weakness related to Basin and Range extension. Interaction of dextral shear, Basin and Range extension, and the zone of crustal weakness expressed as the Mount Shasta-Medicine Lake volcanic highland controlled the location and initiation of Medicine Lake Volcano at about 500 ka.

Mark Leon Gwynn

2010-05-01T23:59:59.000Z

6

Tectonic versus volcanic origin of the summit depression at Medicine Lake Volcano, California  

SciTech Connect (OSTI)

Medicine Lake Volcano is a Quaternary shield volcano located in a tectonically complex and active zone at the transition between the Basin and Range Province and the Cascade Range of the Pacific Province. The volcano is topped by a 7x12 km elliptical depression surrounded by a discontinuous constructional ring of basaltic to rhyolitic lava flows. This thesis explores the possibility that the depression may have formed due to regional extension (rift basin) or dextral shear (pull-apart basin) rather than through caldera collapse and examines the relationship between regional tectonics and localized volcanism. Existing data consisting of temperature and magnetotelluric surveys, alteration mineral studies, and core logging were compiled and supplemented with additional core logging, field observations, and fault striae studies in paleomagnetically oriented core samples. These results were then synthesized with regional fault data from existing maps and databases. Faulting patterns near the caldera, extension directions derived from fault striae P and T axes, and three-dimensional temperature and alteration mineral models are consistent with slip across arcuate ring faults related to magma chamber deflation during flank eruptions and/or a pyroclastic eruption at about 180 ka. These results are not consistent with a rift or pull-apart basin. Limited subsidence can be attributed to the relatively small volume of ash-flow tuff released by the only known major pyroclastic eruption and is inconsistent with the observed topographic relief. The additional relief can be explained by constructional volcanism. Striae from unoriented and oriented core, augmented by striae measurements in outcrop suggest that Walker Lane dextral shear, which can be reasonably projected from the southeast, has probably propagated into the Medicine Lake area. Most volcanic vents across Medicine Lake Volcano strike north-south, suggesting they are controlled by crustal weakness related to Basin and Range extension. Interaction of dextral shear, Basin and Range extension, and the zone of crustal weakness expressed as the Mount Shasta-Medicine Lake volcanic highland controlled the location and initiation of Medicine Lake Volcano at about 500 ka.

Mark Leon Gwynn

2010-05-01T23:59:59.000Z

7

Revised age for Midway volcano, Hawaiian volcanic chain  

Science Journals Connector (OSTI)

New conventional K-Ar,40Ar/39Ar, and petrochemical data on alkalic basalt pebbles from the basalt conglomerate overlying tholeiitic flows in the Midway drill hole show that Midway evolved past the tholeiitic shield-building stage and erupted lavas of the alkalic suite27.0 ± 0.6m.y. ago. The data also show that previously published conventional K-Ar ages on altered samples of tholeiite are too young by about 9 m.y. These results remove a significant anomaly in the age-distance relationships of the Hawaiian chain and obviate the need for large changes in either the rate of rotation of the Pacific plate about the Hawaiian pole or the motion of the plate relative to the Hawaiian hot spot since the time of formation of the Hawaiian-Emperor bend. All of the age data along the Hawaiian chain are now reasonably consistent with an average rate of volcanic propagation of 8.0 cm/yr and with 0.83°/m.y. of angular rotation about the Hawaiian pole.

G. Brent Dalrymple; David A. Clague; Marvin A. Lanphere

1977-01-01T23:59:59.000Z

8

Source of the great A.D. 1257 mystery eruption unveiled, Samalas volcano, Rinjani Volcanic Complex, Indonesia  

Science Journals Connector (OSTI)

...volume of the mapped deposit, as well as an estimation (by extrapolation to...history of El Chichon Volcano, Mexico . Geofis Int 48 ( 1 ): 97...volcanics as a heat sources of geothermal prospects fron eastern Lombok...includes counting uncertainty as well as the scatter of standards and...

Franck Lavigne; Jean-Philippe Degeai; Jean-Christophe Komorowski; Sébastien Guillet; Vincent Robert; Pierre Lahitte; Clive Oppenheimer; Markus Stoffel; Céline M. Vidal; Surono; Indyo Pratomo; Patrick Wassmer; Irka Hajdas; Danang Sri Hadmoko; Edouard de Belizal

2013-01-01T23:59:59.000Z

9

Predicting and validating the tracking of a Volcanic Ash Cloud during the 2006 Eruption of Mt. Augustine Volcano  

SciTech Connect (OSTI)

On 11 January 2006, Mount Augustine volcano in southern Alaska began erupting after 20-year repose. The Anchorage Forecast Office of the National Weather Service (NWS) issued an advisory on 28 January for Kodiak City. On 31 January, Alaska Airlines cancelled all flights to and from Anchorage after multiple advisories from the NWS for Anchorage and the surrounding region. The Alaska Volcano Observatory (AVO) had reported the onset of the continuous eruption. AVO monitors the approximately 100 active volcanoes in the Northern Pacific. Ash clouds from these volcanoes can cause serious damage to an aircraft and pose a serious threat to the local communities, and to transcontinental air traffic throughout the Arctic and sub-Arctic region. Within AVO, a dispersion model has been developed to track the dispersion of volcanic ash clouds. The model, Puff, was used operational by AVO during the Augustine eruptive period. Here, we examine the dispersion of a volcanic ash cloud from Mount Augustine across Alaska from 29 January through the 2 February 2006. We present the synoptic meteorology, the Puff predictions, and measurements from aerosol samplers, laser radar (or lidar) systems, and satellites. UAF aerosol samplers revealed the presence of volcanic aerosols at the surface at sites where Puff predicted the ash clouds movement. Remote sensing satellite data showed the development of the ash cloud in close proximity to the volcano and a sulfur-dioxide cloud further from the volcano consistent with the Puff predictions. Lidars showed the presence of volcanic aerosol with consistent characteristics aloft over Alaska and were capable of detecting the aerosol, even in the presence of scattered clouds and where the cloud is too thin/disperse to be detected by remote sensing satellite data. The lidar measurements revealed the different trajectories of ash consistent with the Puff predictions. Dispersion models provide a forecast of volcanic ash cloud movement that might be undetectable by any other means but are still a significant hazard. Validation is the key to assessing the accuracy of any future predictions. The study highlights the use of multiple and complementary observations used in detecting the trajectory ash cloud, both at the surface and aloft within the atmosphere.

Webley, Peter W.; Atkinson, D.; Collins, Richard L.; Dean, K.; Fochesatto, J.; Sassen, Kenneth; Cahill, Catherine F.; Prata, A.; Flynn, Connor J.; Mizutani, K.

2008-11-01T23:59:59.000Z

10

Factors controlling the morphology of monogenetic basaltic volcanoes: The Holocene volcanism of Gran Canaria (Canary Islands, Spain)  

Science Journals Connector (OSTI)

A detailed morphometric analysis was performed on the 24 Holocene eruptions of Gran Canaria, a nearly circular island located at the centre of the Canary Islands (Spain), developed as result of the eastward movement of the African plate over a mantle hotspot. Rigorous field work was carried out to generate a palaeogeomorphological reconstruction of the Holocene eruptions of Gran Canaria to obtain pre- and post-eruption digital terrain models (DTMs). These eruptions were of Strombolian monogenetic basaltic volcanism style. With respect to the cones, feeder fissures determine their location and some morphological features as crater openings which are usually perpendicular to the slope direction. In addition, the trade winds influence the final volcanic edifice shape and the extent of the pyroclastic sheet-like fall deposits. For the lava flows, the most significant controls are the eruption rate, affecting the maximum distance travelled, and the gully slope and shape that condition their flow path. Concerning volcanic hazard and risk assessment, the applied methodology has led to a better understanding of the recent eruptions and foresees the location and nature of future eruptions.

A. Rodriguez-Gonzalez; J.L. Fernandez-Turiel; F.J. Perez-Torrado; R. Paris; D. Gimeno; J.C. Carracedo; M. Aulinas

2012-01-01T23:59:59.000Z

11

Monitoring gases from andesite volcanoes  

Science Journals Connector (OSTI)

...Popocatapetl volcano, Mexico. Over three days before...measuring back-scattered solar ultraviolet irradiance...observed by lunar and solar occultation spectroscopy...volcanic gas compositions by solar occultation spectroscopy...volcan Popocata- petl, Mexico, June 7 and 10, 1995...

2000-01-01T23:59:59.000Z

12

Transition from alkaline to calc-alkaline volcanism during evolution of the Paleoproterozoic Francevillian basin of eastern Gabon (Western Central Africa)  

Science Journals Connector (OSTI)

Abstract We report new geochemical data for the volcanic and subvolcanic rocks associated with the evolution of the Francevillian basin of eastern Gabon during Paleoproterozoic times (c. 2.1–2 Ga). Filling of this basin has proceeded through four main sedimentary or volcano-sedimentary episodes, namely FA, FB, FC and FD. Volcanism started during the FB episode being present only in the northern part of the basin (Okondja sub-basin). This volcanism is ultramafic to trachytic in composition and displays a rather constant alkaline geochemical signature. This signature is typical of a within-plate environment, consistent with the rift-setting generally postulated for the Francevillian basin during the FB period. Following FB, the FC unit is 10–20 m-thick silicic horizon (jasper) attesting for a massive input of silica in the basin. Following FC, the FD unit is a c. 200–400 m-thick volcano-sedimentary sequence including felsic tuffs and epiclastic rocks. The geochemical signatures of these rocks are totally distinct from those of the FB alkaline lavas. High Th/Ta and La/Ta ratios attest for a calc-alkaline signature and slight fractionation between heavy rare-earth suggests melting at a rather low pressure. Such characteristics are comparable to those of felsic lavas associated with the Taupo zone of New Zealand, a modern ensialic back-arc basin. Following FD, the FE detrital unit is defined only in the Okondja region, probably associated with a late-stage collapse of the northern part of the basin. It is suggested that the alkaline to calc-alkaline volcanic transition reflects the evolution of the Francevillian basin from a diverging to a converging setting, in response to the onset of converging movements in the Eburnean Belt of Central Africa.

Denis Thiéblemont; Pascal Bouton; Alain Préat; Jean-Christian Goujou; Monique Tegyey; Francis Weber; Michel Ebang Obiang; Jean Louis Joron; Michel Treuil

2014-01-01T23:59:59.000Z

13

Modeling volcanic ash dispersal  

ScienceCinema (OSTI)

Explosive volcanic eruptions inject into the atmosphere large amounts of volcanic material (ash, blocks and lapilli). Blocks and larger lapilli follow ballistic and non-ballistic trajectories and fall rapidly close to the volcano. In contrast, very fine ashes can remain entrapped in the atmosphere for months to years, and may affect the global climate in the case of large eruptions. Particles having sizes between these two end-members remain airborne from hours to days and can cover wide areas downwind. Such volcanic fallout entails a serious threat to aircraft safety and can create many undesirable effects to the communities located around the volcano. The assessment of volcanic fallout hazard is an important scientific, economic, and political issue, especially in densely populated areas. From a scientific point of view, considerable progress has been made during the last two decades through the use of increasingly powerful computational models and capabilities. Nowadays, models are used to quantify hazard scenarios and/or to give short-term forecasts during emergency situations. This talk will be focused on the main aspects related to modeling volcanic ash dispersal and fallout with application to the well known problem created by the Eyjafjöll volcano in Iceland. Moreover, a short description of the main volcanic monitoring techniques is presented.

None

2011-10-06T23:59:59.000Z

14

Robot to probe inside Antarctic volcano  

Science Journals Connector (OSTI)

Robot to probe inside Antarctic volcano ... The first robotic observations inside the crater of a live volcano—using a unique, eight-legged robot called Danteare slated to start next week in Antarctica. ... A team of U.S. researchers will lower the spiderlike robot into Mount Erebus (pronounced "AIR-a-bus"), a 12,447-foot-high volcano on Ross Island, about 800 miles from the South Pole. ...

RICHARD SELTZER

1992-12-21T23:59:59.000Z

15

Geology of Kilauea Volcano | Open Energy Information  

Open Energy Info (EERE)

Geology of Kilauea Volcano Geology of Kilauea Volcano Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Geology of Kilauea Volcano Abstract This paper summarizes studies of the structure, stratigraphy, petrology, drill holes, eruption frequency, and volcanic and seismic hazards of Kilauea volcano. All the volcano is discussed, bul the focus is on its lower east rift zone (LERZ) because active exploration for geothermal energy is concentrated in that area. Kilauea probably has several separate hydrothermal-convection systems lhat develop in response to the dynamic behavior of the volcano and the influx of abundant meteoric water, of some of these hydrothermal convection systems are known through studies of surface geology,and drill holes. Observations of eruptions during the past

16

Volcano remote sensing with ground-based spectroscopy  

Science Journals Connector (OSTI)

...background. At Popocatepetl volcano, Mexico, they observed a steady increase in SiF4...measurements of volcanic gas compositions by solar FTIR spectroscopy. Nature, 396, 567-570...eruption plume at Popocatepetl volcano, Mexico. Nature, 396, 563-567. doi:10...

2005-01-01T23:59:59.000Z

17

Lab7: Volcanoes I. --Their Geographic Distribution Introduction  

E-Print Network [OSTI]

a wide variety of hazards to humans as well as their animals and structures. The first step. Pacuritin Volcano, Mexico Active Volcanoes of the World South Sandwich Islands. Also known as the Scotia arc and 50 exhibit geothermal activity. Kuriles. Chain of volcanic islands stretching from Kamchatka

Chen, Po

18

Applications of the VLF Induction Method For Studying Some Volcanic  

Open Energy Info (EERE)

the VLF Induction Method For Studying Some Volcanic the VLF Induction Method For Studying Some Volcanic Processes of Kilauea Volcano, Hawaii Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Applications Of The Vlf Induction Method For Studying Some Volcanic Processes Of Kilauea Volcano, Hawaii Details Activities (1) Areas (1) Regions (0) Abstract: The very low-frequency (VLF) induction method has found exceptional utility in studying various volcanic processes of Kilauea volcano, Hawaii because: (1) significant anomalies result exclusively from ionically conductive magma or still-hot intrusions (> 800°C) and the attendant electrolytically conductive hot groundwater; (2) basalt flows forming the bulk of Kilauea have very high resistivities at shallow depths that result in low geologic noise levels and relatively deep depths of

19

A 3D Magnetic Structure Of Izu-Oshima Volcano And Their Changes...  

Open Energy Info (EERE)

data show that the volcanic edifice of Izu-Oshima Volcano has a mean magnetization intensity ranging from 10.4 to 12.1 Am. The derived 3D magnetic structure shows low...

20

Project EARTH-13-TM1: Understanding CO2 emissions from Europe's restless caldera-forming volcanoes  

E-Print Network [OSTI]

Project EARTH-13-TM1: Understanding CO2 emissions from Europe's restless caldera-forming volcanoes the information contained in volcano CO2 emissions is important from both a volcanic hazards perspective into this program. The opportunity will also be taken to map out CO2 emissions at these systems and to review what

Henderson, Gideon

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

40Ar-39Ar Geochronology Of Magmatic Activity, Magma Flux And Hazards At  

Open Energy Info (EERE)

Ar-39Ar Geochronology Of Magmatic Activity, Magma Flux And Hazards At Ar-39Ar Geochronology Of Magmatic Activity, Magma Flux And Hazards At Ruapehu Volcano, Taupo Volcanic Zone, New Zealand Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 40Ar-39Ar Geochronology Of Magmatic Activity, Magma Flux And Hazards At Ruapehu Volcano, Taupo Volcanic Zone, New Zealand Details Activities (0) Areas (0) Regions (0) Abstract: We have determined precise eruption ages for andesites from Ruapehu volcano in the Tongariro Volcanic Centre of the Taupo Volcanic Zone (TVZ) using 40Ar/39Ar furnace step-heating of separated groundmass concentrates. The plateau ages indicate several eruptive pulses near 200, 134, 45, 22 and <15 ka and, based on our and previous field mapping confirm the lavas of the Te Herenga Formation as the oldest exposed part of the

22

A 3D Magnetic Structure Of Izu-Oshima Volcano And Their Changes After The  

Open Energy Info (EERE)

Magnetic Structure Of Izu-Oshima Volcano And Their Changes After The Magnetic Structure Of Izu-Oshima Volcano And Their Changes After The Eruption In 1986 As Estimated From Repeated Airborne Magnetic Surveys Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A 3D Magnetic Structure Of Izu-Oshima Volcano And Their Changes After The Eruption In 1986 As Estimated From Repeated Airborne Magnetic Surveys Details Activities (0) Areas (0) Regions (0) Abstract: A 3D magnetic inversion method using a conjugate gradient method (CG method) was developed for constructing 3D magnetization models of a volcanic edifice and applied to aeromagnetic anomalies of Izu-Oshima Volcano surveyed in 1986 and in 1997. The calculated results of the 1986 data show that the volcanic edifice of Izu-Oshima Volcano has a mean magnetization intensity ranging from 10.4 to 12.1 A/m. The derived 3D

23

Active System For Monitoring Volcanic Activity- A Case Study Of The  

Open Energy Info (EERE)

System For Monitoring Volcanic Activity- A Case Study Of The System For Monitoring Volcanic Activity- A Case Study Of The Izu-Oshima Volcano, Central Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Active System For Monitoring Volcanic Activity- A Case Study Of The Izu-Oshima Volcano, Central Japan Details Activities (0) Areas (0) Regions (0) Abstract: A system is proposed for the monitoring of changes in the underground structure of an active volcano over time by applying a transient electromagnetic method. The monitoring system is named ACTIVE, which stands for Array of Controlled Transient-electromagnetics for Imaging Volcano Edifice. The system consists of a transmitter dipole used to generate a controlled transient electromagnetic (EM) field and an array of receivers used to measure the vertical component of the transient magnetic

24

Validation of Innovative Exploration Technologies for Newberry Volcano: LIDAR of Newberry Volcano 2012  

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

Validation of Innovative Exploration Technologies for Newberry Volcano: LIDAR of Newberry Volcano 2012

Jaffe, Todd

25

Jasper Seamount: Seven million years of volcanism  

SciTech Connect (OSTI)

Jasper Seamount is a young, mid-sized (690 km{sup 3}) oceanic intraplate volcano located about 500 km west-southwest of San Diego, California. Reliable {sup 40}Ar/{sup 39}Ar age data were obtained for several milligram-sized samples of 4 to 10 Ma plagioclase by using a defocused laser beam to clean the samples before fusion. Gee and Staudigel suggested that Jasper Seamount consists of a transitional to tholeiitic shield volcano formed by flank transitional series lavas, overlain by flank alkalic series lavas and summit alkalic series lavas. Twenty-nine individual {sup 40}Ar/{sup 39}Ar laser fusion analyses on nine samples confirm the stratigraphy: 10.3-10.0 Ma for the flank transitonal series, 8.7-7.5 Ma for the flank alkalic series, and 4.8-4.1 Ma for the summit alkalic series. The alkalinity of the lavas clearly increases with time, and there appear to be 1 to 3 m.y. hiatuses between each series. The age data are consistent with the complex magnetic anomaly of Jasper; however the dominant reversed polarity inferred from the anomaly suggests that most of the seamount formed at ca. 11 Ma, prior to the onset of Chron C5N. The duration of volcanism of Jasper Seamount is slightly longer than the duration of volcanism at Hawaiian volcanoes, suggesting that individual age data from seamounts may constrain the age of a seamount only to within about 7 m.y. unless the stage of volcanism can be unambiguously determined. Extrapolating from the results of our study, similar precision in age determinations should be possible on 50 mg of 1 Ma plagioclase from mid-ocean ridge basalt, opening new possibilities in the geochronology of young, low-potassium volcanic rocks.

Pringle, M.S. (Geological Survey, Menlo Park, California (USA)); Staudigel, H.; Gee, J. (Scripps Institution of Oceanography, LaJolla, California (USA))

1991-04-01T23:59:59.000Z

26

New Model of Earth's Interior Reveals Clues to Hotspot Volcanoes  

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

New Model of New Model of Earth's Interior Reveals Clues to Hotspot Volcanoes New Model of Earth's Interior Reveals Clues to Hotspot Volcanoes October 29, 2013 | Tags: Basic Energy Sciences (BES), Geosciences, Hopper Contact: Linda Vu, +1 510 495 2402, lvu@lbl.gov volcanic-hotspots1.jpg This 3D view of the top 1,000 kilometers of Earth's mantle beneath the central Pacific shows the relationship between seismically-slow "plumes" and channels imaged in the UC Berkeley study. Green cones on the ocean floor mark islands associated with "hotspot" volcanoes, such as Hawaii and Tahiti. (Image courtesy of Berkeley Seismological Laboratory, UC Berkeley) Using supercomputers at the Department of Energy's National Energy Research Scientific Computing Center (NERSC), scientists have detected

27

Chikurachki volcano (Kurile Islands, Russia)  

E-Print Network [OSTI]

Chikurachki volcano (Kurile Islands, Russia) the unique volcano with frequent basaltic plinian-Kamchatsky, Russia #12;#12;Historical eruptions of Chikurachki Year 1853-59 1958 1961 1964 1973 1986 2002 Column

Belousov, Alexander

28

FESD Proposal, Type I VOICE: Volcano, Ocean, Ice, and Carbon Experiments  

E-Print Network [OSTI]

in continental ice volume and sea level produce changes in pressure and stress within the crust and mantleFESD Proposal, Type I VOICE: Volcano, Ocean, Ice, and Carbon Experiments Project Manager: Charles during Pleistocene ice ages. We posit that changes in sea level and ice volume drive changes in volcanism

Huybers, Peter

29

Growth, destruction and facies architecture of effusive and explosive volcanics in the Miocene Shama basin, southwest of Saudi Arabia: Subaqueous–subaerial volcanism in a lacustrine setting  

Science Journals Connector (OSTI)

Abstract The Harrat Shama Volcanic Basin (HSVB) is a part of a small, well-exposed intra-continental extensional basin that formed during the opening of the Red Sea, containing 5 km of Miocene bimodal volcanics and volcaniclastic rocks. The Shama basin accumulated a thick fluvio-lacustrine fill in which two distinct volcanic sequences and their deposits can overlap with each other. In addition, complete facies architectures of the Shama volcanics have been recognized providing a complex mixed siliciclastic and volcaniclastic basin infill in the respective basin where volcanism took place. The lower sequence is composed of hyaloclastites, zeolite-bearing bedded tuffs, and bedded accretionary-lapilli-tuffs and an upper sequence, is made up of pumiceous lapilli-tuffs and peperitic breccias capped by basaltic lava flows. The former is interpreted to have been dominated by discrete, phreatomagmatic fall deposits, which are attributed to an overall high eruption rate in a lacustrine setting, followed by a dominantly subaerial pumiceous lapilli tuff deposits and volcaniclastic sediments sited in the upper part of the basin with paleosols and/or fluvial deposits in between the two sequences. These deposits could be related to polygenetic volcanoes and tectonic structures, such as faults and rift-zones. These two sequences display a complex succession of effusive and explosive volcanisms and their reworked deposits, with abundant evidences of magma–water interaction such as peperites for non-explosive magma–water interaction with the lacustrine water-saturated sediment and standing water body in a lake environment. The difference eruption dynamics and fragmentation mechanisms between the two sequences reflect progressive environmental changes from subaqueous or watery to subaerial or dry. Fluvial erosion and deposition completed the evolution of the emergent marginal part of the Shama basin. The Shama basin then experienced volcano growth and degradation that formed the two sequences; NW-SE-trending basement faulting triggered multiple flank collapses and volcanic debris avalanches, and voluminous pumiceous lapilli-tuff eruptions produced a caldera (upper sequence). Lacustrine conditions persisted during the destruction and post-destruction stages of the volcano's evolution, as evidenced by magma–water interactions. Shama basin is a small-volume volcano, similar to tuff rings; however, its magma compositions, complex eruption styles, and inter-eruptive breaks suggest, that it closely resembles a volcanic architecture commonly associated with large, composite volcanoes. The main cause of such complex eruptive behavior resides in the stratigraphic, structural, and hydrogeological characteristics of the substrate above which the volcanoes were emplaced, rather than on the compositional characteristics of the erupting magma, which do not show significant variation among the different deposits.

A. Abdel Motelib; E.A. Khalaf; H. Al-Marzouki

2014-01-01T23:59:59.000Z

30

Resuspension of Relic Volcanic Ash and Dust from Katmai: Still an Aviation Hazard  

Science Journals Connector (OSTI)

Northwest winds were strong enough to continuously resuspend relic volcanic ash from the Katmai volcano cluster and the Valley of Ten Thousand Smokes on 20–21 September 2003. The ash cloud reached over 1600 m and extended over 230 km into the ...

David Hadley; Gary L. Hufford; James J. Simpson

2004-10-01T23:59:59.000Z

31

RESEARCH ARTICLE Apparent downwind depletion of volcanic SO2 flux--lessons  

E-Print Network [OSTI]

. Volcano monitoring . FLYSPEC Introduction Volcanic gas emissions play an important role indicate that dry deposition of sulfur from the plume and conversion of SO2 to sulfate aerosols within 5km downwind, and is responsible for the apparent loss of SO2. Due to the importance of SO2 emission

Williams-Jones, Glyn

32

Using hydraulic equivalences to discriminate transport processes1 of volcanic flows1  

E-Print Network [OSTI]

Mexico, to distinguish the various modes of transport at play in their genesis. Using the concept11, 1987). Despite the ubiquity of25 such deposits, we only have a crude understanding of their genesis Toluca Volcano, Mexico (Fig. 1).34 HYDRAULIC EQUIVALENCES35 Models of volcanic flows invoke several

Boyer, Edmond

33

A Preparation Zone For Volcanic Explosions Beneath Naka-Dake Crater, Aso  

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 » A Preparation Zone For Volcanic Explosions Beneath Naka-Dake Crater, Aso Volcano, As Inferred From Magnetotelluric Surveys Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Preparation Zone For Volcanic Explosions Beneath Naka-Dake Crater, Aso Volcano, As Inferred From Magnetotelluric Surveys Details Activities (0) Areas (0) Regions (0) Abstract: The 1st crater of Naka-dake, Aso volcano, is one of the most active craters in Japan, and known to have a characteristic cycle of activity that consists of the formation of a crater lake, drying-up of the

34

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

35

Shield Volcano | 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 » Shield Volcano Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Shield Volcano Dictionary.png Shield Volcano: A dome shaped volcano with gently sloping sides and a broad base characteristic of relatively low viscosity, basaltic lava eruptions. Other definitions:Wikipedia Reegle Topographic Features List of topographic features commonly encountered in geothermal resource areas: Mountainous Horst and Graben Shield Volcano Flat Lava Dome Stratovolcano Cinder Cone Caldera Depression Resurgent Dome Complex Schematic representation of the internal structure of a typical shield

36

Supporting Sound Management of Our Coasts and Seas Kasatochi Volcano Alaska is noteworthy as a region of frequent seismic and  

E-Print Network [OSTI]

as a region of frequent seismic and volcanic activity. The region contains 52 historically active volcanoes of the U.S. Fish and Wildlife Service, Alaska Maritime National Wildlife Refuge (AMNWR); therefore which long-term comparisons will be made. The teams were supported in the field by the U.S. Fish

37

Melt zones beneath five volcanic complexes in California: an assessment of  

Open Energy Info (EERE)

Melt zones beneath five volcanic complexes in California: an assessment of Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences Details Activities (5) Areas (5) Regions (0) Abstract: Recent geological and geophysical data for five magma-hydrothermal systems were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. The areas studied were: (1) Salton Trough, (2) The Geysers-Clear Lake, (3) Long Valley caldera, (4) Coso volcanic field, and (5) Medicine Lake volcano, all located in California and all selected on the basis of recent volcanic activity and published indications of crustal melt zones. 23 figs.

38

Volcanoes in Virginia!  

SciTech Connect (OSTI)

The recent earthquake may have you wondering what other surprises Virginia's geology may hold. Could there be a volcanic eruption in Virginia? Probably not today, but during the Eocene, about 35-48 million years ago, a number of mysterious eruptions occurred in western Virginia. This talk investigates the possible origins of these eruptions, and what they can tell us about the crust and mantle underneath Virginia.

Johnson, Elizabeth Baedke [James Madison University

2012-01-24T23:59:59.000Z

39

Volcanoes in Virginia!  

ScienceCinema (OSTI)

The recent earthquake may have you wondering what other surprises Virginia's geology may hold. Could there be a volcanic eruption in Virginia? Probably not today, but during the Eocene, about 35-48 million years ago, a number of mysterious eruptions occurred in western Virginia. This talk investigates the possible origins of these eruptions, and what they can tell us about the crust and mantle underneath Virginia.

Johnson, Elizabeth Baedke [James Madison University

2014-06-25T23:59:59.000Z

40

The geological and geochemical study of the mud volcanoes of Azerbaijan  

SciTech Connect (OSTI)

Azerbaijan is a classic region for the study of mud volcanism. Of the 700 mud volcanoes known in the world, 220 are in Azerbaijan. These are of great interest, not least in relation to oil and gas exploration since they give information on subsurface sediments beyond the reach of drilling. Mud volcanoes are clearly visible on satellite images. They are confined to structural lineaments and associated fractures. Changes in the morphology of some mud volcanoes post-eruption can be detected from a series of images pre-dating and post-dating eruptions. Mud volcanoes are notable for gradients of temperature that are by an order of magnitude or a factor of 102 greater than the temperature gradients established elsewhere. The gases of mud volcanoes consist mainly of methane (95-100%). There are small amounts of C{sub 2-6}, CO{sub 2}, N{sub 2}, He and Ar. The isotopic composition of carbon (ICC) within the methane varies from -61.29. to -35.W{close_quotes} which is isotopically heavier than the methane from producing fields. The ICC of the CO{sub 2} has a very wide range (from -49.6% to +23.1%), indicating several sources of its formation. The isotopically superheavy CO{sub 2} (+5%) is especially interesting. Oils from mud volcanoes are typically severely biodegraded. Their ICC ranges from -24.76% to -28.2%. A relationship between {partial_derivative}{sup l3}C of oils and ages of accumulations has been established. Waters of mud volcanoes are lightly mineralised, containing chiefly bicarbonates and sodium. The hydrogen composition of the water is abnormally heavy. Ejected rocks from mud volcanoes range in age from Cretaceous - Pliocene. Their study suggests that deeply buried reservoirs maintain good poroperm characteristics because of relatively little catagenesis.

Guliyev, I.A.; Aliyev, A.A.; Rahmanov, R.R. [Geological Institute of the Azerbaijan academy of sciences (GIA), Baku (Azerbaijan)] [and others

1995-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Principal Types of Volcanoes | Open Energy Information  

Open Energy Info (EERE)

Volcanoes Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Principal Types of Volcanoes Abstract Abstract unavailable. Author John Watson Published U.S....

42

Center for Volcanic and Tectonic Studies: 1992--1993 annual report  

SciTech Connect (OSTI)

The annual report of the Center for Volcanic Studies (CVTS) contains a series of papers, reprints and a Master of Science thesis that review the progress made by the CVTS between October 1, 1992 and February 1, 1994. During this period CVTS staff focused on several topics that have direct relevance to volcanic hazards related to the proposed high-level nuclear waste repository at Yucca Mountain, Nevada. These topics include: (1) polygenetic/polycyclic volcanism in Crater Flat, Nevada; (2) the role of the mantle during crustal extension; (3) the detailed geology of Crater Flat, Nevada; (4) Pliocene volcanoes in the Reveille Range, south-central Nevada; (5) estimating the probability of disruption of the proposed repository by volcanic eruptions. This topic is being studied by Dr. C.H. Ho at UNLV. The report contains copies of these individual papers as they were presented in various conference proceedings.

NONE

1994-12-31T23:59:59.000Z

43

Jordan Creek Quadrangle Volcanics Ecoregion  

E-Print Network [OSTI]

Jordan Creek Quadrangle Volcanics Ecoregion 10m30m 0-3 3-6 6-20 20-40 40-65 65-110 >110 No Data Percent Slope Jordan Creek Quadrangle Volcanics Ecoregion Coastal Lowlands Ecoregion Volcanics Ecoregion VINEMAPLE GREENLEAF GLENBROOK KELLY BUTTE PITTSBURGH TOLEDO NORTH JORDAN CREEK SUNSET SPRING WARNICKE CREEK

44

Taupo's atypical arc  

Science Journals Connector (OSTI)

... many other continental arcs around the world, with andesite-dacite cone volcaaoes and relatively low geothermal heat fluxes. In sharp contrast, in the middle

Colin J. N. Wilson

1996-01-04T23:59:59.000Z

45

Magma chamber processes at Mutnovsky Volcano, Russia.  

E-Print Network [OSTI]

??This dissertation is composed of two manuscripts about the evolution of Mutnovsky Volcano in Kamchatka, Russia. Mutnovsky has been active for the past approximately 80,000… (more)

Robertson, Kelly L.

2011-01-01T23:59:59.000Z

46

Geologic evolution of the Jemez Mountains and their potential for future volcanic activity  

SciTech Connect (OSTI)

Geophysical and geochemical data and the geologic history of the Rio Grande rift and the vicinity of the Jemez Mountains are summarized to determine the probability of future volcanic activity in the Los Alamos, New Mexico area. The apparent cyclic nature of volcanism in the Jemez Mountains may be related to intermittent thermal inputs into the volcanic system beneath the region. The Jemez lineament, an alignment of late Cenozoic volcanic centers that crosses the rift near Los Alamos, has played an important role in the volcanic evolution of the Jemez Mountains. Geophysical data suggest that there is no active shallow magma body beneath the Valles caldera, though magma probably exists at about 15 km beneath this portion of the rift. The rate of volcanism in the Jemez Mountains during the last 10 million years has been 5 x 10/sup -9//km/sup 2//y. Lava or ash flows overriding Laboratory radioactive waste disposal sites would have little potential to release radionuclides to the environment. The probability of a new volcano intruding close enough to a radioactive waste disposal site to effect radionuclide release is 2 x 10/sup -7//y.

Burton, B.W.

1982-01-01T23:59:59.000Z

47

Volcanic studies at Katmai  

SciTech Connect (OSTI)

The Continental Scientific Drilling Program (CSDP) is a national effort supported by the Department of Energy, the US Geological Survey, and the National Science Foundation. One of the projects proposed for the CSDP consists of drilling a series of holes in Katmai National Park in Alaska to give a third dimension to the model of the 1912 eruption of Novarupta, and to investigate the processes of explosive volcanism and hydrothermal transport of metals (Eichelberger et al., 1988). The proposal for research drilling at Katmai states that ``the size, youth, elevated temperature, and simplicity of the Novarupta vent make it a truly unique scientific target.`` The National Park Service (NPS), which has jurisdiction, is sympathetic to aims of the study. However, NPS wishes to know whether Katmai is indeed uniquely suited to the research, and has asked the Interagency Coordinating Group to support an independent assessment of this claim. NPS suggested the National Academy of Sciences as an appropriate organization to conduct the assessment. In response, the National Research Council -- the working arm of the Academy -- established, under the aegis of its US Geodynamics Committee, a panel whose specific charge states: ``The proposed investigation at Katmai has been extensively reviewed for scientific merit by the three sponsoring and participating agencies. Thus, the scientific merit of the proposed drilling at Katmai is not at issue. The panel will review the proposal for scientific drilling at Katmai and prepare a short report addressing the specific question of the degree to which it is essential that the drilling be conducted at Katmai as opposed to volcanic areas elsewhere in the world.``

Not Available

1989-12-31T23:59:59.000Z

48

Infrared observations of eclipses of Io, its thermophysical parameters, and the thermal radiation of the Loki volcano and environs  

SciTech Connect (OSTI)

Observations of Io during eclipses by Jupiter in 1981-1984 are reported. Data obtained at 3.45-30 microns using bolometer system No. 1 on the 3-m IRTF telescope at Mauna Kea are presented in extensive tables and graphs and analyzed by means of least-squares fitting of thermophysical models to the eclipse cooling and heating curves, thermal-radiation calculations for the Io volcanoes, and comparison with Voyager data. Best fits are obtained for a model comprising (1) a bright region with a vertically inhomogeneous surface and (2) a dark vertically homogeneous region with thermal inertia only about 0.1 times that of (1). Little evidence of volcanic-flux variability during the period is found, and the majority (but not all) of the excess thermal IR radiation in the sub-Jovian hemisphere is attributed to the Loki volcano and its lava lake. 35 references.

Sinton, W.M.; Kaminski, C.

1988-08-01T23:59:59.000Z

49

Haleakala Volcano Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Haleakala Volcano Geothermal Area Haleakala Volcano Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Haleakala Volcano 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 (7) 10 References Area Overview Geothermal Area Profile Location: Hawaii Exploration Region: Hawaii Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed. Add a new Operating Power Plant

50

Origin and formation of neck in a basin landform: Examples from the Camargo volcanic field, Chihuahua (México)  

Science Journals Connector (OSTI)

The term “neck in a basin” (NIB) landform is proposed for volcanic structures characterized by nearly circular to elliptical open basins, located near the headwater of small streams or drainages, which contain small volcanic necks and/or erosion remnants of one (or more) cinder cones. NIB landforms are typically 400-1000 m in diameter and 30-100 m deep and are invariably surrounded by steep walls cut into one or more basaltic lava flows. NIB landforms lack evidence for a primary volcanogenic origin through either collapse or youthful eruptive activity. In the Pliocene portion (4 – 2 Ma) of the Plio-Quaternary Camargo volcanic field of Chihuahua (México), they are relatively numerous and are best developed at the margins of a gently sloping (3-5°) basaltic lava plateau and near major fault scarps. Mature NIB landforms have ring-like circular drainage patterns and central elevations marked by small volcanic necks and associated radial dikes intruded into basaltic scoria-fall and /or agglutinate deposits. We interpret NIB landforms to be erosional in origin. They develop where a cinder cone is surrounded by one or more sheet-like lava flows from one or more separate subsequent vents. Once eruptive activity ceases at the younger volcano(es), fluvial erosion gradually produces a ring-like drainage pattern along the contact between the lava and the older cinder cone. As a response to a marked contrast in resistance to erosion between lava flows and unconsolidated or poorly lithified pyroclastic deposits, the older cinder cone is preferentially eroded. In this manner, a ring-shaped, steep sided erosional basin, preformed by the scoria cone, is produced; eventually fluvial erosion exposes the central neck and dikes. The volume, relief, and age of the volcanic field are key factors in the formation and preservation of a NIB landform. They form in volcanic fields where lava emissions are sufficiently vigorous to engulf earlier cinder cones. Relief and associated high rates of fluvial erosion play an important role in NIB development, as demonstrated by their locations in the Camargo volcanic field. Fully developed NIB landforms are not found in Quaternary volcanic fields, probably because erosion has not had sufficient time to generate their characteristics features. NIB landforms are also absent in Miocene fields, because erosion has proceeded too far, and thus has completely removed any NIB landform that may once have existed. The Camargo volcanic field is the only major area of Pliocene intraplate eruptive activity in northern México, and the only place where NIB landforms are relatively abundant.

José Jorge Aranda-Gómez; Todd B. Housh; James F. Luhr; Cristina Noyola-Medrano; Marco Antonio Rojas-Beltrán

2010-01-01T23:59:59.000Z

51

Property:VolcanicAge | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:VolcanicAge Jump to: navigation, search Property Name VolcanicAge Property Type String Description Describes the time of the most recent volcanism by epoch, era, or period per available data. Subproperties This property has the following 7 subproperties: E East Mesa Geothermal Area G Geysers Geothermal Area L Lightning Dock Geothermal Area R Raft River Geothermal Area Roosevelt Hot Springs Geothermal Area S Salton Sea Geothermal Area Soda Lake Geothermal Area Pages using the property "VolcanicAge" Showing 19 pages using this property. A Amedee Geothermal Area + No volcanism + B Beowawe Hot Springs Geothermal Area + no volcanism + Blue Mountain Geothermal Area + no volcanism + Brady Hot Springs Geothermal Area + No volcanism +

52

DETECTING VOLCANISM ON EXTRASOLAR PLANETS  

SciTech Connect (OSTI)

The search for extrasolar rocky planets has already found the first transiting rocky super-Earth, Corot 7b, with a surface temperature that allows for magma oceans. Here, we investigate whether we could distinguish rocky planets with recent major volcanism by remote observation. We develop a model for volcanic eruptions on an Earth-like exoplanet based on the present-day Earth and derive the observable features in emergent and transmission spectra for multiple scenarios of gas distribution and cloud cover. We calculate the observation time needed to detect explosive volcanism on exoplanets in primary as well as secondary eclipse and discuss the likelihood of observing volcanism on transiting Earth-sized to super-Earth-sized exoplanets. We find that sulfur dioxide from large explosive eruptions does present a spectral signal that is remotely detectable especially for secondary eclipse measurements around the closest stars and ground-based telescopes, and report the frequency and magnitude of the expected signatures. The transit probability of a planet in the habitable zone decreases with distance from the host star, making small, nearby host stars the best targets.

Kaltenegger, L.; Sasselov, D. D. [Harvard University, 60 Garden Street, Cambridge, MA 02138 (United States); Henning, W. G., E-mail: lkaltene@cfa.harvard.ed [Harvard University, EPS, 20 Oxford Street, Cambridge, MA 02138 (United States)

2010-11-15T23:59:59.000Z

53

An evaluation of the geothermal potential of the Tecuamburro Volcano area of Guatemala  

SciTech Connect (OSTI)

Radiometric ages indicate that the Tecuamburro Volcano and three adjacent lava domes grew during the last 38,300 years, and that a 360-m-wide phreatic crater, Laguna Ixpaco, was formed near the base of these domes about 2900 years ago. Laguna Ixpaco is located within the Chupadero crater, from which pyroxene pumice deposits were erupted 38,300 years ago. Thus, the likelihood is great for a partly molten or solid-but-still-hot near-surface intrusion beneath the area. Fumaroles and hot springs issue locally from the Tecuamburro volcanic complex and near Laguna Ixpaco. Analyses of gas and fluid samples from these and other nearby thermal manifestations yield chemical-geothermometer temperatures of about 150{degree} to 300{degree}C, with the highest temperatures at Ixpaco. The existence of a commercial-grade geothermal reservoir beneath the Ixpaco area seems likely. 84 refs., 70 figs., 12 tabs.

Heiken, G.; Duffield, W. (eds.)

1990-09-01T23:59:59.000Z

54

Mudpots, Mud Pools, or Mud Volcanoes | Open Energy Information  

Open Energy Info (EERE)

Mudpots, Mud Pools, or Mud Volcanoes Mudpots, Mud Pools, or Mud Volcanoes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Mudpots, Mud Pools, or Mud Volcanoes Dictionary.png Mudpots, Mud Pools, or Mud Volcanoes: A kind of hot spring or fumarole with limited water causing a bubbling pool with a consistency of mud or clay. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Mudpot in Yellowstone National Park(reference: nps.gov) Mudpots and mud pools are actually hot springs or fumaroles with limited amounts of water but a lot of clay from surrounding rock and soil causing a boiling slurry. Not to be confused with mud volcanoes, which are the

55

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands,  

Open Energy Info (EERE)

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Italy) Revealed By Geophysical And Geochemical Approaches- Implications For General Fluid Flow Models On Volcanoes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Italy) Revealed By Geophysical And Geochemical Approaches- Implications For General Fluid Flow Models On Volcanoes Details Activities (0) Areas (0) Regions (0) Abstract: On March 15th 2007 a paroxysmal explosion occurred at the Stromboli volcano. This event generated a large amount of products, mostly lithic blocks, some of which impacted the ground as far as down to 200 m a.s.l., about 1.5 km far away from the active vents. Two days after the

56

Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Mercury Vapor Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one

57

Geothermometry At Haleakala Volcano Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Geothermometry At Haleakala Volcano Area (Thomas, 1986) Geothermometry At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Geothermometry Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one

58

Seismic characterization of the fall 2007 eruptive sequence at Bezymianny Volcano, Russia  

E-Print Network [OSTI]

Seismic characterization of the fall 2007 eruptive sequence at Bezymianny Volcano, Russia Weston of Geophysical Services, Russian Academy of Sciences, Petropavlosk, Russia d Cascade Volcano Observatory, United

West, Michael

59

Hydrochemical features of a geothermal test well iin a volcanic caldera, MT. Pinatubo, Phillipines  

SciTech Connect (OSTI)

Mt. Pinatubo is one of several recent-age volcanoes along the west Luzon volcanic arc. A fumarole near the suminit emits gases with magmatic characteristics. Several thermal springs on the east and west flanks yield various fluid typos, including neutral chloride and bicarbonate. Three wellbores probed the Mt. Pinatubo caldera from elevations of +1230 through -1600 mRSL. Trajectories may be described as: central, crossing a boundary wall from the inside, and skirting a wall [probably] on the inside. Brine discharges indicate severe evapo-concentration effects accompanied by other phenomena. Severity of evapo-concentration indicates low fluid mobility near the wellbores. Large variations for ratios of component concentrations were observed, indicating negligible natural circulation (mixing). Implications about fluid movements and heat transfer processes are explored. Three components of steam can be quantified and all are significant: separate entry, adiabatic boiling, and boiling by rock heat.

Michels, D.E.; Clemente, V.C.; Ramos, M.N.

1991-01-01T23:59:59.000Z

60

New geochemical insights into volcanic degassing  

Science Journals Connector (OSTI)

...It is clear that, as well as measuring gas emissions...Journal of Volcanology and Geothermal Research. Scientific...eruptions. J. Volcanol. Geothermal Res. 134, 77-107...Popocatepetl Volcano, Mexico, from olivine-hosted...analysis. J. Volcanol. Geothermal Res. 108, 11-31...

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Alaska Plans Geothermal Leasing at Volcano | Department of Energy  

Office of Environmental Management (EM)

at Volcano June 26, 2008 - 4:19pm Addthis ANCHORAGE, Alaska - In Alaska, a state rich in oil and gas, officials are seeking to stir interest in a different source of underground...

62

Newberry Volcano EGS Demonstration Stimulation Modeling  

SciTech Connect (OSTI)

As a part of Phase I of the Newberry Volcano EGS Demonstration project, several data sets were collected to characterize the rock volume around the well. Fracture, fault, stress, and seismicity data has been collected by borehole televiewer, LiDAR elevation maps, and microseismic monitoring. Well logs and cuttings from the target well (NWG 55-29) and core from a nearby core hole (USGS N-2) have been analyzed to develop geothermal, geochemical, mineralogical and strength models of the rock matrix, altered zones, and fracture fillings (see Osborn et al., this volume). These characterization data sets provide inputs to models used to plan and predict EGS reservoir creation and productivity. One model used is AltaStim, a stochastic fracture and flow software model developed by AltaRock. The software's purpose is to model and visualize EGS stimulation scenarios and provide guidance for final planning. The process of creating an AltaStim model requires synthesis of geologic observations at the well, the modeled stress conditions, and the stimulation plan. Any geomechanical model of an EGS stimulation will require many assumptions and unknowns; thus, the model developed here should not be considered a definitive prediction, but a plausible outcome given reasonable assumptions. AltaStim is a tool for understanding the effect of known constraints, assumptions, and conceptual models on plausible outcomes.

Trenton T. Cladouhos, Matthew Clyne, Maisie Nichols,; Susan Petty, William L. Osborn, Laura Nofziger

2011-10-23T23:59:59.000Z

63

TESTING MODELS FOR BASALTIC VOLCANISM: IMPLICATIONS FOR YUCCA MOUNTAIN, NEVADA  

E-Print Network [OSTI]

TESTING MODELS FOR BASALTIC VOLCANISM: IMPLICATIONS FOR YUCCA MOUNTAIN, NEVADA Eugene Smith 1 The determination of volcanic risk to the proposed high- level nuclear waste repository at Yucca Mountain requires, then volcanism in the future may not be a significant threat to Yucca Mountain. On the other hand, if melting

Conrad, Clint

64

The effect of edifice load on magma ascent beneath a volcano  

Science Journals Connector (OSTI)

...2000) The e ect of edi ce load on magma ascent beneath a volcano...May. Petrological and isotopic data also indicate magma arrest at...2000) The e ect of edi ce load on magma ascent beneath a volcano...2000) The e ect of edi ce load on magma ascent beneath a volcano...

2000-01-01T23:59:59.000Z

65

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES,  

E-Print Network [OSTI]

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES and July 1973 at Shrub and Upper Klawasi mud volcanoes 8 ii #12;HYDROTHERMAL ACTIVITY AND CARBON. Map of diffuse carbon dioxide flow from soils near the summit of Shrub mud volcano 9 TABLES 1

66

The Utilisation of Volcanic Steam in Italy  

Science Journals Connector (OSTI)

... exploitation of natural resources; and the welkin is still ringing with cries of “increase production,”“back to the land,” and “keep the home-fires burning.” Examples ... definite and successful effort been made in this direction, namely, by utilising the natural steam which emerges from the earth in volcanic districts. The jets of ...

1924-01-12T23:59:59.000Z

67

A Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural  

Open Energy Info (EERE)

Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural And Thermal Implications Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural And Thermal Implications Details Activities (2) Areas (1) Regions (0) Abstract: Ratios of 87Sr/86Sr were determined in twenty-seven basaltic rocks from Newberry. These ratios range from 0.70330 to 0.70414; most fall between 0.7035 and 0.7038. Covariance of Al2O3/FeO* ratio, TiO2 content, and Th content with 87Sr/86Sr suggests that some isotopic ratios reflect shallow crustal contamination, but the data also suggest that two mantle sources, a prominent one at 0.7036 and a less-prominent one at 0.7033 or less, are represented. The hypothesis of crustal contamination is supported

68

Newberry Volcano EGS Demonstration Geothermal Project | Open Energy  

Open Energy Info (EERE)

Volcano EGS Demonstration Geothermal Project Volcano EGS Demonstration Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Newberry Volcano EGS Demonstration Project Type / Topic 1 Recovery Act: Enhanced Geothermal System Demonstrations Project Type / Topic 2 EGS Demonstration Project Description The project will demonstrate EGS power generation from the Newberry Known Geothermal Resource Area ("Newberry"). Four deep, high temperature, very low permeability, production-size wells have been completed at Newberry, including two currently owned by Davenport. The Newberry project site exemplifies unparalleled EGS potential in the United States, with a large, high-temperature, conductive thermal anomaly yielding wells with permeability orders of magnitude less than conventional hydrothermal wells.

69

Time-Domain Electromagnetics At Haleakala Volcano Area (Thomas, 1986) |  

Open Energy Info (EERE)

Time-Domain Electromagnetics At Haleakala Volcano Time-Domain Electromagnetics At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Time-Domain Electromagnetics Activity Date Usefulness useful DOE-funding Unknown Notes Controlled-source electromagnetic soundings were found to be substantially more successful in the southwest rift than either the Schlumberger or the self-potential studies. This was largely due to the ability of time-domain methods to penetrate high-resistivity surface layers and thus to define lower-resistivity sections at depth. The results of this sounding study, which was conducted at elevations ranging from 75 to 497 m a.s.l., generally indicated moderate- to lowresistivity (6 - 7 ohm.m) sections to depths of 1 km on the lower rift zone and higher resistivities (12-16

70

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

71

Definition: Mudpots, Mud Pools, or Mud Volcanoes | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Mudpots, Mud Pools, or Mud Volcanoes Jump to: navigation, search Dictionary.png Mudpots, Mud Pools, or Mud Volcanoes A kind of hot spring or fumarole with limited water causing a bubbling pool with a consistency of mud or clay. View on Wikipedia Wikipedia Definition A mudpot - or mud pool - is a sort of acidic hot spring, or fumarole, with limited water. It usually takes the form of a pool of bubbling mud. The acid and microorganisms decompose surrounding rock into clay and mud. 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:Mudpots,_Mud_Pools,_or_Mud_Volcanoes&oldid=684824" Category:

72

Atmospheric chemistry of a 3334 hour old volcanic cloud from Hekla Volcano (Iceland): Insights from direct sampling  

E-Print Network [OSTI]

trihydrate (NAT), sulfuric acid tetrahydrate (SAT), and liquid ternary solution H2SO4/H2O/HNO3 (STS period of daylight, consistent with the very low levels of ozone observed. This combination

Rose, William I.

73

Source of the great A.D. 1257 mystery eruption unveiled, Samalas volcano, Rinjani Volcanic Complex, Indonesia  

Science Journals Connector (OSTI)

...cold summer with incessant rains, associated with devastating floods and poor harvests (10). The interhemispheric transport of tephra and sulfate suggests...shook the Earth, stranded in Leneng (Lenek), dragged by the boulder flows, People escaped and some of them climbed the hills...

Franck Lavigne; Jean-Philippe Degeai; Jean-Christophe Komorowski; Sébastien Guillet; Vincent Robert; Pierre Lahitte; Clive Oppenheimer; Markus Stoffel; Céline M. Vidal; Surono; Indyo Pratomo; Patrick Wassmer; Irka Hajdas; Danang Sri Hadmoko; Edouard de Belizal

2013-01-01T23:59:59.000Z

74

Validation of Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled and seismic test 2012  

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

Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled & seismic test, 2012

Jaffe, Todd

75

14 | Coordinates November 2009 Many of the world's volcanoes that  

E-Print Network [OSTI]

of technical complexity and power consumption), precludes the exclusive need to build expensive carrier phase for enhanced risk assessment and early warning of volcanic eruptions. In architectural terms the monitoring

76

NASA maps volcano's 4000-mile-long SO2 cloud  

Science Journals Connector (OSTI)

NASA maps volcano's 4000-mile-long SO2 cloud ... The S02 was mapped on June 18 by the Total Ozone Mapping Spectrometer, an instrument aboard NASA's NIMBUS-7 satellite that has been measuring ozone levels and monitoring S02 since 1978. ...

1991-07-01T23:59:59.000Z

77

The sun, volcanoes, computers and the foundations of  

E-Print Network [OSTI]

The sun, volcanoes, computers and the foundations of palaeoclimate Steven J. Phipps Climate Change­374, 2000 #12;Climatic Change, 45, 361­374, 2000 #12;Extreme weather events of 535­536 CE · The sun was dark the Syrian · During this year [536 CE] a most dread portent took place. For the sun gave forth its light

Phipps, Steven J.

78

Volcanic ash impacts on critical infrastructure  

Science Journals Connector (OSTI)

Volcanic eruptions can produce a wide range of hazards. Although phenomena such as pyroclastic flows and surges, sector collapses, lahars and ballistic blocks are the most destructive and dangerous, volcanic ash is by far the most widely distributed eruption product. Although ash falls rarely endanger human life directly, threats to public health and disruption to critical infrastructure services, aviation and primary production can lead to significant societal impacts. Even relatively small eruptions can cause widespread disruption, damage and economic loss. Volcanic eruptions are, in general, infrequent and somewhat exotic occurrences, and consequently in many parts of the world, the management of critical infrastructure during volcanic crises can be improved with greater knowledge of the likely impacts. This article presents an overview of volcanic ash impacts on critical infrastructure, other than aviation and fuel supply, illustrated by findings from impact assessment reconnaissance trips carried out to a wide range of locations worldwide by our international research group and local collaborators. ‘Critical infrastructure’ includes those assets, frequently taken for granted, which are essential for the functioning of a society and economy. Electricity networks are very vulnerable to disruption from volcanic ash falls. This is particularly the case when fine ash is erupted because it has a greater tendency to adhere to line and substation insulators, where it can cause flashover (unintended electrical discharge) which can in turn cause widespread and disruptive outages. Weather conditions are a major determinant of flashover risk. Dry ash is not conductive, and heavy rain will wash ash from insulators, but light rain/mist will mobilise readily-soluble salts on the surface of the ash grains and lower the ash layer’s resistivity. Wet ash is also heavier than dry ash, increasing the risk of line breakage or tower/pole collapse. Particular issues for water supply managers include: monitoring turbidity levels in raw water intakes, and if necessary increasing chlorination to compensate for higher turbidity; managing water demand; and communicating monitoring results with the public to allay fears of contamination. Ash can cause major damage to wastewater disposal systems. Ash deposited onto impervious surfaces such as roads and car parks is very easily washed into storm drains, where it can form intractable masses and lead to long-term flooding problems. It can also enter wastewater treatment plants (WWTPs), both through sewer lines and by direct fallout. Damage to modern \\{WWTPs\\} can run into millions of dollars. Ash falls reduce visibility creating hazards for ground transportation. Dry ash is also readily remobilised by vehicle traffic and wind, and dry and wet ash deposits will reduce traction on paved surfaces, including airport runways. Ash cleanup from road and airports is commonly necessary, but the large volumes make it logistically challenging. Vehicles are vulnerable to ash; it will clog filters and brake systems and abrade moving parts within engines. Lastly, modern telecommunications networks appear to be relatively resilient to volcanic ash fall. Signal attenuation and interference during ash falls has not been reported in eruptions over the past 20 years, with the exception of interference from ash plume-generated lightning. However, some telecommunications equipment is vulnerable to airborne ash, in particular heating, ventilation and air-conditioning (HVAC) systems which may become blocked from ash ingestion leading to overheating. This summary of volcanic ash impacts on critical infrastructure provides insight into the relative vulnerability of infrastructure under a range of different ashfall scenarios. Identifying and quantifying these impacts is an essential step in building resilience within these critical systems. We have attempted to consider interdependencies between sectors in a holistic way using systems thinking. As modern society becomes increasingly complex and interdependent this

Thomas M. Wilson; Carol Stewart; Victoria Sword-Daniels; Graham S. Leonard; David M. Johnston; Jim W. Cole; Johnny Wardman; Grant Wilson; Scott T. Barnard

2012-01-01T23:59:59.000Z

79

Data Acquisition-Manipulation At Lassen Volcanic National Park Geothermal  

Open Energy Info (EERE)

Volcanic National Park Geothermal Volcanic National Park Geothermal Area (1982) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Data Acquisition-Manipulation At Lassen Volcanic National Park Geothermal Area (1982) Exploration Activity Details Location Lassen Volcanic National Park Geothermal Area Exploration Technique Data Acquisition-Manipulation Activity Date 1982 Usefulness useful DOE-funding Unknown Exploration Basis Develop parameters to identify geothermal region Notes Statistical methods are outlined to separate spatially, temporally, and magnitude-dependent portions of both the random and non-random components of the seismicity. The methodology employed compares the seismicity distributions with a generalized Poisson distribution. Temporally related

80

Mercury Vapor At Lassen Volcanic National Park Area (Varekamp...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Lassen Volcanic National Park Area (Varekamp & Buseck, 1983) Exploration...

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Temporal Relations of Volcanism and Hydrothermal Systems in Two...  

Open Energy Info (EERE)

with current hot-spring activity and the youngest pulses of volcanism. > Oxygen-isotope data from illitesmectite clays in the Cochiti district are zonally distributed and...

82

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone...  

Open Energy Info (EERE)

Caldera Geothermal Region Retrieved from "http:en.openei.orgwindex.php?titleHigh-ResolutionAeromagneticMappingOfVolcanicTerrain,YellowstoneNationalPark&oldid...

83

Geothermometry At Lassen Volcanic National Park Area (Thompson...  

Open Energy Info (EERE)

Usefulness not indicated DOE-funding Unknown References J. Michael Thompson (1985) Chemistry Of Thermal And Nonthermal Springs In The Vicinity Of Lassen Volcanic National Park...

84

Compound and Elemental Analysis At Lassen Volcanic National Park...  

Open Energy Info (EERE)

Usefulness not indicated DOE-funding Unknown References J. Michael Thompson (1985) Chemistry Of Thermal And Nonthermal Springs In The Vicinity Of Lassen Volcanic National Park...

85

A Miocene Island-Arc Volcanic Seamount- The Takashibiyama Formation...  

Open Energy Info (EERE)

Island-Arc Volcanic Seamount- The Takashibiyama Formation, Shimane Peninsula, Sw Japan Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: A...

86

Basaltic volcanic episodes of the Yucca Mountain region  

SciTech Connect (OSTI)

The purpose of this paper is to summarize briefly the distribution and geologic characteristics of basaltic volcanism in the Yucca Mountain region during the last 10--12 Ma. This interval largely postdates the major period of silicic volcanism and coincides with and postdates the timing of major extensional faulting in the region. Field and geochronologic data for the basaltic rocks define two distinct episodes. The patterns in the volume and spatial distribution of these basaltic volcanic episodes in the central and southern part of the SNVF are used as a basis for forecasting potential future volcanic activity in vicinity of Yucca Mountain. 33 refs., 2 figs.

Crowe, B.M.

1990-03-01T23:59:59.000Z

87

Analysis Of Multiple Scattering At Vesuvius Volcano, Italy, Using Data Of  

Open Energy Info (EERE)

Scattering At Vesuvius Volcano, Italy, Using Data Of Scattering At Vesuvius Volcano, Italy, Using Data Of The Tomoves Active Seismic Experiment Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Analysis Of Multiple Scattering At Vesuvius Volcano, Italy, Using Data Of The Tomoves Active Seismic Experiment Details Activities (0) Areas (0) Regions (0) Abstract: Data from the TomoVes active seismic experiment are used to study scattering effects in the shallow heterogeneous structure of Vesuvius volcano. Seismograms from shots located on the volcano itself are characterised by spindle-like envelopes, small or missing P-onsets, missing S-onsets, and long codas. Seismograms from shots in the surroundings of the volcano, on the contrary, show clear and impulsive P- and S-onsets and short codas. The different shapes of the envelopes can be explained by

88

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano,  

Open Energy Info (EERE)

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library == A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, HawaiiThesis/Dissertation == Author Catherine King Skokan Organization Colorado School of Mines Published Publisher Not Provided, 1974 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii Citation [[Citation::Catherine King Skokan. 1974. A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii []. [ (!) ]: Colorado School of Mines.]] Retrieved from "http://en.openei.org/w/index.php?title=A_Time-Domain_Electromagnetic_Survey_of_the_East_Rift_Zone_Kilauea_Volcano,_Hawaii&oldid=682585"

89

Summary of Pu u O o - Kupaianaha Eruption, Kilauea Volcano, Hawaii | Open  

Open Energy Info (EERE)

Summary of Pu u O o - Kupaianaha Eruption, Kilauea Volcano, Hawaii Summary of Pu u O o - Kupaianaha Eruption, Kilauea Volcano, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Summary of Pu_u _O_o - Kupaianaha Eruption, Kilauea Volcano, Hawaii Published USGS, Date Not Provided DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Summary of Pu_u _O_o - Kupaianaha Eruption, Kilauea Volcano, Hawaii Citation Summary of Pu_u _O_o - Kupaianaha Eruption, Kilauea Volcano, Hawaii [Internet]. 2012. USGS. [cited 06/26/2013]. Available from: http://hvo.wr.usgs.gov/kilauea/summary/ Retrieved from "http://en.openei.org/w/index.php?title=Summary_of_Pu_u_O_o_-_Kupaianaha_Eruption,_Kilauea_Volcano,_Hawaii&oldid=682513" Categories: References Uncited References

90

Seismic Hazards at Kilauea and Mauna LOA Volcanoes, Hawaii  

SciTech Connect (OSTI)

A significant seismic hazard exists in south Hawaii from large tectonic earthquakes that can reach magnitude 8 and intensity XII. This paper quantifies the hazard by estimating the horizontal peak ground acceleration (PGA) in south Hawaii which occurs with a 90% probability of not being exceeded during exposure times from 10 to 250 years. The largest earthquakes occur beneath active, unbuttressed and mobile flanks of volcanoes in their shield building stage.

Klein, Fred W.

1994-04-22T23:59:59.000Z

91

Gas Flux Sampling At Haleakala Volcano Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Gas Flux Sampling At Haleakala Volcano Area (Thomas, 1986) Gas Flux Sampling At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Gas Flux Sampling Activity Date Usefulness useful DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one

92

E-Print Network 3.0 - avacha volcano kamchatka Sample Search...  

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

calderas, large explosive craters and active volcanoes in the Kuril-Kamchatka region, Russia, Bulletin... Natural Hazards and Earth System Sciences Historical and paleo-tsunami...

93

E-Print Network 3.0 - aster volcano archive Sample Search Results  

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

and mapping with data from NASA's Earth Observing System Summary: -temporal, multi-spatial data fusion capabilities of ASTER for Soufriere Hills Volcano, Montserrat. False...

94

E-Print Network 3.0 - active volcanic features Sample Search...  

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

enormous Jurassic--Cretaceous volcanic activity, CretaceousJurassicPermian andesite Permian metasediment... of Mesozoic volcanic rocks in the Songliao basin, NE China PU-JUN...

95

An energy appraisal of volcanic and hydrothermal phenomena (on the example of Kamchatka)  

Science Journals Connector (OSTI)

Such areas of active volcanicity may be regarded as positive geothermic anomalies on a planetary scale. This conclusion ... magmatism (volcanism), metamorphism and other « energy capacious » processes in various ...

B. G. Polak

1967-01-01T23:59:59.000Z

96

E-Print Network 3.0 - altered volcanic ash Sample Search Results  

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

Summary: when hot ash flows enter the sea. Volcanic activity was practically absent on Gran Canaria between 9... expected the Slump scarp Subaerial volcanics Sealevel Distal...

97

Multiple Ruptures For Long Valley Microearthquakes- A Link To Volcanic  

Open Energy Info (EERE)

Multiple Ruptures For Long Valley Microearthquakes- A Link To Volcanic Multiple Ruptures For Long Valley Microearthquakes- A Link To Volcanic Tremor(Question) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Multiple Ruptures For Long Valley Microearthquakes- A Link To Volcanic Tremor(Question) Details Activities (1) Areas (1) Regions (0) Abstract: Despite several episodes of ground deformation and intense seismic activity starting in 1978, the Long Valley, California, volcanic area has not produced clearly recognized volcanic tremor. Instead, a variety of atypical microearthquakes have been recorded during these episodes, including events dominated by low-frequency (long-period) or mixed high and low-frequency (hybrid) signals. During a 1997 episode, a number of unusual microearthquakes occurred within a temporary 40-station

98

Diachroneity of Basin and Range Extension and Yellowstone Hotspot Volcanism  

Open Energy Info (EERE)

Diachroneity of Basin and Range Extension and Yellowstone Hotspot Volcanism Diachroneity of Basin and Range Extension and Yellowstone Hotspot Volcanism in Northwestern Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Diachroneity of Basin and Range Extension and Yellowstone Hotspot Volcanism in Northwestern Nevada Abstract Some of the earliest volcanic rocks attributed to the Yellowstone hotspot erupted from the McDermitt caldera and related volcanic centers in northwestern Nevada at 17-15 Ma. At that time, extensional faulting was ongoing to the south in central Nevada, leading some to suggest that the nascent hotspot caused or facilitated middle Miocene Basin and Range extension. Regional geologic relationships indicate that the total magnitude of extension in northwestern Nevada is low compared to the amount

99

A Distinction Technique Between Volcanic And Tectonic Depression Structures  

Open Energy Info (EERE)

Distinction Technique Between Volcanic And Tectonic Depression Structures Distinction Technique Between Volcanic And Tectonic Depression Structures Based On The Restoration Modeling Of Gravity Anomaly- A Case Study Of The Hohi Volcanic Zone, Central Kyushu, Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Distinction Technique Between Volcanic And Tectonic Depression Structures Based On The Restoration Modeling Of Gravity Anomaly- A Case Study Of The Hohi Volcanic Zone, Central Kyushu, Japan Details Activities (0) Areas (0) Regions (0) Abstract: In this study, we propose a numerical modeling technique which restores the gravity anomaly of tectonic origin and identifies the gravity low of caldera origin. The identification is performed just by comparing the restored gravity anomalies with the observed gravity anomalies, thus we

100

Overview Of Electromagnetic Methods Applied In Active Volcanic Areas Of  

Open Energy Info (EERE)

Of Electromagnetic Methods Applied In Active Volcanic Areas Of Of Electromagnetic Methods Applied In Active Volcanic Areas Of Western United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Overview Of Electromagnetic Methods Applied In Active Volcanic Areas Of Western United States Details Activities (7) Areas (2) Regions (0) Abstract: A better understanding of active volcanic areas in the United States through electromagnetic geophysical studies received foundation from the many surveys done for geothermal exploration in the 1970's. Investigations by governmental, industrial, and academic agencies include (but are not limited to) mapping of the Cascades. Long Valley/Mono area, the Jemez volcanic field, Yellowstone Park, and an area in Colorado. For one example - Mt. Konocti in the Mayacamas Mountains, California - gravity,

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone  

Open Energy Info (EERE)

High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone National Park Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: High-Resolution Aeromagnetic Mapping Of Volcanic Terrain, Yellowstone National Park Details Activities (1) Areas (1) Regions (0) Abstract: High-resolution aeromagnetic data acquired over Yellowstone National Park (YNP) show contrasting patterns reflecting differences in rock composition, types and degree of alteration, and crustal structures that mirror the variable geology of the Yellowstone Plateau. The older, Eocene, Absaroka Volcanic Supergroup, a series of mostly altered, andesitic volcanic and volcaniclastic rocks partially exposed in mountains on the eastern margin of YNP, produces high-amplitude, positive magnetic

102

Type B: Andesitic Volcanic Resource | 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 » Type B: Andesitic Volcanic Resource Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Type B: Andesitic Volcanic Resource Dictionary.png Type B: Andesitic Volcanic Resource: No definition has been provided for this term. Add a Definition Brophy Occurrence Models This classification scheme was developed by Brophy, as reported in Updating the Classification of Geothermal Resources.[1] Type A: Magma-heated, Dry Steam Resource Type B: Andesitic Volcanic Resource Type C: Caldera Resource Type D: Sedimentary-hosted, Volcanic-related Resource Type E: Extensional Tectonic, Fault-Controlled Resource

103

LATE QUATERNARY GLACIATION OF THE ERCIYES VOLCANO, CENTRAL TURKEY  

E-Print Network [OSTI]

are also observed. 4. Kirkpinar Valley, situated to the west of Aksu Valley, is covered by a northwest of the Cappado- cian Volcanic Province. It is characterized by four valleys and one ridge that contain a small glacier and Late Quater- nary glacial deposits on its flanks. 1. Aksu Valley is a northwest trending U

Zreda, Marek

104

Structural stability of andesite volcanoes and lava domes  

Science Journals Connector (OSTI)

...is an essential tool in assisting the...modelling of volcanic systems must be very di...Slope hazards assessment diagram posted...in hydrothermal systems occupying the...frequent summit steam explosions and...of pressurized steam, suddenly released...Monitoring and Warning System The following...

2000-01-01T23:59:59.000Z

105

Dynamics of carbon dioxide emissions, crystallization, and magma ascent: hypotheses, theory, and applications to volcano monitoring at Mount St. Helens  

Science Journals Connector (OSTI)

?Measurements of CO2 fluxes from open-vent volcanos are rare, yet may offer special capabilities for monitoring volcanos and forecasting activity. The measured fluxes of CO2 and SO2 from Mount St. Helens decrease...

David M. Harris; William I. Rose

1996-09-01T23:59:59.000Z

106

Validation of Innovative Exploration Technologies for Newberry Volcano: Seismic data - raw taken by Apex Hipoint for 1st test 2012  

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

Validation of Innovative Exploration Technologies for Newberry Volcano: Seismic data - raw taken by Apex Hipoint for 1st test 2012

Jaffe, Todd

107

Validation of Innovative Exploration Technologies for Newberry Volcano: Raw data used to prepare the Gravity Report by Zonge 2012  

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

Validation of Innovative Exploration Technologies for Newberry Volcano: Raw data used to prepare the Gravity Report by Zonge 2012

Jaffe, Todd

108

Submarine venting of liquid carbon dioxide on a Mariana Arc volcano  

E-Print Network [OSTI]

Submarine venting of liquid carbon dioxide on a Mariana Arc volcano John Lupton NOAA/Pacific Marine hydrothermal fluids, it is rarely found in the form of CO2 liquid. Here we report the discovery of an unusual CO2-rich hydrothermal system at 1600-m depth near the summit of NW Eifuku, a small submarine volcano

Chadwick, Bill

109

Blind Geothermal System Exploration in Active Volcanic Environments;  

Open Energy Info (EERE)

System Exploration in Active Volcanic Environments; System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt and Subtle Volcanic Systems, Hawaii and Maui Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt and Subtle Volcanic Systems, Hawai'i and Maui Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Validation of Innovative Exploration Technologies Project Description The project will perform a suite of stepped geophysical and geochemical surveys and syntheses at both a known, active volcanic system at Puna, Hawai'i and a blind geothermal system in Maui, Hawai'i. Established geophysical and geochemical techniques for geothermal exploration including gravity, major cations/anions and gas analysis will be combined with atypical implementations of additional geophysics (aeromagnetics) and geochemistry (CO2 flux, 14C measurements, helium isotopes and imaging spectroscopy). Importantly, the combination of detailed CO2 flux, 14C measurements and helium isotopes will provide the ability to directly map geothermal fluid upflow as expressed at the surface. Advantageously, the similar though active volcanic and hydrothermal systems on the east flanks of Kilauea have historically been the subject of both proposed geophysical surveys and some geochemistry; the Puna Geothermal Field (Puna) (operated by Puna Geothermal Venture [PGV], an Ormat subsidiary) will be used as a standard by which to compare both geophysical and geochemical results.

110

Validation of Innovative Exploration Technologies for Newberry Volcano  

Open Energy Info (EERE)

Validation of Innovative Exploration Technologies for Newberry Volcano Validation of Innovative Exploration Technologies for Newberry Volcano Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Validation of Innovative Exploration Technologies for Newberry Volcano Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Validation of Innovative Exploration Technologies Project Description This project will implement a multi-step combination that is believed to have not been used before. This includes: identifying the geometry and the electrical resistivity associated with the pluton; locating areas of fluid movement in and around the pluton; measuring heat associated with the pluton; and looking for geochemical indications for degassing of circulating geothermal fluid. This approach applies gravity and MT surveys, although at much higher density than typically used in exploration. The plan involves using innovative patent pending, 3-D seismic geophone measurement tools developed by HiPoint Reservoir, LLC, that have not previously been used in geothermal exploration. The project also includes strategies for detecting deep degassing of geothermal fluid and using special flux measurement equipment at the temperature gradient well sites to sample for CO2 outgassing. Secondary mineral samples collected from the temperature gradient well core will be analyzed for stable carbon, oxygen and sulfur isotopes at the Southern Methodist University geochemical laboratory. X-R diffraction analyses will be used to characterize the thermal history of the cored rock. The final step will use temperature gradient data to map out the thermal characteristics across the pluton. The resulting model will be used to identify hot areas associated with the pluton that has fluid moving through fractures. One additional innovation designed into this program is multiple-use of temperature gradient drilling. The upper portion of the wells will be used for the 3-D seismic array. CO2 flux measurements will be employed during drilling of these holes, and the completed wells will provide the very valuable temperature profiles.

111

Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano,  

Open Energy Info (EERE)

Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library : Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, HawaiiInfo Graphic/Map/Chart Authors Frank A. Trusdell and Richard B. Moore Published U.S. GEOLOGICAL SURVEY, 2006 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, Hawaii Citation Frank A. Trusdell,Richard B. Moore. Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, Hawaii. []. Place of publication not provided. U.S. GEOLOGICAL SURVEY. 2006. Available from: http://pubs.usgs.gov/imap/2614/downloads/pdf/2614map_508.pdf.

112

Geothermal Literature Review At San Francisco Volcanic Field Area (Morgan,  

Open Energy Info (EERE)

Morgan, Morgan, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At San Francisco Volcanic Field Area (Morgan, Et Al., 2003) Exploration Activity Details Location San Francisco Volcanic Field Area Exploration Technique Geothermal Literature Review Activity Date Usefulness not indicated DOE-funding Unknown References Paul Morgan, Wendell Duffield, John Sass, Tracey Felger (2003) Searching For An Electrical-Grade Geothermal Resource In Northern Arizona To Help Geopower The West Retrieved from "http://en.openei.org/w/index.php?title=Geothermal_Literature_Review_At_San_Francisco_Volcanic_Field_Area_(Morgan,_Et_Al.,_2003)&oldid=510822" Category: Exploration Activities What links here

113

An Expert System For The Tectonic Characterization Of Ancient Volcanic  

Open Energy Info (EERE)

System For The Tectonic Characterization Of Ancient Volcanic System For The Tectonic Characterization Of Ancient Volcanic Rocks Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Expert System For The Tectonic Characterization Of Ancient Volcanic Rocks Details Activities (0) Areas (0) Regions (0) Abstract: The expert system approach enables geochemical evidence to be integrated with geological, petrological and mineralogical evidence in identifying the eruptive setting of ancient volcanic rocks. This paper explains the development of ESCORT, an Expert System for Characterization of Rock Types. ESCORT uses as its knowledge base a set of dispersion matrices derived from a geochemical data bank of some 8000 immobile element analyses, together with tables of magma-type membership probabilities based

114

Data Acquisition-Manipulation At San Francisco Volcanic Field Area  

Open Energy Info (EERE)

At San Francisco Volcanic Field Area At San Francisco Volcanic Field Area (Warpinski, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Data Acquisition-Manipulation At San Francisco Volcanic Field Area (Warpinski, Et Al., 2004) Exploration Activity Details Location San Francisco Volcanic Field Area Exploration Technique Data Acquisition-Manipulation Activity Date Usefulness not indicated DOE-funding Unknown Notes Northern Arizona University has re-assessed the existing exploration data, 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 potential drilling targets and sites. Further work may occur in 2004 or 2005. References

115

Geothermometry At Lassen Volcanic National Park Area (Janik & Mclaren,  

Open Energy Info (EERE)

Geothermometry At Lassen Volcanic National Park Area (Janik & Mclaren, Geothermometry At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Geothermometry Activity Date Usefulness useful DOE-funding Unknown Notes Analyses of eight well samples taken consecutively during the flow test showed an inverse correlation between NH3 and Cl_ concentrations. The last sample taken had a pH of 8.35 and contained 2100 ppm Cl_ and 0.55 ppm NH3. Ratios of Na+/K+ and Na+/Cl_ remained nearly constant throughout the flow test. Cation geothermometers (with inherent uncertainties of at least

116

Lassen Volcanic National Park Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Lassen Volcanic National Park Geothermal Area Lassen Volcanic National Park Geothermal Area (Redirected from Lassen Volcanic National Park Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Lassen Volcanic National Park 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 (11) 10 References Area Overview Geothermal Area Profile Location: California Exploration Region: Cascades GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0

117

Late Cenozoic volcanism, geochronology, and structure of the Coso Range,  

Open Energy Info (EERE)

Late Cenozoic volcanism, geochronology, and structure of the Coso Range, Late Cenozoic volcanism, geochronology, and structure of the Coso Range, Inyo County, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Late Cenozoic volcanism, geochronology, and structure of the Coso Range, Inyo County, California Details Activities (1) Areas (1) Regions (0) Abstract: The Coso Range lies at the west edge of the Great Basin, adjacent to the southern part of the Sierra Nevada. A basement complex of pre-Cenozoic plutonic and metamorphic rocks is partly buried by approx.35 km^3 of late Cenozoic volcanic rocks that were erupted during two periods, as defined by K-Ar dating: (1) 4.0--2.5 m.y., approx.31 km^3 of basalt, rhyodacite, dacite, andesite, and rhyolite, in descending order of abundance, and (2) < or =1.1 m.y., nearly equal amounts of basalt and

118

A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego  

Open Energy Info (EERE)

Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego And Mount St Helens Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego And Mount St Helens Details Activities (0) Areas (0) Regions (0) Abstract: The large amount of scientific data collected on the Mount St. Helens eruption has resulted in significant changes in thinking about the atmospheric hazards caused by explosive volcanic activity. The hazard posed by fine silicate ash with long residence time in the atmosphere is probably much less serious than previously thought. The Mount St. Helens eruption released much fine ash in the upper atmosphere. These silicates were removed very rapidly due to a process of particle aggregation (Sorem, 1982;

119

A Miocene Island-Arc Volcanic Seamount- The Takashibiyama Formation,  

Open Energy Info (EERE)

Island-Arc Volcanic Seamount- The Takashibiyama Formation, Island-Arc Volcanic Seamount- The Takashibiyama Formation, Shimane Peninsula, Sw Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Miocene Island-Arc Volcanic Seamount- The Takashibiyama Formation, Shimane Peninsula, Sw Japan Details Activities (0) Areas (0) Regions (0) Abstract: The Miocene volcanic complex of the Takashibiyama Formation consists largely of subalkali, subaqueous basalt to andesite lavas and andesite to dacite subaqueous volcaniclastic flow deposits. Most of subaqueous lavas are moderately to intensely brecciated with rugged rough surfaces and ramp structures similar to subaerial block lava. Volcaniclastic flow deposits commonly include basalt to andesite lava fragments and/or pyroclastic materials, and are similar in internal

120

Evidence For Gas And Magmatic Sources Beneath The Yellowstone Volcanic  

Open Energy Info (EERE)

Evidence For Gas And Magmatic Sources Beneath The Yellowstone Volcanic Evidence For Gas And Magmatic Sources Beneath The Yellowstone Volcanic Field From Seismic Tomographic Imaging Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Evidence For Gas And Magmatic Sources Beneath The Yellowstone Volcanic Field From Seismic Tomographic Imaging Details Activities (1) Areas (1) Regions (0) Abstract: The 3-D P-wave velocity and P- to S-wave velocity ratio structure of the Yellowstone volcanic field, Wyoming, has been determined from local earthquake tomography using new data from the permanent Yellowstone seismic network. We selected 3374 local earthquakes between 1995 and 2001 to invert for the 3-D P-wave velocity (Vp) and P-wave to S-wave velocity ratio (Vp/Vs) structure. Vp anomalies of small size (15_15 km) are reliably

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

San Juan Volcanic Field Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

San Juan Volcanic Field Geothermal Area San Juan Volcanic Field Geothermal Area (Redirected from San Juan Volcanic Field Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: San Juan Volcanic Field 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 (3) 10 References Area Overview Geothermal Area Profile Location: Colorado Exploration Region: Rio Grande Rift GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0

122

Volcanism in the western San Juan Mountains, Colorado  

Science Journals Connector (OSTI)

Three major cycles of volcanism during the Miocene and Pliocene formed a layered succession of calc-alkaline eruptive materials in the western San Juan Mountains nearly 1.5 miles thick and having a volume grea...

R. G. Luedke; W. S. Burbank

1966-01-01T23:59:59.000Z

123

The Palaeomagnetism of the Antrim Plateau Volcanics of Northern Australia  

Science Journals Connector (OSTI)

......just south of the Australian Bight from the Upper Carboniferous...1969. North Australian Plateau Volcanics...the Bonaparte Gulf Basin, Bur. Miner. Resour...palaeomagnetism of the Great Dyke of Southern...part of the Wiso Basin, Northern Territory......

M. W. McElbinny; G. R. Luck

1970-08-01T23:59:59.000Z

124

Static Temperature Survey At Lassen Volcanic National Park Area...  

Open Energy Info (EERE)

in volcanic rocks (Beall, 1981). Temperature-log profiles made 10 months after drilling completion show an abrupt temperature rise at 183 m, a maximum temperature of 176 degrees...

125

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...

126

A Distinction Technique Between Volcanic And Tectonic Depression...  

Open Energy Info (EERE)

Modeling Of Gravity Anomaly- A Case Study Of The Hohi Volcanic Zone, Central Kyushu, Japan Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: A...

127

Geoelectric Studies on the East Rift, Kilauea Volcano, Hawaii Island | Open  

Open Energy Info (EERE)

Geoelectric Studies on the East Rift, Kilauea Volcano, Hawaii Island Geoelectric Studies on the East Rift, Kilauea Volcano, Hawaii Island Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Geoelectric Studies on the East Rift, Kilauea Volcano, Hawaii Island Abstract Three geophysical research organizations, working together under the auspices of the Hawaii Geothermal Project, have used several electrical and electromagnetic exploration techniques on Kilauea volcano, Hawaii to assess its geothermal resources. This volume contains four papers detailing their methods and conclusions. Keller et al. of the Colorado School of Mines used the dipole mapping and time-domain EM sounding techniques to define low resistivity areas around the summit and flanks of Kilauea. Kauahikaua and Klein of the Hawaii Institute of Geophysics then detailed the East Rift

128

Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On  

Open Energy Info (EERE)

Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Drill Core From Soh 1 Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Drill Core From Soh 1 Details Activities (4) Areas (1) Regions (0) Abstract: Deep drilling has allowed for the first time an examination of most of the shield stage of a Hawaiian volcano when it is centered over the hotspot and most of its volume is produced. We determined the lithologies, ages, geochemical characteristics and accumulation rates of rocks from the continuously cored, ~1.7 km deep Scientific Observation Hole (SOH) 1, which was drilled into Kilauea's East Rift Zone. The uppermost ~750 m of this hole contain relatively unaltered subaerially quenched lavas; the lower

129

238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc  

Open Energy Info (EERE)

238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc Details Activities (0) Areas (0) Regions (0) Abstract: Activities of 238U decay series radioisotopes have been determined for both postcaldera basalts erupted between 1849 and 1974 and genetically related young precaldera dacites from Batur volcano, Bali, Sunda arc. All rocks possess (230Th/238U) = 1 within 2 sigma error indicating that little, if any, fractionation between Th and U occurred during their genesis, or in their source regions, within approximately the last 350 ka. Both the basaltic and the dacitic rocks possess (230Th/232U) ~

130

Preliminary results from an isotope hydrology study of the Kilauea Volcano  

Open Energy Info (EERE)

results from an isotope hydrology study of the Kilauea Volcano results from an isotope hydrology study of the Kilauea Volcano area, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Preliminary results from an isotope hydrology study of the Kilauea Volcano area, Hawaii Abstract Deuterium (D) content of groundwater and precipitation, and tritium content of selected groundwater samples are used to infer flow paths for ground water in the Kilauea volcano area. The spatial distribution of calculated recharge elevations and residence times for groundwater samples tends to support the idea that Kilauea's rift zones comprise leaky boundaries within the regional groundwater flow system, partly isolating the groundwater in the area bounded by the rift zones and the Pacific Ocean. The south wesr

131

Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano,  

Open Energy Info (EERE)

Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Details Activities (9) Areas (1) Regions (0) Abstract: A borehole has been drilled to a depth of 1262 m (4141 ft) beneath the summit of Kilauea volcano, on the island of Hawaii. The purpose was to test predictions made from surface-based geophysical surveys and seek evidence of a hydrothermal system over a known magma body. Nearly all rocks penetrated by the borehole are olivine basalt, with minor amounts of olivine diabase, picrite diabase and olivine-poor basalt. While the rocks are petrographically uniform, their physical properties vary widely from

132

Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and  

Open Energy Info (EERE)

Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and vicinity Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and vicinity Abstract Published and new data for chemical and isotopic samples from wells and springson Kilauea Volcano and vicinity are presented. These data are used to understandprocesses that determine the chemistry of dilute meteoric water, mixtures with sea water,and thermal water. Data for well and spring samples of non-thermal water indicate that mixing with sea water and dissolution of rock from weathering are the major processes that determine the composition of dissolved constituents in water. Data from coastal springs demonstrate that there is a large thermal system south of the lower

133

Geological Aspects Of The 2003-2004 Eruption Of Anatahan Volcano, Northern  

Open Energy Info (EERE)

Geological Aspects Of The 2003-2004 Eruption Of Anatahan Volcano, Northern Geological Aspects Of The 2003-2004 Eruption Of Anatahan Volcano, Northern Mariana Islands Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geological Aspects Of The 2003-2004 Eruption Of Anatahan Volcano, Northern Mariana Islands Details Activities (0) Areas (0) Regions (0) Abstract: Anatahan Volcano, Northern Mariana Islands, began erupting in May-June 2003. A series of subplinian explosive eruptions of andesite magma began at the Eastern Crater in the eastern part of the summit caldera on the evening of 10 May. Brown tephra was sent mainly westward by strong winds. Small-scale pyroclastic surges were discharged eastward outside the caldera in late May. An andesite lava dome that had once filled the inner crater was fragmented by phreatomagmatic explosions in the middle of June.

134

A Numerical Model For The Dynamics Of Pyroclastic Flows At Galeras Volcano,  

Open Energy Info (EERE)

For The Dynamics Of Pyroclastic Flows At Galeras Volcano, For The Dynamics Of Pyroclastic Flows At Galeras Volcano, Colombia Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Numerical Model For The Dynamics Of Pyroclastic Flows At Galeras Volcano, Colombia Details Activities (0) Areas (0) Regions (0) Abstract: This paper presents a two-dimensional model for dilute pyroclastic flow dynamics that uses the compressible Navier-Stokes equation coupled with the Diffusion-Convection equation to take into account sedimentation. The model is applied to one of the slopes of Galeras Volcano to show: (1) the temperature evolution with the time; (2) dynamic pressure change; and (3) particle concentration along the computer domain from the eruption to the impact with a topographic barrier located more than 16 km

135

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

136

Ensemble Modeling of Air Pollution Due to April 2010 Island Volcano Eruption  

Science Journals Connector (OSTI)

The eruption of Island volcano in April 2010 caused enormously big troubles for air transport over Europe for a long period of time. The losses and inconveniences for air companies, common business and usual pass...

Dimiter Syrakov; Maria Prodanova…

2014-01-01T23:59:59.000Z

137

FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA  

E-Print Network [OSTI]

FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA, Petropavlovsk- Kamchatsky, Russia; belousov@mail.ru. (2) - GEOMAR, Kiel, Germany. Chikurachki is a young, active

Belousov, Alexander

138

Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii...  

Open Energy Info (EERE)

History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Drill Core From SOH 1 Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Magmatic...

139

Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From  

Open Energy Info (EERE)

Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From Seismic And Gravity Data Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From Seismic And Gravity Data Details Activities (2) Areas (1) Regions (0) Abstract: Two seismic refraction surveys were carried out in 1976 and 1977 on the east rift zone of Kilauea volcano as part of an exploratory program for geothermal resources. The short traverse seismic refraction survey of January 1976 delineated the upper surface structure of the east rift, revealing velocities of 2.5 km/s under the Kalapana line and 3.1 km/s under the Leilani line beneath a surface layer of low, but variable velocity. This survey was not successful in determining the depth of the

140

San Juan Volcanic Field Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

San Juan Volcanic Field Geothermal Area San Juan Volcanic Field Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: San Juan Volcanic Field 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 (3) 10 References Area Overview Geothermal Area Profile Location: Colorado Exploration Region: Rio Grande Rift GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed. Add a new Operating Power Plant

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Lassen Volcanic National Park Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Lassen Volcanic National Park Geothermal Area Lassen Volcanic National Park Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Lassen Volcanic National Park 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 (11) 10 References Area Overview Geothermal Area Profile Location: California Exploration Region: Cascades GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed. Add a new Operating Power Plant

142

San Francisco Volcanic Field Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

San Francisco Volcanic Field Geothermal Area San Francisco Volcanic Field Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: San Francisco Volcanic Field 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 (6) 10 References Area Overview Geothermal Area Profile Location: Arizona Exploration Region: Other GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed. Add a new Operating Power Plant

143

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

144

Geochronology of Gran Canaria, Canary Islands: Age of shield building volcanism and other magmatic phases  

Science Journals Connector (OSTI)

Forty-six new K-Ar age determinations are presented on whole rock samples and mineral separates from volcanic and subvolcanic rocks of Gran Canaria. The main subaerial shield building basaltic volcanism...3 was c...

I. McDougall; H. -U. Schmincke

1976-01-01T23:59:59.000Z

145

Integrating retrievals of volcanic cloud characteristics from satellite remote sensors: a summary  

Science Journals Connector (OSTI)

...pressure using the Ca, H and K lines in the solar spectrum. Future designs of TOMS instruments...and Colima volcanoes, Costa Rica and Mexico: February 1982. J. Geophys. Res...eruptions of El Chichon Volcano (Chiapas, Mexico): character of the eruptions, ashfall...

2000-01-01T23:59:59.000Z

146

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

147

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

148

Volcanism of the Kenya Rift Valley [and Discussion  

Science Journals Connector (OSTI)

...research-article Volcanism of the Kenya Rift Valley [and Discussion] B. C. King G. R...Robson R. B. McConnell The Kenya rift valley is a sector of the rift system of eastern...distances of 200 km or more both to the west and east and is broadly centred on the...

1972-01-01T23:59:59.000Z

149

Hydroacoustic detection of volcanic ocean-island earthquakes  

Science Journals Connector (OSTI)

......The finite difference grid is 7 110 km with a mesh...significant seismic monitoring infrastructure to new onsets of volcanism...regional monitoring infrastructure. Acknowledgments...Acoustic Modelling on a Grid of Vertically Varying...Talandier J.,1998. Hybrid numerical modelling......

George Helffrich; Sandra I. N. Heleno; Bruno Faria; João F. B. D. Fonseca

2006-12-01T23:59:59.000Z

150

Account of a New Volcanic Island in the Pacific Ocean  

Science Journals Connector (OSTI)

1 January 1886 research-article Account of a New Volcanic Island in the Pacific Ocean Wilfred Rowell The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. www.jstor.org

1886-01-01T23:59:59.000Z

151

Visualizing the Aftermath of Volcanic Eruptions Tobias Gunther  

E-Print Network [OSTI]

of Magdeburg ABSTRACT Volcanic eruptions are not only hazardous in the vicinity of a vol- cano, but also affect to reconstruct and assess the movement of ash clouds. In particular, we shed light on the Gr´imsv¨otn, Puyehue or temperature. Combining individual satellite data into one visual- ization also allows to locate and judge

152

Type D: Sedimentary-hosted, Volcanic-related Resource | Open Energy  

Open Energy Info (EERE)

D: Sedimentary-hosted, Volcanic-related Resource D: Sedimentary-hosted, Volcanic-related Resource Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Type D: Sedimentary-hosted, Volcanic-related Resource Dictionary.png Type D: Sedimentary-hosted, Volcanic-related Resource: No definition has been provided for this term. Add a Definition Brophy Occurrence Models This classification scheme was developed by Brophy, as reported in Updating the Classification of Geothermal Resources. Type A: Magma-heated, Dry Steam Resource Type B: Andesitic Volcanic Resource Type C: Caldera Resource Type D: Sedimentary-hosted, Volcanic-related Resource Type E: Extensional Tectonic, Fault-Controlled Resource Type F: Oceanic-ridge, Basaltic Resource Sedimentary-hosted volcanic-related resources are special in that the

153

Self-potential distribution on active volcano controlled by three-dimensional resistivity structure in Izu-Oshima, Japan  

Science Journals Connector (OSTI)

......used to calculate the electric potential distribution...Ueda A., 1993. Discharge model of fumarolic gases...2003. The volcano-electric effect, J. geophys...by high-resolution electric resistivity tomography...volcano, Izu-Bonin arc, Japan: a preliminary......

Shin'ya Onizawa; Nobuo Matsushima; Tsuneo Ishido; Hideaki Hase; Shinichi Takakura; Yuji Nishi

2009-08-01T23:59:59.000Z

154

Anomalously High B-Values In The South Flank Of Kilauea Volcano, Hawaii-  

Open Energy Info (EERE)

Anomalously High B-Values In The South Flank Of Kilauea Volcano, Hawaii- Anomalously High B-Values In The South Flank Of Kilauea Volcano, Hawaii- Evidence For The Distribution Of Magma Below Kilauea'S East Rift Zone Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Anomalously High B-Values In The South Flank Of Kilauea Volcano, Hawaii- Evidence For The Distribution Of Magma Below Kilauea'S East Rift Zone Details Activities (1) Areas (1) Regions (0) Abstract: The pattern of b-value of the frequency-magnitude relation, or mean magnitude, varies little in the Kaoiki-Hilea area of Hawaii, and the b-values are normal, with b=0.8 in the top 10 km and somewhat lower values below that depth. We interpret the Kaoiki-Hilea area as relatively stable, normal Hawaiian crust. In contrast, the b-values beneath Kilauea's South

155

3-D Density Model Of Mt Etna Volcano (Southern Italy) | Open Energy  

Open Energy Info (EERE)

3-D Density Model Of Mt Etna Volcano (Southern Italy) 3-D Density Model Of Mt Etna Volcano (Southern Italy) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 3-D Density Model Of Mt Etna Volcano (Southern Italy) Details Activities (0) Areas (0) Regions (0) Abstract: A detailed density model of Mt. Etna and its surrounding areas has been evaluated using a 3-D inversion of the gravimetric data acquired in the 1980's. Several high-density and low-density bodies are found, penetrating from shallow depths as far down as 12 km bsl. A positive correlation (in terms of location, extent, density, and velocity) is established between several anomalies of the density model and features identified in previously published seismic tomographies. A prominent high-density body extending down to 7 km bsl is recognized in the southern

156

Direct-Current Resistivity At Haleakala Volcano Area (Thomas, 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 » Direct-Current Resistivity At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles.

157

Seismic interpretation and classification of mud volcanoes of the South Caspian Basin, offshore Azerbaijan.  

E-Print Network [OSTI]

, and the paleo-Amu Darya supplied sediment from the Pamirs to the east. Relatively minor sediment input came from other river systems, such as paleo-Kura and paleo-Sumgaiet. These rivers fed a series of lowstand lacustrine deltas. There are two distinctive... volcano formation begins in the Middle Miocene and becomes more intensive in the Pliocene. ? Roots of many mud volcanoes onshore are Lower Cretaceous and Jurassic. The samples of these rocks have bitumen content from 0.469% up to 2.5%. ? Gases of mud...

Yusifov, Mehdi Zahid

2005-11-01T23:59:59.000Z

158

Compound and Elemental Analysis At Lassen Volcanic National Park Area  

Open Energy Info (EERE)

Janik & Mclaren, 2010) Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Compound and Elemental Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes Analyses of eight well samples taken consecutively during the flow test showed an inverse correlation between NH3 and Cl_ concentrations. The last sample taken had a pH of 8.35 and contained 2100 ppm Cl_ and 0.55 ppm NH3. Ratios of Na+/K+ and Na+/Cl_ remained nearly constant throughout the flow test. Cation geothermometers (with inherent uncertainties of at least

159

CLIMATIC AND DEMOGRAPHIC CONSEQUENCES OF THE MASSIVE VOLCANIC ERUPTION OF 1258  

E-Print Network [OSTI]

, the source volcano for the 13th century aerial fal- lout remains unknown. A Madinah, Saudi Arabia, eruption in 1256 (Camp et al., Climatic Change 45: 361­374, 2000. © 2000 Kluwer Academic Publishers. Printed

160

A Pliocene Shoaling Basaltic Seamount- Ba Volcanic Group At Rakiraki, Fiji  

Open Energy Info (EERE)

Pliocene Shoaling Basaltic Seamount- Ba Volcanic Group At Rakiraki, Fiji Pliocene Shoaling Basaltic Seamount- Ba Volcanic Group At Rakiraki, Fiji Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Pliocene Shoaling Basaltic Seamount- Ba Volcanic Group At Rakiraki, Fiji Details Activities (0) Areas (0) Regions (0) Abstract: At Rakiraki in northeastern Viti Levu, the Pliocene Ba Volcanic Group comprises gently dipping, pyroxene-phyric basaltic lavas, including pillow lava, and texturally diverse volcanic breccia interbedded with conglomerate and sandstone. Three main facies associations have been identified: (1) The primary volcanic facies association includes massive basalt (flows and sills), pillow lava and related in-situ breccia (pillow-fragment breccia, autobreccia, in-situ hyaloclastite, peperite).

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Teleseismic-Seismic Monitoring At Lassen Volcanic National Park Area (Janik  

Open Energy Info (EERE)

Teleseismic-Seismic Monitoring At Lassen Volcanic National Park Area (Janik Teleseismic-Seismic Monitoring At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Teleseismic-Seismic Monitoring At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Teleseismic-Seismic Monitoring Activity Date Usefulness useful DOE-funding Unknown References Cathy J. Janik, Marcia K. McLaren (2010) Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two Circulation Cells In The Hydrothermal System Retrieved from "http://en.openei.org/w/index.php?title=Teleseismic-Seismic_Monitoring_At_Lassen_Volcanic_National_Park_Area_(Janik_%26_Mclaren,_2010)&oldid=425654"

162

A Physical Model For The Origin Of Volcanism Of The Tyrrhenian Margin- The  

Open Energy Info (EERE)

Model For The Origin Of Volcanism Of The Tyrrhenian Margin- The Model For The Origin Of Volcanism Of The Tyrrhenian Margin- The Case Of Neapolitan Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Physical Model For The Origin Of Volcanism Of The Tyrrhenian Margin- The Case Of Neapolitan Area Details Activities (0) Areas (0) Regions (0) Abstract: The onset of volcanism in the Neapolitan area and the tensile tectonics of the Tyrrhenian margin of the Apennine chain have been related to the opening of the Tyrrhenian Basin, which may have resulted in horizontal asthenosphere flows giving rise, in turn, to crustal distension, local mantle upwellings and ensuing volcanism. Geological and structural data were taken into consideration: the existence of a shallow crust-mantle discontinuity in the Neapolitan area, the onset of volcanism in a

163

Applicability of InSAR to tropical volcanoes: insights from Central AmericaQ1  

E-Print Network [OSTI]

volcanoes: insights from Central AmericaQ1 S. K. EBMEIER1*, J. BIGGS2,3, T. A. MATHER1 & F. AMELUNG3 1 COMET+, Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK 2 COMET+, Department rapid in southern Central America where Evergreen broad- leaf vegetation dominates. Land

Biggs, Juliet

164

The 1995–1998 eruption of the Soufriére Hills volcano, Montserrat, WI  

Science Journals Connector (OSTI)

...fan (400 m east{west by 1 km north{south...of the Tar River valley. The removal of...the Bel- ham River valley to the west of the volcano...top of the Gages valley, where ow activity...g) Major ows to west and southwest and...

2000-01-01T23:59:59.000Z

165

Air-dropped sensor network for real-time high-fidelity volcano monitoring  

Science Journals Connector (OSTI)

This paper presents the design and deployment experience of an air-dropped wireless sensor network for volcano hazard monitoring. The deployment of five stations into the rugged crater of Mount St. Helens only took one hour with a helicopter. The stations ... Keywords: design and deployment, sensor network

Wen-Zhan Song; Renjie Huang; Mingsen Xu; Andy Ma; Behrooz Shirazi; Richard LaHusen

2009-06-01T23:59:59.000Z

166

Lithosphere—atmosphere—ionosphere coupling after the 2003 explosive eruption of the Soufriere Hills Volcano, Montserrat  

Science Journals Connector (OSTI)

......solid Earth around 4 mHz. Numerical approximations...analysis|Ionosphere/atmosphere interactions|Volcano...frequency domain (2.2 mHz) and identified...and the ionospheric plasma and can be described...peak centered at 4 mHz, and an apparent...previously reported after atmospheric explosions from ionospheric......

Thomas Dautermann; Eric Calais; Philippe Lognonné; Glen S. Mattioli

2009-12-01T23:59:59.000Z

167

Process and Results of Hydrology in Long Valley Volcanoes of the Eastern Sierra Nevada Course  

E-Print Network [OSTI]

Process and Results of Hydrology in Long Valley Volcanoes of the Eastern Sierra Nevada Course Leigh of the Sierra Nevada Mountain Range, and specifically the Long Valley. In fact, many of the physical and chemical properties of the landforms in the Long Valley Caldera are the result of hydrothermal systems

Polly, David

168

Radiant flux from Earth's subaerially erupting volcanoes R. WRIGHT* and E. PILGER  

E-Print Network [OSTI]

Radiant flux from Earth's subaerially erupting volcanoes R. WRIGHT* and E. PILGER Hawaii Institute have been used to estimate lava effusion rates (Harris et al. 1997a, Wright et al. 2001), constrain lava flow thermal budgets (Pieri et al. 1990, Wright et al. 2000), deduce the explosive potential

Wright, Robert

169

Surface Gas Sampling At Lassen Volcanic National Park Area (Janik &  

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 Gas Sampling At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown References Cathy J. Janik, Marcia K. McLaren (2010) Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two

170

Volcanic, erosional, tectonic, and biogenic peaks on Guyot Summit Plains in the Louisville Seamount Chain  

E-Print Network [OSTI]

Vol. 23, p. 125-138. Sinton, J.M. 2009. Volcanic Islands. inAustral-Cook Islands [Sinton, 2009]. While these features

Ebuna, Daniel R.

2011-01-01T23:59:59.000Z

171

Political and scientific uncertainties in volcanic risk management: The yellow alert in Quito in October 1998  

Science Journals Connector (OSTI)

Volcanic risk management involves volcanologists, civil authorities and the ... 1998. It describes the scientific context, the political announcement and the decision-making process that...

Pascale Metzger; Robert D'Ercole; Alexis Sierra

172

GIS methods applied to the degradation of monogenetic volcanic fields: A case study of the Holocene volcanism of Gran Canaria (Canary Islands, Spain)  

Science Journals Connector (OSTI)

Modeling of volcanic morphometry provides reliable measurements of parameters that assist in the determination of volcanic landform degradation. Variations of the original morphology enable the understanding of patterns affecting erosion and their development, facilitating the assessment of associated hazards. A total of 24 volcanic Holocene eruptions were identified in the island of Gran Canaria (Canary Islands, Spain). 87% of these eruptions occurred in a wet environment while the rest happened in a dry environment. 45% of Holocene eruptions are located along short barrancos (S-type, less than 10 km in length), 20% along large barrancos (L-type, 10–17 km in length) and 35% along extra-large barrancos (XL-type, more than 17 km in length). The erosional history of Holocene volcanic edifices is in the first stage of degradation, with a geomorphic signature characterized by a fresh, young cone with a sharp profile and a pristine lava flow. After intensive field work, a careful palaeo-geomorphological reconstruction of the 24 Holocene eruptions of Gran Canaria was conducted in order to obtain the Digital Terrain Models (DTMs) of the pre- and post-eruption terrains. From the difference between these DTMs, the degradation volume and the incision rate were obtained. The denudation of volcanic cones and lava flows is relatively independent both their geographical location and the climatic environment. However, local factors, such as pre-eruption topography and ravine type, have the greatest influence on the erosion of Holocene volcanic materials in Gran Canaria. Although age is a key factor to help understand the morphological evolution of monogenetic volcanic fields, the Gran Canaria Holocene volcanism presented in this paper demonstrates that local and regional factors may determine the lack of correlation between morphometric parameters and age. Consequently, the degree of transformation of the volcanic edifices evolves, in many cases, independently of their age.

A. Rodriguez-Gonzalez; J.L. Fernandez-Turiel; F.J. Perez-Torrado; M. Aulinas; J.C. Carracedo; D. Gimeno; H. Guillou; R. Paris

2011-01-01T23:59:59.000Z

173

Thyroid cancer incidence in relation to volcanic activity  

SciTech Connect (OSTI)

Environmental or genetic factors are sought to explain the high incidence of thyroid cancer in Iceland. At present, it is impossible to cite any environmental factor, particularly one related to the volcanic activity in the country, which could explain the high incidence of thyroid cancer in Iceland. However, the thyroid gland in Icelanders is very small due to the high intake of iodine from seafood. It is, therefore, easier for physicians to find thyroid tumors. Furthermore, genetic factors are very likely to be of great importance in the small, isolated island of Iceland.

Arnbjoernsson, E.A.; Arnbjoernsson, A.O.; Olafsson, A.

1986-01-01T23:59:59.000Z

174

Analysis and correlation of volcanic ash in marine sediments from the Peru Margin, Ocean Drilling Program Leg 201: explosive volcanic cycles of the north-central Andes  

E-Print Network [OSTI]

A detailed investigation of cores from three Peru Margin sites drilled during Ocean Drilling Program (ODP) Leg 201 has been conducted to determine the occurrence of volcanic ash layers and ash accumulations within marine sediments along the Peru...

Hart, Shirley Dawn

2007-04-25T23:59:59.000Z

175

There May Be More Than One Way To Make a Volcanic Lake a Killer  

Science Journals Connector (OSTI)

...lacustrine environment Lake Nyos limnology Tanzania toxic materials volcanism West Africa...small lake nestled in a volcanic crater in Tanzania. Drawn to the spot from 8 kilometers...of the monsoon season that re-duces solar heating. "It seems like quite a coincidence...

RICHARD A. KERR

1986-09-19T23:59:59.000Z

176

Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period  

E-Print Network [OSTI]

Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period R (2006), Globally synchronous ice core volcanic tracers and abrupt cooling during the last glacial period histories from ice coring of Greenland and Antarctica over the period 2 to 45 ka, using SO4 anomalies

Price, P. Buford

177

Ensemble Forecasting of Volcanic Sulfur Emissions in Hawai'i Andre Pattantyus and Steven Businger  

E-Print Network [OSTI]

of Hawai'i. The probabilistic forecast products show uncertainty in pollutant concentrations of pollution known as "vog" after volcanic smog. Prevailing northeast trade winds in Hawaii advectEnsemble Forecasting of Volcanic Sulfur Emissions in Hawai'i Andre Pattantyus and Steven Businger

Businger, Steven

178

Submeter bathymetric mapping of volcanic and hydrothermal features on the East Pacific Rise crest at 9500  

E-Print Network [OSTI]

of bathymetric changes associated with active volcanic, hydrothermal and tectonic processes. Components: 15Submeter bathymetric mapping of volcanic and hydrothermal features on the East Pacific Rise crest to produce submeter resolution bathymetric maps of five hydrothermal vent areas at the East Pacific Rise (EPR

Whitcomb, Louis L.

179

Explosive volcanic eruptions — IV. The control of magma properties and conduit geometry on eruption column behaviour  

Science Journals Connector (OSTI)

......vents in the Sabaloka Couldron, Sudan, Geol. Mag., 108, 159-176...Volcanic eruption clouds and the thermal power output of explosive eruptions...vents in the Sabaloka Couldron, Sudan, Ceol. Mag., 108,159-176...Volcanic eruption clouds and the thermal power output of explosive eruptions......

Lionel Wilson; R. Stephen J. Sparks; George P. L. Walker

1980-10-01T23:59:59.000Z

180

How will melting of ice affect volcanic hazards in the twenty-first century?  

Science Journals Connector (OSTI)

...in press), as well as the processes...subglacial eruptions or geothermal activity (e.g...include volcanic/geothermal, glacier-permafrost...as Citlaltepetl, Mexico (lahars; Hubbard...that volcanic and geothermal activity is hastening...at Popocatepetl, Mexico, from 1994 to 2001...

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

The Distribution and Origin of Radon, CO2 and SO2 Gases at Arenal Volcano, Costa Rica  

E-Print Network [OSTI]

caracterización geoquímica pasiva y activa de volcanes con emisiones gaseosas. Técnicas como éstas pueden proveer

Williams-Jones, Glyn

182

A Morphometric Analysis Of The Submarine Volcanic Ridge South-East Of Pico  

Open Energy Info (EERE)

Morphometric Analysis Of The Submarine Volcanic Ridge South-East Of Pico Morphometric Analysis Of The Submarine Volcanic Ridge South-East Of Pico Island, Azores Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Morphometric Analysis Of The Submarine Volcanic Ridge South-East Of Pico Island, Azores Details Activities (0) Areas (0) Regions (0) Abstract: A region of crustal extension, the Azores Plateau contains excellent examples of submarine volcanic edifices constructed over a wide range of ocean depths along the Pico Ridge. Using bathymetric data and Towed Ocean Bottom Instrument (TOBI) side-scan sonar imagery, we measured the dimensions (diameter, height, slopes), shape, and texture of these volcanic edifices to further understanding of the geometric development of a submarine ridge. Our analysis and interpretation of the measurement and

183

Flow Test At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) |  

Open Energy Info (EERE)

Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Flow Test Activity Date Usefulness not indicated DOE-funding Unknown Notes Water samples were collected during nitrogen-stimulated flow tests in 1978, but no information was provided on sampling conditions. The well was flowed again for the last time in 1982, but the flow test lasted only 1 h (Thompson, 1985). References Cathy J. Janik, Marcia K. McLaren (2010) Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two

184

Modeling-Computer Simulations At San Juan Volcanic Field Area (Clarkson &  

Open Energy Info (EERE)

Modeling-Computer Simulations At San Juan Volcanic Field Area (Clarkson & Modeling-Computer Simulations At San Juan Volcanic Field Area (Clarkson & Reiter, 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Modeling-Computer Simulations At San Juan Volcanic Field Area (Clarkson & Reiter, 1987) Exploration Activity Details Location San Juan Volcanic Field Area Exploration Technique Modeling-Computer Simulations Activity Date Usefulness useful DOE-funding Unknown Notes In this study we combine thermal maturation models, based on the level of maturation of the Fruitland Formation coals, and time-dependet temperature models, based on heat-flow data in the San Juan region, to further investigate both the thermal history of the region and the nature of the influence of the San Juan volcanic field thermal source on the thermal

185

Isotopic Analysis At San Juan Volcanic Field Area (Larson & Jr, 1986) |  

Open Energy Info (EERE)

Isotopic Analysis At San Juan Volcanic Field Area (Larson & Jr, 1986) Isotopic Analysis At San Juan Volcanic Field Area (Larson & Jr, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At San Juan Volcanic Field Area (Larson & Jr, 1986) Exploration Activity Details Location San Juan Volcanic Field Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness not indicated DOE-funding Unknown Notes Oxygen isotopes. References Peter B. Larson, Hugh P. Taylor Jr (1986) An Oxygen Isotope Study Of Hydrothermal Alteration In The Lake City Caldera, San Juan Mountains, Colorado Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis_At_San_Juan_Volcanic_Field_Area_(Larson_%26_Jr,_1986)&oldid=687474" Categories: Exploration Activities

186

Direct-Current Resistivity Survey At Haleakala Volcano Area (Thomas, 1986)  

Open Energy Info (EERE)

Direct-Current Resistivity Survey At Haleakala Direct-Current Resistivity Survey At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one self-potential profile and one controlled-source electromagnetic sounding. The geochemical data collected included a reconnaissance soil mercury and

187

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

188

COLLOQUIUM: Volcanism, Impacts and Mass Extinctions: Causes and Effects |  

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

February 13, 2013, 4:15pm to 5:30pm February 13, 2013, 4:15pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: Volcanism, Impacts and Mass Extinctions: Causes and Effects Professor Gerta Keller Princeton University Presentation: WC13FEB2014_GKeller.pptx The nature and causes of mass extinctions in the geological past have remained topics of intense scientific debate for the past three decades. Central to this debate is the question of whether one, or several large bolide impacts, the eruption of large igneous provinces (LIP) or a combination of the two were the primary mechanisms driving the environmental changes that are universally regarded as the proximate causes for four of the five major Phanerozoic extinction events. Recent years have seen a revolution in our understanding of interplanetary

189

Characterization of Io's volcanic activity by infrared polarimetry  

SciTech Connect (OSTI)

The thermal emission from Io's volcanic hot spots is linearly polarized.Infrared measurements at 4.76 micrometers show disk-integrated polarization as large as 1.6 percent. The degree and position angle of linear polarization vary with Io's rotation in a manner characteristic of emission from a small number of hot spots. A model incorporating three hot spots best fits the data. The largest of these hot spots lies to the northeast of Loki Patera, as mapped from Voyager, and the other spot on the trailing hemisphere is near Ra Patera. The hot spot on the leading hemisphere corresponds to no named feature on the Voyager maps. The value determined for the index of refraction of the emitting surface is a lower bound; it is similar to that of terrestrial basalts and is somewhat less than that of sulfur. 25 references.

Goguen, J.D.; Sinton, W.M.

1985-10-01T23:59:59.000Z

190

Signals recorded by DEMETER satellite over active volcanoes during the period 2004 August–2007 December  

Science Journals Connector (OSTI)

......field and the plasma characteristics...from dc to 3.5 MHz; 3 A Langmuir...500 and 3000 4 A plasma analyser () of...active volcanic areas, data are recorded...recorded up to 3 MHz. Anywhere else...ejecta in the atmosphere during eruptive...in the world. Large black dots: location......

Jacques Zlotnicki; Feng Li; Michel Parrot

2010-12-01T23:59:59.000Z

191

Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting:  

Open Energy Info (EERE)

Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: a Case Study from the Taupo Volcanic Zone Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: a Case Study from the Taupo Volcanic Zone Authors H.M. Bibby, G.F. Risk, T.G. Caldwell and S.L. Bennie Conference World Geothermal Congress 2005; Antalya, Turkey; 2005/04/24 Published ?, 2005 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: a Case Study from the Taupo Volcanic Zone Citation H.M. Bibby,G.F. Risk,T.G. Caldwell,S.L. Bennie. 2005. Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: a Case Study from

192

Rock Sampling At San Francisco Volcanic Field Area (Warpinski, Et Al.,  

Open Energy Info (EERE)

San Francisco Volcanic Field Area (Warpinski, Et Al., San Francisco Volcanic Field Area (Warpinski, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Rock Sampling At San Francisco Volcanic Field Area (Warpinski, Et Al., 2004) Exploration Activity Details Location San Francisco Volcanic Field Area Exploration Technique Rock Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Northern Arizona University has re-assessed the existing exploration data, 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 potential drilling targets and sites. Further work may occur in 2004 or 2005. References N. R. Warpinski, A. R. Sattler, R. Fortuna, D. A. Sanchez, J.

193

Isotopic Analysis At Lassen Volcanic National Park Area (Janik & Mclaren,  

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 At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Fluid At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Isotopic Analysis- Fluid Activity Date Usefulness useful DOE-funding Unknown Notes Both fluid and gas isotopic analysis. References Cathy J. Janik, Marcia K. McLaren (2010) Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two

194

Static Temperature Survey At Lassen Volcanic National Park Area (Janik &  

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 » Static Temperature Survey At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Static Temperature Survey At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Static Temperature Survey Activity Date Usefulness useful DOE-funding Unknown Notes In 1978, the Walker "O" No. 1 well at Terminal Geyser was drilled to 1222 m, all in volcanic rocks (Beall, 1981). Temperature-log profiles made 10

195

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

196

Formation of Mud-Volcanic Fluids in Taman (Russia) and Kakhetia (Georgia): Evidence from Boron Isotopes  

Science Journals Connector (OSTI)

Temperatures of the formation of mud-volcanic waters are determined based on concentrations of some temperature-dependent components (Na–Li, Mg–Li). Estimates obtained for the Taman and Kakhetia regions are si...

V. Yu. Lavrushin; A. Kopf; A. Deyhle; M. I. Stepanets

2003-03-01T23:59:59.000Z

197

Deccan volcanism, the KT mass extinction and dinosaurs 709 J. Biosci. 34(5), November 2009  

E-Print Network [OSTI]

, 1988; Courtillot 1999). Over the past decade continental flood basalts (CFB) have been correlated be the general cause of mass extinctions. But acceptance of CFB volcanism as the likely catastrophe that led

Keller, Gerta

198

Mantle dynamics beneath the Pacific Northwest and the generation of voluminous back-arc volcanism  

E-Print Network [OSTI]

The Pacific Northwest (PNW) has a complex tectonic history and over the past ~17 Ma has played host to several major episodes of intraplate volcanism. These events include the Steens/Columbia River flood basalts (CRB) and ...

Long, Maureen D.

199

Models for Volcanic Processes in Long Valley California: Testing by Continental Drilling  

Science Journals Connector (OSTI)

The occurrence of a local magnitude ML...= 5. 8 earthquake on the Wheeler Crest fault on 4 October 1978 (Fig. 1) signaled the onset of significant seismic activity in the Long Valley, California, volcanic region.

John B. Rundle

1985-01-01T23:59:59.000Z

200

Quaternary Science Reviews 26 (2007) 15291546 Glacial and volcanic history of Icelandic table mountains from  

E-Print Network [OSTI]

2007 Elsevier Ltd. All rights reserved. 1. Introduction Table mountains, also widely known as tuyas of these distinctive landforms in the Tuya Butte volcanic field in northwestern British Columbia were described

Licciardi, Joseph M.

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Red Mountain is one of several hundred cinder cones within a swath of volcanic  

E-Print Network [OSTI]

time to expose their internal features. Although human quarrying creates frequently changing glimpses into a few of the cones in the volcanic field, quarries generally are unsafe for tourists and public access

Torgersen, Christian

202

Some Aspects Of Exploration In Non-Volcanic Areas | Open Energy Information  

Open Energy Info (EERE)

Some Aspects Of Exploration In Non-Volcanic Areas Some Aspects Of Exploration In Non-Volcanic Areas Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Some Aspects Of Exploration In Non-Volcanic Areas Details Activities (5) Areas (1) Regions (0) Abstract: Geothermal exploration in non-volcanic areas must above all rely on geophysical techniques to identify the reservoir, as it is unable to resort to volcanological methodologies. A brief description is therefore given of the contribution that can be obtained from certain types of geophysical prospectings. Author(s): Raffaello Nannini Published: Geothermics, 1986 Document Number: Unavailable DOI: Unavailable Source: View Original Journal Article Aerial Photography (Nannini, 1986) Aeromagnetic Survey (Nannini, 1986) Ground Gravity Survey (Nannini, 1986)

203

Surface Gas Sampling At Lassen Volcanic National Park Area (Janik &  

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 Gas Sampling At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) (Redirected from Water-Gas Samples At Lassen Volcanic National Park Area (Janik & Mclaren, 2010)) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Surface Gas Sampling At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Exploration Activity Details Location Lassen Volcanic National Park Area Exploration Technique Surface Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown References Cathy J. Janik, Marcia K. McLaren (2010) Seismicity And Fluid

204

Petrology of clinopyroxene-amphibole inclusions from the roque nublo volcanics, gran canaria, canary islands  

Science Journals Connector (OSTI)

Inclusions consisting of clinopyroxene, amphibole, Fe-Ti oxides and apatitc are abundant in the Roque Nublo volcanics, a unit of Late Tertiary age that is widespread on Gran Canaria Island. The unit includes alka...

T. Frisch; H. U. Schmincke

1969-01-01T23:59:59.000Z

205

Factors Affecting Radiation Dose from a Hypothetical Extrusive Volcanic Event at Yucca Mountain, Nevada  

SciTech Connect (OSTI)

This paper describes the factors that could affect doses to the reasonably maximally exposed individual (RMEI) as a result of a hypothetical extrusive igneous event at Yucca Mountain. Based on available information, there is no evidence that most of the spent fuel in waste packages intersected by a volcanic conduit would be reduced to fine-grained material and subsequently erupted as volcanic ash. (authors)

Weiner, R. [U. S. NRC Advisory Committee on Nuclear Waste and Materials, Rockville, MD (United States); Coleman, N. [U.S. Nuclear Regulatory Commission, Rockville, MD (United States)

2008-07-01T23:59:59.000Z

206

Volcanic hot spot detection from optical multispectral remote sensing data using artificial neural networks  

Science Journals Connector (OSTI)

......then filtered through a linear threshold gate. The output signal is forwarded to another...right: 2006 August 31, 20:39 UTC. In red, lava pixels. In yellow, colour saturated...Books. Rothery D.A. , Francis P.W., Wood C.A. Volcano monitoring using short......

Alessandro Piscini; Valerio Lombardo

2014-01-01T23:59:59.000Z

207

GEOPHYSICAL RESEARCH LETTERS, VOL. ???, XXXX, DOI:10.1002/, Investigating Dunedin Whistlers using Volcanic Lightning  

E-Print Network [OSTI]

in the Aleutian Islands, a region populated with active volcanoes. Their presence has allowed us to per- form- tosphere at a field-aligned plasma density irregularity, it will be closely guided along the magnetic fieldUniversity of Cape Town, Cape Town, 7701, South Africa 2Exegetic Analytics, Durban, 4001, South Africa 3

Otago, University of

208

Combined U-Th/He and 40Ar/39Ar geochronology of post-shield lavas from the Mauna Kea and Kohala volcanoes, Hawaii  

SciTech Connect (OSTI)

Late Quaternary, post-shield lavas from the Mauna Kea and Kohala volcanoes on the Big Island of Hawaii have been dated using the {sup 40}Ar/{sup 39}Ar and U-Th/He methods. The objective of the study is to compare the recently demonstrated U-Th/He age method, which uses basaltic olivine phenocrysts, with {sup 40}Ar/{sup 39}Ar ages measured on groundmass from the same samples. As a corollary, the age data also increase the precision of the chronology of volcanism on the Big Island. For the U-Th/He ages, U, Th and He concentrations and isotopes were measured to account for U-series disequilibrium and initial He. Single analyses U-Th/He ages for Hamakua lavas from Mauna Kea are 87 {+-} 40 ka to 119 {+-} 23 ka (2{sigma} uncertainties), which are in general equal to or younger than {sup 40}Ar/{sup 39}Ar ages. Basalt from the Polulu sequence on Kohala gives a U-Th/He age of 354 {+-} 54 ka and a {sup 40}Ar/{sup 39}Ar age of 450 {+-} 40 ka. All of the U-Th/He ages, and all but one spurious {sup 40}Ar/{sup 39}Ar ages conform to the previously proposed stratigraphy and published {sup 14}C and K-Ar ages. The ages also compare favorably to U-Th whole rock-olivine ages calculated from {sup 238}U - {sup 230}Th disequilibria. The U-Th/He and {sup 40}Ar/{sup 39}Ar results agree best where there is a relatively large amount of radiogenic {sup 40}Ar (>10%), and where the {sup 40}Ar/{sup 36}Ar intercept calculated from the Ar isochron diagram is close to the atmospheric value. In two cases, it is not clear why U-Th/He and {sup 40}Ar/{sup 39}Ar ages do not agree within uncertainty. U-Th/He and {sup 40}Ar/{sup 39}Ar results diverge the most on a low-K transitional tholeiitic basalt with abundant olivine. For the most alkalic basalts with negligible olivine phenocrysts, U-Th/He ages were unattainable while {sup 40}Ar/{sup 39}Ar results provide good precision even on ages as low as 19 {+-} 4 ka. Hence, the strengths and weaknesses of the U-Th/He and {sup 40}Ar/{sup 39}Ar methods are complimentary for basalts with ages of order 100-500 ka.

Aciego, S.M.; Jourdan, F.; DePaolo, D.J.; Kennedy, B.M.; Renne, P.R.; Sims, K.W.W.

2009-10-01T23:59:59.000Z

209

Effects of Volcanism on Climate Paul Withers The effects of subaerial volcanism extend far from their source. Long-distance effects  

E-Print Network [OSTI]

at ground level. Mafic volcanic gases can be roughly described as 80% H2O, 10% CO2, 5% SO2, and traces, 1980), El Chichon (Mexico, 1982), Mt. Hudson (Chile, 1991), and Mt. Pinatubo (Philippines, 1991 of the eruption column, having been transported less than 1000 km for any eruptions in the Holocene, or past 8000

Withers, Paul

210

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

211

Jurassic arc volcanism on Crimea (Ukraine): Implications for the paleo-subduction zone configuration of the Black Sea region  

E-Print Network [OSTI]

Jurassic arc volcanism on Crimea (Ukraine): Implications for the paleo-subduction zone margin. Crimea (Ukraine), a peninsula in the northern Black Sea, represents the northernmost region

Utrecht, Universiteit

212

Reply to comment on "Electrical Tomography of La Soufrire of Guadeloupe Volcano: Field experiments, 1D inversion and  

E-Print Network [OSTI]

Discussion Reply to comment on "Electrical Tomography of La Soufrière of Guadeloupe Volcano: Field.25.Qi; 91.35.Pn; 91.40.-k; 93.30.Vs 1. Introduction We thank Linde and Revil for their comment [1 and discuss our approach for interpreting electrical resistivity data acquired over complex geological

Beauducel, François

213

Isotope and chemical composition of gases from mud volcanoes in the Taman Peninsula and problem of their genesis  

Science Journals Connector (OSTI)

Variations in the carbon isotope composition in gases and waters of mud volcanoes in the Taman Peninsula are studied. The ?13C values in CH4 and CO2 vary from ?59.5 to ?44.0‰ (?13Cav = ?52.4 ± 5.4‰) and from ?17....

O. E. Kikvadze; V. Yu. Lavrushin; B. G. Pokrovskii…

2014-11-01T23:59:59.000Z

214

Water content of 1997 vulcanian pumices at Soufriere Hills Volcano (Montserrat) and implications on pre-eruptive conduit conditions  

E-Print Network [OSTI]

Water content of 1997 vulcanian pumices at Soufriere Hills Volcano (Montserrat) and implications of the eruptive products. We used quantitative analysis of water content in residual glasses (matrix glass. To better link water content to structural level, we performed new water solubility experiments at low

Paris-Sud XI, Université de

215

Co-eruptive subsidence at Galeras identified during an InSAR survey of Colombian volcanoes (20062009)  

E-Print Network [OSTI]

Co-eruptive subsidence at Galeras identified during an InSAR survey of Colombian volcanoes (2006 and Atmospheric Sciences, University of Miami, Miami, FL 33149, USA d Colombian Institute of Geology and Mining (INGEOMINAS), Bogotá DC, Colombia e Colombian Institute of Geology and Mining (INGEOMINAS), Pasto, Colombia

Biggs, Juliet

216

Helium Isotopes In Geothermal And Volcanic Gases Of The Western United  

Open Energy Info (EERE)

Helium Isotopes In Geothermal And Volcanic Gases Of The Western United Helium Isotopes In Geothermal And Volcanic Gases Of The Western United States, I, Regional Variability And Magmatic Origin Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Helium Isotopes In Geothermal And Volcanic Gases Of The Western United States, I, Regional Variability And Magmatic Origin Details Activities (1) Areas (1) Regions (0) Abstract: Helium isotope ratios in gases of thirty hot springs and geothermal wells and of five natural gas wells in the western United States show no relationship to regional conductive heat flow, but do show a correlation with magma-based thermal activity and reservoir fluid temperature (or total convective heat discharge). Gases from high-T (> 200°C) reservoirs have 3He/4He > 2 _ the atmospheric value, with high He

217

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

218

Hot Dry Rock Geothermal Energy In The Jemez Volcanic Field, New Mexico |  

Open Energy Info (EERE)

Rock Geothermal Energy In The Jemez Volcanic Field, New Mexico Rock Geothermal Energy In The Jemez Volcanic Field, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hot Dry Rock Geothermal Energy In The Jemez Volcanic Field, New Mexico Details Activities (2) Areas (1) Regions (0) Abstract: Large, young calderas possess immense geothermal potential due to the size of shallow magma bodies that underlie them. Through the example of the Valles and Toledo calderas, New Mexico, and older, more deeply eroded and exposed calderas, it is possible to reconstruct a general view of geothermal environments associated with such magmatic systems. Although a zone of anomalous heat flow extends well beyond caldera margins, high- to moderate-temperature hydrothermal systems appear to be restricted to zones

219

High-Resolution Aeromagnetic Survey Map of Part of the Southwest Nevada Volcanic Field  

SciTech Connect (OSTI)

A high-resolution aeromagnetic survey was recently flown to collect data for geologic investigations in the Southwest Nevada Volcanic Field. This survey represents a marked improvement over previous (1999) surveys. The survey includes over 860 km{sup 2} covered by nearly 16,000 km of flightline with 60-m spacing and an instrument altitude of 30 m above the ground surface. Features of interest visible in the dataset include magnetic banding in the volcanic tuffs that form the faulted terrain and sharp delineation of Quaternary basalt cinder cones and lava flows. This 1:100,000-scale map includes a shaded-relief map base and a semi-transparent overlay of the aeromagnetic data, with inset maps illustrating (1) comparisons of detail between the 1999 and 2004 datasets, (2) polarity reversal banding in the volcanic tuff ridges, (3) details of the morphology of Quaternary basalt centers enhanced by aeromagnetic data, and (4) use of GIS in planning the survey.

G. Keating; R. Prueitt; A. Cogbill

2004-06-21T23:59:59.000Z

220

New gamma-ray observatory begins operations at Sierra Negra volcano in the  

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

New gamma-ray observatory begins operations New gamma-ray observatory begins operations New gamma-ray observatory begins operations at Sierra Negra volcano in the state of Puebla, Mexico The High-Altitude Water Cherenkov Gamma Ray Observatory has begun formal operations at its site in Mexico. August 21, 2013 The HAWC Observatory taken in August 2013 from the summit of Sierra Negra. The image has been digitally altered to show HAWC as it will appear when construction is complete in 2014. The 111 Cherenkov detectors currently installed (100 Cherenkov detectors in operation) are colored white and located in the upper right quadrant of the array. The HAWC Observatory taken in August 2013 from the summit of Sierra Negra. The image has been digitally altered to show HAWC as it will appear when construction is complete in 2014. The 111 Cherenkov detectors currently

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Quaternary volcanism, tectonics, and sedimentation in the Idaho National Engineering Laboratory area  

SciTech Connect (OSTI)

In this article, we discuss the regional context and describe localities for a two-day field excursion in the vicinity of the Idaho National Engineering Laboratory (INEL). We address several geologic themes: (1) Late Cenozoic, bimodal volcanism of the Eastern Snake River Plain (ESRP), (2) the regional tectonics and structural geology of the Basin and Range province to the northwest of the ESRP, (3) fluvial, lacustrine, and aeolian sedimentation in the INEL area, and (4) the influence of Quaternary volcanism and tectonics on sedimentation near the INEL.

Hackett, W.R.; Smith, R.P.

1992-09-01T23:59:59.000Z

222

Quaternary volcanism, tectonics, and sedimentation in the Idaho National Engineering Laboratory area  

SciTech Connect (OSTI)

In this article, we discuss the regional context and describe localities for a two-day field excursion in the vicinity of the Idaho National Engineering Laboratory (INEL). We address several geologic themes: (1) Late Cenozoic, bimodal volcanism of the Eastern Snake River Plain (ESRP), (2) the regional tectonics and structural geology of the Basin and Range province to the northwest of the ESRP, (3) fluvial, lacustrine, and aeolian sedimentation in the INEL area, and (4) the influence of Quaternary volcanism and tectonics on sedimentation near the INEL.

Hackett, W.R.; Smith, R.P.

1992-01-01T23:59:59.000Z

223

Ground Magnetics At San Francisco Volcanic Field Area (Warpinski, Et Al.,  

Open Energy Info (EERE)

Warpinski, Et Al., Warpinski, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Magnetics At San Francisco Volcanic Field Area (Warpinski, Et Al., 2004) Exploration Activity Details Location San Francisco Volcanic Field Area Exploration Technique Ground Magnetics Activity Date Usefulness not indicated DOE-funding Unknown Notes Northern Arizona University has re-assessed the existing exploration data, 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 potential drilling targets and sites. Further work may occur in 2004 or 2005. References N. R. Warpinski, A. R. Sattler, R. Fortuna, D. A. Sanchez, J.

224

Evidence for explosive silicic volcanism on the Moon from the extended distribution of thorium near the Compton-Belkovich Volcanic Complex  

E-Print Network [OSTI]

We reconstruct the abundance of thorium near the Compton-Belkovich Volcanic Complex on the Moon, using data from the Lunar Prospector Gamma Ray Spectrometer. We enhance the resolution via a pixon image reconstruction technique, and find that the thorium is distributed over a larger (40 km $\\times$ 75 km) area than the (25 km $\\times$ 35 km) high albedo region normally associated with Compton-Belkovich. Our reconstructions show that inside this region, the thorium concentration is 15 - 33 ppm. We also find additional thorium, spread up to 300 km eastward of the complex at $\\sim$2 ppm. The thorium must have been deposited during the formation of the volcanic complex, because subsequent lateral transport mechanisms, such as small impacts, are unable to move sufficient material. The morphology of the feature is consistent with pyroclastic dispersal and we conclude that the present distribution of thorium was likely created by the explosive eruption of silicic magma.

Wilson, J T; Massey, R J; Elphic, R C; Jolliff, B L; Lawrence, D J; Llewellin, E W; McElwaine, J N; Teodoro, L F A

2014-01-01T23:59:59.000Z

225

Application of magnetic amplitude inversion in exploration for natural gas in volcanics Yaoguo Li, Center for Gravity, Electrical, and Magnetic Studies, Colorado School of Mines  

E-Print Network [OSTI]

Application of magnetic amplitude inversion in exploration for natural gas in volcanics Yaoguo Li basins and have strong remanent magnetization. The appli- cation arises in exploration of natural gas identify the volcanic units at large depths. INTRODUCTION Exploration for natural gas hosted in volcanics

226

RADIOGRAPHIC IMAGING BELOW A VOLCANIC CRATER FLOOR WITH COSMIC-RAY MUONS  

E-Print Network [OSTI]

horizontally-arriving cosmic ray muon with energy of 1 TeV can penetrate 2.6 km of water. Thus, cosmic-ray muon that uncertainty on the shape and amplitude of the energy spectrum of the muon source is within a few percentRADIOGRAPHIC IMAGING BELOW A VOLCANIC CRATER FLOOR WITH COSMIC-RAY MUONS HIROYUKI K.M. TANAKA

Aoki, Yosuke

227

Did the Toba volcanic eruption of $74 ka B.P. produce widespread glaciation?  

E-Print Network [OSTI]

that the Toba volcanic eruption, approximately 74 ka B.P., was responsible for the extended cooling period and ice sheet advance immediately following it, but previous climate model simulations, using 100 times a maximum global cooling of 10 K and ModelE runs produced 8­17 K of cooling within the first years

Robock, Alan

228

Steam Explosions, Earthquakes, and Volcanic Eruptions--What's in Yellowstone's Future?  

E-Print Network [OSTI]

Steam Explosions, Earthquakes, and Volcanic Eruptions-- What's in Yellowstone's Future? U. In the background, steam vigorously rises from the hot Each year, millions of visitors come to admire the hot, such as geysers. Steam and hot water carry huge quantities of thermal en- ergy to the surface from the magma cham

Torgersen, Christian

229

Modeling the Formation of Advanced Argillic Lithocaps: Volcanic Vapor Condensation Above Porphyry Intrusions  

Science Journals Connector (OSTI)

...predominance boundaries for aqueous S species were converted to RH, using equation 15.6 of Giggenbach (1997): RH = 2.65-12776/T - 1/2 log f O2 , for T in Kelvin. All redox data for volcanic (dark blue) and plutonic (light blue) rocks are based...

Jeffrey W. Hedenquist; Yuri A. Taran

230

Journal of Geodynamics Offshore Oligo-Miocene volcanic fields within the Corsica-Liguria Basin  

E-Print Network [OSTI]

1 Journal of Geodynamics Offshore Oligo-Miocene volcanic fields within the Corsica-Liguria Basin Mediterranean) have been affected by a geochemically diverse igneous activity, offshore and onshore, since to our initial project. Key-Words: Mediterranean, Ligurian margins and Basin, Offshore Corsica, Miocene

Paris-Sud XI, Université de

231

Constraining Transient Climate Sensitivity Using Coupled Climate Model Simulations of Volcanic Eruptions  

Science Journals Connector (OSTI)

Coupled climate model simulations of volcanic eruptions and abrupt changes in CO2 concentration are compared in multiple realizations of the Geophysical Fluid Dynamics Laboratory Climate Model, version 2.1 (GFDL CM2.1). The change in global-mean ...

Timothy M. Merlis; Isaac M. Held; Georgiy L. Stenchikov; Fanrong Zeng; Larry W. Horowitz

2014-10-01T23:59:59.000Z

232

New ice core evidence for a volcanic cause of the A.D. 536 dust veil  

E-Print Network [OSTI]

New ice core evidence for a volcanic cause of the A.D. 536 dust veil L. B. Larsen,1 B. M. Vinther,1. [1] New and well-dated evidence of sulphate deposits in Greenland and Antarctic ice cores indicate a substantial and extensive atmospheric acidic dust veil at A.D. 533­534 ± 2 years. This was likely produced

Nicolussi, Kurt

233

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

234

Evaporation of Lava and its Condensation from the Vapour Phase in Terrestrial and Lunar Volcanism  

Science Journals Connector (OSTI)

... appearance to the clouds of white steam from erupting geysers and from heated pools in geothermal areas. The resemblance between the steam clouds and the volcanic clouds is so pronounced ... is little doubt that they are formed by a similar mechanism. It appears that the hot lava has a high enough vapour pressure for appreciable quantities of it to evaporate. ...

BERNARD VONNEGUT; ROBERT K. MCCONNELL; RONALD V. ALLEN

1966-01-29T23:59:59.000Z

235

Automated volcanic eruption detection using MODIS Robert Wright *, Luke Flynn, Harold Garbeil, Andrew Harris, Eric Pilger  

E-Print Network [OSTI]

Automated volcanic eruption detection using MODIS Robert Wright *, Luke Flynn, Harold Garbeil, Harris, & Wright, 2001). Initial research was concerned with the use of high-spatial-, low.g. Flynn Mouginis-Mark, & Horton, 1994; Wright, Flynn, & Harris, 2001), lava domes (e.g. Oppenheimer

Wright, Robert

236

Palaeomagnetic study of a subaerial volcanic ridge (São Jorge Island, Azores) for the past 1.3 Myr: evidence for the Cobb Mountain Subchron, volcano flank instability and tectonomagmatic implications  

Science Journals Connector (OSTI)

......island first involved the construction of an NNW-SSE ridge...responsible for the construction of the central-western...to the geographical sectors of the island. Dykes...appears as soon as the heating run starts (Figs 4a...chron, Earth Planets Space, 54, 679-690. Hsu......

P. F. Silva; B. Henry; F. O. Marques; A. Hildenbrand; P. Madureira; C. A. Mériaux; Z. Kratinová

2012-03-01T23:59:59.000Z

237

Instability of Oceanic Volcanic Edifices: Examples of Sector Collapse, Debris Avalanches, and Debris Flows from Gran Canaria (Canary Islands)  

Science Journals Connector (OSTI)

We review different types of mass transfer (landslides, debris avalanches, debris flows, turbidites) generated throughout the evolution of a long-lived volcanic island (Gran Canaria) from its emergence at ca. 16 ...

Hans-Ulrich Schmincke; Mari Sumita

2014-01-01T23:59:59.000Z

238

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

239

Mapping of volcanic apron and the upper crust between Gran Canaria and Tenerife (Canary Islands) with seismic reflection profiling  

Science Journals Connector (OSTI)

During the Volcanic Island Clastic Apron Project (VICAP), south of the Canary Islands, a total of 700 line-km multichannel seismic profiles were acquired. Two prominent reflectors (A and C) were observed alter...

A. Geisslinger; H. B. Hirschleber; M. Schnaubelt; J. J. Dañobeitia…

1996-01-01T23:59:59.000Z

240

The channel between Gran Canaria and Tenerife: constructive processes and destructive events during the evolution of volcanic islands  

Science Journals Connector (OSTI)

Seismic, sidescan sonar, bathymetric multibeam and ODP (Ocean Drilling Program) data obtained in the submarine channel between the volcanic islands of Gran Canaria and Tenerife allow to identify constructive feat...

Sebastian Krastel; Hans-Ulrich Schmincke

2002-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Ground Gravity Survey At San Francisco Volcanic Field Area (Warpinski, Et  

Open Energy Info (EERE)

4) 4) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At San Francisco Volcanic Field Area (Warpinski, Et Al., 2004) Exploration Activity Details Location San Francisco Volcanic Field Area Exploration Technique Ground Gravity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes Northern Arizona University has re-assessed the existing exploration data, 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 potential drilling targets and sites. Further work may occur in 2004 or 2005. References N. R. Warpinski, A. R. Sattler, R. Fortuna, D. A. Sanchez, J. Nathwani (2004) Geothermal Resource Exploration And Definition Projects

242

Field Mapping At San Francisco Volcanic Field Area (Warpinski, Et Al.,  

Open Energy Info (EERE)

4) 4) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At San Francisco Volcanic Field Area (Warpinski, Et Al., 2004) Exploration Activity Details Location San Francisco Volcanic Field Area Exploration Technique Field Mapping Activity Date Usefulness not indicated DOE-funding Unknown Notes Northern Arizona University has re-assessed the existing exploration data, 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 potential drilling targets and sites. Further work may occur in 2004 or 2005. References N. R. Warpinski, A. R. Sattler, R. Fortuna, D. A. Sanchez, J. Nathwani (2004) Geothermal Resource Exploration And Definition Projects

243

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

244

Weathering and genesis of volcanic ash-influenced vertisols and vertic-like soils of El Salvador  

E-Print Network [OSTI]

weathered Vertisol. Many studies have been done on the clay mineralogy of volcanic ash-derived soils. These soils have considerable amounts of amorphous materials in the clay fraction resulting in properties different from other mineral soils. Literature... on the mineralogy of Vertisols derived from or influenced by pyroclastic deposits, however, remain sparse. The mineralogical composition of volcanic ash depends on the conditions existing at the time of eruptions, the stage of soil 13 formation, the thickness...

Yerima, Bernard Palmer Kfuban

1983-01-01T23:59:59.000Z

245

Deposits, character and timing of recent eruptions and gravitational collapses in Tatun Volcanic Group, Northern Taiwan: Hazard-related issues  

E-Print Network [OSTI]

, as well as two nuclear power plants built directly near the foot of the volcanoes. The TVG itself includes Taiwan Taipei City, with a population of around 8 million, as well as two nuclear power plants is located of the nuclear power plants may have a global impact. The potential for renewed activity of the TVG has been

Belousov, Alexander

246

The Lathrop Wells volcanic center: Status of field and geochronology studies  

SciTech Connect (OSTI)

The purpose of this paper is to describe the status of field and geochronology studies of the Lathrop Wells volcanic center. Our perspective is that it is critical to assess all possible methods for obtaining cross-checking data to resolve chronology and field problems. It is equally important to consider application of the range of chronology methods available in Quaternary geologic research. Such an approach seeks to increase the confidence in data interpretations through obtaining convergence among separate isotopic, radiogenic, and age-correlated methods. Finally, the assumptions, strengths, and weaknesses of each dating method need to be carefully described to facilitate an impartial evaluation of results. The paper is divided into two parts. The first part describes the status of continuing field studies for the volcanic center for this area south of Yucca Mountain, Nevada. The second part presents an overview of the preliminary results of ongoing chronology studies and their constraints on the age and stratigraphy of the Lathrop Wells volcanic center. Along with the chronology data, the assumptions, strengths, and limitations of each methods are discussed.

Crowe, B.; Morley, R. [Los Alamos National Laboratory, Las Vegas, NV (United States); Wells, S. [California Univ., Riverside, CA (United States); Geissman, J.; McDonald, E.; McFadden, L.; Perry, F. [New Mexico Univ., Albuquerque, NM (United States); Murrell, M.; Poths, J. [Los Alamos National Lab., NM (United States); Forman, S. [Ohio State Univ., Columbus, OH (United States)

1992-03-01T23:59:59.000Z

247

Comparative analysis of core drilling and rotary drilling in volcanic terrane  

SciTech Connect (OSTI)

Initially, the goal of this report is to compare and contrast penetration rates of rotary-mud drilling and core drilling in young volcanic terranes. It is widely recognized that areas containing an abundance of recent volcanic rocks are excellent targets for geothermal resources. Exploration programs depend heavily upon reliable subsurface information, because surface geophysical methods may be ineffective, inconclusive, or both. Past exploration drilling programs have mainly relied upon rotary-mud rigs for virtually all drilling activity. Core-drilling became popular several years ago, because it could deal effectively with two major problems encountered in young volcanic terranes: very hard, abrasive rock and extreme difficulty in controlling loss of circulation. In addition to overcoming these difficulties, core-drilling produced subsurface samples (core) that defined lithostratigraphy, structure and fractures far better than drill-chips. It seemed that the only negative aspect of core drilling was cost. The cost-per-foot may be two to three times higher than an ''initial quote'' for rotary drilling. In addition, penetration rates for comparable rock-types are often much lower for coring operations. This report also seeks to identify the extent of wireline core drilling (core-drilling using wireline retrieval) as a geothermal exploration tool. 25 refs., 21 figs., 13 tabs.

Flynn, T.; Trexler, D.T.; Wallace, R.H. Jr. (ed.)

1987-04-01T23:59:59.000Z

248

Fluvial dissection, isostatic uplift, and geomorphological evolution of volcanic islands (Gran Canaria, Canary Islands, Spain)  

Science Journals Connector (OSTI)

Digital analysis of torrential gullies (‘barrancos’) deeply incised into the volcanic Island of Gran Canaria (Canary Islands) allows us to extract the longitudinal profiles and pre-incision surfaces for individual basins, from which morphometric parameters (length, elevation, area, slope) have been calculated. Other derived parameters, such as ridgeline profiles, maximum incision values, volume removed by fluvial erosion, geophysical relief and isostatic uplift, have also been computed. Based on K/Ar ages for the island, well-constrained incision-uplift rates have been calculated by means of the combination of different methodological approaches commonly used in orogens and large mountain ranges. The geomorphological and morphometric analyses reveal that the island is clearly divided into four environmental quadrants determined by the combination of a couple of key-factors: the age of the volcanic surfaces and the climatic conditions. These factors determine a young sector covered with Plio-Quaternary platform-forming lavas (finished at 1.9–1.5 Ma) evolving under contrasting wet (NE) to dry (SE) climates, and an older sector, conserving the residual surfaces of the Miocene shield building (14.5–8.7 Ma) at the ridgelines, also subjected to wet (NW) and dry (SW) climates. Incision is related to the age zonation of the island. Maximum incisions (Gran Canaria. Additional sources of uplift, such as gravitational unloading, lithospheric flexure induced by adjacent islands, and/or volcanic underplating, are required. The theoretical onset of lithospheric bulging beneath Gran Canaria, as exerted by Tenerife, promoted a broad westwards tilting of the former from 3.8–3.5 Ma ago. This overall tilting accelerated fluvial incision, erosional unloading, and, therefore, the sustained differential uplift on the Eastern slope of the island over its last erosional stage. Considering mean uplift rates for the East and West sectors, Eastern values (0.024 mm/yr) are double than those in the West (0.011 mm/yr), supporting the role of lithospheric flexure of adjacent islands as an additional source of uplift. Complex feedback between fluvial unloading, differential uplift, orographic effect, lithospheric flexure, and volcanic underplating, seems to control the geomorphological development of hot-spot volcanic islands, after the gravitational collapse of stratovolcanos during their rejuvenation stage.

Inmaculada Menéndez; Pablo G. Silva; Moises Martín-Betancor; Francisco José Pérez-Torrado; Hervé Guillou; S. Scaillet

2008-01-01T23:59:59.000Z

249

Du volcan au sédiment: la dynamique du talus volcanoclastique sous-marin de Gran Canaria, canaries (Atlantique oriental, Leg ODP 157)  

Science Journals Connector (OSTI)

Four sites have been drilled in the submarine volcaniclastic apron of the volcanic island of Gran Canaria during the ODP Leg 157. The volcaniclastic submarine apron reflects the volcanological evolution of the island. The main volcanic phases are recorded in the sedimentation by an important contemporaneous clastic influx on the apron. However, periods of volcanic quiescence are characterized by very weak sedimentation rates. Consequently, it is possible to establish a volcanostratigraphy from the sedimentary record of the apron.

Jean-Luc Schneider; Martine Gérard; Hans-Ulrich Schmincke; Philip P.E. Weaver; John Firth; Jesus Baraza; James F. Bristow; Charlotte Brunner; Steven N. Carey; Bernard Coakley; Michael Fuller; Thomas Funck; Patrick Goldstrand; Bernhart Herr; Julie Hood; Richard Howe; Ian Jarvis; Susana Lebreiro; Sten Lindblom; Holger Lykke-Andersen; Rosanna Maniscalco; Guy Rothwell; Joanne Sblendorio-Levy; Mari Sumita; Hidetsugu Taniguchi; Penny Tu; Paul Wallace

1997-01-01T23:59:59.000Z

250

Volcanic ash in feed coal and its influence on coal combustion products  

SciTech Connect (OSTI)

The US Geological Survey and the University of Kentucky Center for Applied Energy Research are collaborating with an Indiana Utility to determine the physical and chemical properties of feed coal and coal combustion products (CCPs) from a coal-fired power plant. The plant utilizes a low-sulfur (.23--.47 weight percent S) coal from the Powder River Basin, Wyoming. Scanning Electron Microscope (SEM) and X-ray diffraction (XRD) analysis of feed coal samples identified two mineral suites. A primary suite (not authigenic) consisting of quartz (detrital and volcanic beta-form grains), biotite, and minor zircon and a secondary authigenic mineral suite containing calcite, alumino-phosphates (crandallite and gorceixite), kaolinite, quartz, anatase, barite, and pyrite. The authigenic minerals are attributed to air-fall and reworked volcanic ash that was deposited in peat-forming mires. The Powder River Basin feed coals contain higher amounts of Ba, Ca, Mg, Na, Sr, and P compared to other analyzed eastern coals. These elements are associated with alumino-phosphate, biotite, calcite, and clay minerals. The element associations are indicative of coal that incorporated volcanic ash during deposition. XRD analysis of CCPs revealed a predominance of glass, perovskite, lime, gehlenite, quartz, and phosphates with minor amounts of periclase, anhydrite, hematite, and spinel group minerals in the fly ash; and quartz, plagioclase (albite and anorthite), pyroxene (augite and fassaite), rhodonite, and akermanite in the bottom ash. Microprobe and SEM analysis of fly ash samples revealed quartz, zircon, monazite, euhedral laths of corundum with merrillite, hematite, dendritic spinels/ferrites, and rounded grains of wollastonite with periclase. The abundant Ca and Mg mineral phases in the fly ashes are related to the presence of carbonate, clay, and phosphate minerals in the feed coal. The Ca- and Mg-rich mineral phases in the CCPs can be attributed to volcanic minerals deposited in the peat-forming mire. Dissolution and alteration of these minerals occurred either in the peat-forming sate or during coalification/diagenesis contributing to the authigenic mineral suite. Additionally, detrital mineral input and epigenetic ground-water flow may have affected the geochemistry of the feed coal.

Brownfield, M.E.; Affolter, R.H.; Cathcart, J.D.; Brownfield, I.K.; Hower, J.C.; Stricker, G.D.; O'Connor, J.T.

2000-07-01T23:59:59.000Z

251

Terr. Atmos. Ocean. Sci., Vol. 17, No. 4, 703-722, December 2006 Distribution of Gassy Sediments and Mud Volcanoes Offshore  

E-Print Network [OSTI]

Sediments and Mud Volcanoes Offshore Southwestern Taiwan Jui-Kun Chiu 1 , Wei-Hao Tseng 1 , and Char@ntu.edu.tw This study presents the results from recent intense marine geophysical surveys conducted offshore: offshore Kaohsiung, adjacent to the Kaoping Submarine Canyon, near the head of the Fangliao Submarine

Lin, Andrew Tien-Shun

252

Coupled Thermal-Hydrological-Mechanical-Chemical Model And Experiments For Optimization Of Enhanced Geothermal System Development And Production: Evaluation of Stimulation at the Newberry Volcano EGS Demonstration Site  

Broader source: Energy.gov [DOE]

Coupled Thermal-Hydrological-Mechanical-Chemical Model And Experiments For Optimization Of Enhanced Geothermal System Development And Production: Evaluation of Stimulation at the Newberry Volcano EGS Demonstration Site through Natural Isotopic Reactive Tracers and Geochemical Investigation presentation at the April 2013 peer review meeting held in Denver, Colorado.

253

Detecting volcanic resurfacing of heavily cratered terrain: Flooding simulations on the Moon using Lunar Orbiter Laser Altimeter (LOLA) data  

Science Journals Connector (OSTI)

Abstract Early extrusive volcanism from mantle melting marks the transition from primary to secondary crust formation. Detection of secondary crust is often obscured by the high impact flux early in solar system history. To recognize the relationship between heavily cratered terrain and volcanic resurfacing, this study documents how volcanic resurfacing alters the impact cratering record and models the thickness, area, and volume of volcanic flood deposits. Lunar Orbiter Laser Altimeter (LOLA) data are used to analyze three different regions of the lunar highlands: the Hertzsprung basin; a farside heavily cratered region; and the central highlands. Lunar mare emplacement style is assumed to be similar to that of terrestrial flood basalts, involving large volumes of material extruded from dike-fed fissures over relatively short periods of time. Thus, each region was flooded at 0.5 km elevation intervals to simulate such volcanic flooding and to assess areal patterns, thickness, volumes, and emplacement history. These simulations show three primary stages of volcanic flooding: (1) Initial flooding is largely confined to individual craters and deposits are thick and localized; (2) basalt flows breach crater rim crests and are emplaced laterally between larger craters as thin widespread deposits; and (3) lateral spreading decreases in response to regional topographic variations and the deposits thicken and bury intermediate-sized and larger craters. Application of these techniques to the South Pole-Aitken basin shows that emplacement of ?1?2 km of cryptomaria can potentially explain the paucity of craters 20–64 km in diameter on the floor of the basin relative to the distribution in the surrounding highlands.

Jennifer L. Whitten; James W. Head III

2013-01-01T23:59:59.000Z

254

ATMOSPHERIC DISPERSAL AND DEPOSITION OF TEPHRA FROM A POTENTIAL VOLCANIC ERUPTION AT YUCCA MOUNTAIN, NEVADA  

SciTech Connect (OSTI)

The purpose of this model report is to provide documentation of the conceptual and mathematical model (Ashplume) for atmospheric dispersal and subsequent deposition of ash on the land surface from a potential volcanic eruption at Yucca Mountain, Nevada. This report also documents the ash (tephra) redistribution conceptual model. These aspects of volcanism-related dose calculation are described in the context of the entire igneous disruptive events conceptual model in ''Characterize Framework for Igneous Activity'' (BSC 2004 [DIRS 169989], Section 6.1.1). The Ashplume conceptual model accounts for incorporation and entrainment of waste fuel particles associated with a hypothetical volcanic eruption through the Yucca Mountain repository and downwind transport of contaminated tephra. The Ashplume mathematical model describes the conceptual model in mathematical terms to allow for prediction of radioactive waste/ash deposition on the ground surface given that the hypothetical eruptive event occurs. This model report also describes the conceptual model for tephra redistribution from a basaltic cinder cone. Sensitivity analyses and model validation activities for the ash dispersal and redistribution models are also presented. Analyses documented in this model report update the previous documentation of the Ashplume mathematical model and its application to the Total System Performance Assessment (TSPA) for the License Application (TSPA-LA) igneous scenarios. This model report also documents the redistribution model product outputs based on analyses to support the conceptual model. In this report, ''Ashplume'' is used when referring to the atmospheric dispersal model and ''ASHPLUME'' is used when referencing the code of that model. Two analysis and model reports provide direct inputs to this model report, namely ''Characterize Eruptive Processes at Yucca Mountain, Nevada and Number of Waste Packages Hit by Igneous Intrusion''. This model report provides direct inputs to the TSPA, which uses the ASHPLUME software described and used in this model report. Thus, ASHPLUME software inputs are inputs to this model report for ASHPLUME runs in this model report. However, ASHPLUME software inputs are outputs of this model report for ASHPLUME runs by TSPA.

C. Harrington

2004-10-25T23:59:59.000Z

255

NAME M/YEAR MASTERS THESES TITLES SCOPEL, ROBERT B Jun49 The Volcanic History of Jackson Hole, Wyoming  

E-Print Network [OSTI]

, Park County, Wyoming GOSSER, CHARLES F. Jun60 Petrography and Metamorphism of the Star Lake Area of the Keewatin Province, Ontario RUBEL, DANIEL N Apr59 Tertiary volcanic rocks of the Cooke city - pilot peak, Montana BRUEHL, DONALD H. Jun61 The Petrography and Structure of an area North of Cooke City, Montana #12

Baskaran, Mark

256

Lithospheric response to volcanic loading by the Canary Islands: constraints from seismic reflection data in their flexural moat  

E-Print Network [OSTI]

Lithospheric response to volcanic loading by the Canary Islands: constraints from seismic reflection data in their flexural moat J. S. Collier1 and A. B. Watts2 1 Department of Earth Sciences suggesting they are the consequence of sediment loading at the Moroccan continental margin. Units III, IV

Watts, A. B. "Tony"

257

On the origin of graben and ridges within and near volcanically buried craters and basins in Mercury's northern plains  

E-Print Network [OSTI]

in Mercury's northern plains Andrew M. Freed,1 David M. Blair,1 Thomas R. Watters,2 Christian Klimczak,3 Paul volcanic plains taken by the MESSENGER spacecraft reveal a large number of buried impact craters and basins pooled lavas were thickest, and no graben are predicted within generally thinner plains outside of major

Zuber, Maria

258

Improving clay content measurement in oxidic and volcanic ash soils of Hawaii by increasing dispersant concentration and ultrasonic energy levels  

Science Journals Connector (OSTI)

Abstract Quantifying clay content is a fundamental step in predicting and managing soil behaviors such as nutrient and water retention. However, clay measurements are underestimated when using standard methods of dispersion in soils rich in oxides and volcanic ash-derived non-crystalline minerals. Increasing levels of the chemical dispersant and ultrasonic energy are two simple techniques found to increase dispersion and clay measurements in temperate soils, but their effects are less known for oxidic and volcanic ash soils. In this study we investigated the effects of increasing dispersion concentration and ultrasonic energy on clay measurements for a range of oxidic and volcanic ash soils from Hawaii. While doubling and tripling the standard sodium hexametaphosphate concentration of 0.441 g L? 1 did not increase estimates of clay content, increasing levels of ultrasonic energy up to 1600 J mL? 1 significantly increased measured clay content for all oxide and volcanic ash soils. The response to ultrasonication was dependent on soil carbon, oxide content, and surface charge, with more energy needed to disperse soils higher in carbon, oxides, and positive charge. Scanning electron microscopy revealed damage to the sand fraction in some soils when ultrasonicated, but the extent of this damage was viewed as negligible. Porous sand-sized particles resembling pumice grains were also observed in some soils, suggesting that conventional particle size analysis and clay interpretations may not adequately describe surface related behaviors.

Joshua H.S. Silva; Jonathan L. Deenik; Russell S. Yost; Gregory L. Bruland; Susan E. Crow

2015-01-01T23:59:59.000Z

259

Crustal structure of the rifted volcanic margins and uplifted plateau of Western Yemen from receiver function analysis  

Science Journals Connector (OSTI)

......Besse J. On causal links between flood basalts and continental breakup. Earth...Ebinger C.J., Baker J., eds. (2002) Boulder, CO. 1-14. Vol 362. Milkereit B...chrono-stratigraphy of pre- and syn-rift bimodal flood volcanism in Ethiopia and Yemen. Earth......

Abdulhakim Ahmed; Christel Tiberi; Sylvie Leroy; Graham W. Stuart; Derek Keir; Jamal Sholan; Khaled Khanbari; Ismael Al-Ganad; Clémence Basuyau

2013-01-01T23:59:59.000Z

260

International Polar Year (IPY) Student Traineeships: Investigation of the impact of western arctic volcanic eruption on weather and climate  

E-Print Network [OSTI]

if the eruptions are not very large. Four aspects of volcanic eruptions on local weather were explored: 1) heat of the four aspects has the greatest impact on local weather during an eruption. Evaluation with observational data was performed to assess whether routine Weather Research and Forecasting (WRF) model data can

Moelders, Nicole

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261

ELSEVIER Palaeogeography, Palaeoclimatology, Palaeoecology 152 (1999) 283303 Sedimentary cycles and volcanic ash beds in the Lower Pliocene  

E-Print Network [OSTI]

Abstract A high-resolution cyclostratigraphy for the rhythmically bedded lignite­marl sequences volcanic ash beds. Detailed field reconnaissance in three open-pit lignite mines reveals three end-member sediment types: lignites, composed primarily of organic material; grey marls, a mixture of carbonate

Utrecht, Universiteit

262

Long-term desorption behavior of uranium and neptunium in heterogeneous volcanic tuff materials /  

SciTech Connect (OSTI)

Uranium and neptunium desorption were studied in long-term laboratory experiments using four well-characterized volcanic tuff cores collected from southeast of Yucca Mountain, Nevada. The objectives of the experiments were to 1. Demonstrate a methodology aimed at characterizing distributions of sorption parameters (attributes of multiple sorption sites) that can be applied to moderately-sorbing species in heterogeneous systems to provide more realistic reactive transport parameters and a more realistic approach to modeling transport in heterogeneous systems. 2. Focus on uranium and neptunium because of their high solubility, relatively weak sorption, and high contributions to predicted dose in Yucca Mountain performance assessments. Also, uranium is a contaminant of concern at many DOE legacy sites and uranium mining sites.

Dean, Cynthia A.

2010-05-01T23:59:59.000Z

263

The hydroelectric problem of porous rocks: inversion of the position of the water table from self-potential data  

Science Journals Connector (OSTI)

......Fournaise volcano, a large shield volcano located...this area [one borehole and electromagnetic...volcanic areas where drilling is expensive. permeability...In addition, drilling a set of boreholes...Fournaise volcano, a large shield volcano on...or possibly in a borehole) is the convolution......

A. Revil; V. Naudet; J. D. Meunier

2004-11-01T23:59:59.000Z

264

The Cretaceous Okhotsk–Chukotka Volcanic Belt (NE Russia): Geology, geochronology, magma output rates, and implications on the genesis of silicic \\{LIPs\\}  

Science Journals Connector (OSTI)

The Cretaceous Okhotsk–Chukotka volcanic belt (OCVB) is a prominent subduction-related magmatic province, having the remarkably high proportion of silicic rocks (ca. 53% of the present-day crop area, and presumably over 70% of the total volcanic volume). Its estimated total extrusive volume ranges between 5.5 × 105 km3 (the most conservative estimate) and over 106 km3. This article presents a brief outline of the geology of OCVB, yet poorly described in international scientific literature, and results of a geochronological study on the northern part of the volcanic belt. On the base of new and published U–Pb and 40Ar/39Ar age determinations, a new chronological model is proposed. Our study indicates that the activity of the volcanic belt was highly discontinuous and comprised at least five main episodes at 106–98 Ma, 94–91 Ma, 89–87 Ma, 85.5–84 Ma, and 82–79 Ma. The new data allow a semi-quantitative estimate of the volcanic output rate for the observed part of the OCVB (area and volume approximately 105 km2 and 2.5 × 105 km3, respectively). The average extrusion rate for the entire lifetime of the volcanic belt ranges between 1.6 and 3.6 × 10? 5 km3yr? 1 km? 1, depending on the assumed average thickness of the volcanic pile; the optimal value is 2.6 × 10? 5 km3yr? 1 km? 1. Despite imprecise, such estimates infer the time-averaged volcanic productivity of the OCVB is similar to that of silicic \\{LIPs\\} and most active recent subduction-related volcanic areas of the Earth. However, the most extensive volcanic flare-ups at 89–87 and 85.5-84 Ma had higher rates of over 9.0 × 10? 5 km3yr? 1 km? 1. The main volumetric, temporal and compositional parameters of the OCVB are similar to those of silicic LIPs. This gives ground for discussion about the geodynamic setting of the latters, because the widely accepted definition of a LIP implies a strictly intraplate environment. Considering the genesis of the OCVB and other large provinces of silicic volcanism, we propose that residual thermal energy preserved in the continental crust after a previous major magmatic event may have been one of major reasons for high proportion of felsic rocks in a volcanic pile. In this scenario, underplating of mantle-derived basalts causes fast and extensive melting of still hot continental crust and generation of voluminous silicic magmas.

P.L. Tikhomirov; E.A. Kalinina; T. Moriguti; A. Makishima; K. Kobayashi; I.Yu. Cherepanova; E. Nakamura

2012-01-01T23:59:59.000Z

265

Effects of Volcanism, Crustal Thickness, and Large Scale Faulting on the Development and Evolution of Geothermal Systems: Collaborative Project in Chile  

Broader source: Energy.gov [DOE]

Effects of Volcanism, Crustal Thickness, and Large Scale Faulting on the Development and Evolution of Geothermal Systems: Collaborative Project in Chile presentation at the April 2013 peer review meeting held in Denver, Colorado.

266

Center for volcanic and tectonic studies, Department of Geoscience, Univ. of Nevada, Las Vegas, NV. Annual report No. 69, October 1, 1991--September 30, 1992  

SciTech Connect (OSTI)

The annual report of the Center for Volcanic and Tectonic Studies (CVTS) contains a series of papers, maps, and reprints that review the progress made by the CVTS between October 1, 1991 and December 31, 1992. During this period CVTS staff focused on several topics that had direct relevance to volcanic hazards related to the proposed high-level nuclear waste repository at Yucca Mountain, Nevada. These topics included: (1) The role of the mantle during regional extension. (2) The structural controls and emplacement mechanisms of Pliocene/Quaternary basaltic centers and dikes. (3) The detailed geochemistry of individual volcanic centers in Crater Flat, Nevada. (4) Estimating the probability of disruption of the proposed repository by volcanic eruption (this topic is being studied by Dr. C-H. Ho at UNLV).

Smith, E.I.

1992-12-15T23:59:59.000Z

267

P-Wave Residual Differences and Inferences on an Upper Mantle Source for the Silent Canyon Volcanic Centre, Southern Great Basin, Nevada  

Science Journals Connector (OSTI)

......Canyon volcanic centre of the Nevada Test Site have been reduced by corresponding...1968. Geologic setting of Nevada Test Site and Neliis Air Force Range...comparison of the Lake Superior and Nevada Test Site source regions, Seism. Data......

William Spence

1974-09-01T23:59:59.000Z

268

Late Tertiary/Quaternary volcanics of southern Costa Rica and northern Panama  

SciTech Connect (OSTI)

The recent tectonic evolution of the Isthmus of Panama is marked by a complexity imparted by a subduction zone - magmatic arc, a transform plate boundary, and the attempted subduction of an aseismic ridge. In northern Panama andesites form the morphologically young Chiriqui stratovolcano, while in southern Costa Rica they are found interbedded with thick lahars. Two groups of andesites occur in the region. One is low in Si and K (Group I); the other high in Si and K (Group II). The Panamanian andesites belong to both the groups, while Costa Rican andesites are restricted to Group II. Group I andesites are glassy, plagioclase-phyric (An45 rims), and contain abundant augite (Wo46En46Fs8) and magnetite. Rare, resorbed olivine (Fo82) and amphibole are occasionally observed. The Group II andesites have similar mineralogy but also contain abundant pargasitic hornblende and minor orthopyroxene or pigeonite. Xenoliths are common in the Group II andesites of Chiriqui Volcano. Two types of xenoliths are recognized. Cumulate-textured, hornblende gabbro xenoliths vary from nearly pure plagioclase to nearly pure amphibole. These gabbroic xenoliths contain plagioclase (An90 cores to An53 rims), augite, and pargasitic hornblende often displaying the same reaction products as found in the andesites. These xenoliths are interpreted as cognate. These andesites are all characterized by high alkalis and alkali earths; Group II have over 1500 ppm Ba and 1000 ppm Sr. They are apparently produced by partial melting of a highly metasomatised mantle followed by high-pressure fractionation dominated by hornblende.

Roy, A.; Byerly, G.R.

1985-01-01T23:59:59.000Z

269

Paleomagnetic and paleointensity study of Oligocene volcanic rocks from Chihuahua (northern Mexico)  

Science Journals Connector (OSTI)

A detailed rock-magnetic, paleomagnetic and paleointensity study was carried out on Oligocene volcanic formations from Chihuahua (northern Mexico) in order to obtain some decisive constraints for the tectonic evolution of the southern Cordilleran Orogenic Belt of North America and for the geomagnetic field strength during Oligocene time. Age of the volcanic units lies between 33 and 25 Ma according to available radiometric data. Rock-magnetic experiments reveal that remanence is carried in most cases by Ti-poor titanomagnetite, resulting of oxy-exsolution of original titanomagnetite during the initial flow cooling. Unblocking temperature spectra and relatively high coercivities point to ‘small’ pseudo-single domain magnetic grains for these (titano)magnetites. Single-component, linear demagnetization plots were observed in most cases. Nine sites yield reverse polarity magnetization, three are normally magnetized and one unit shows intermediate polarity magnetization. An evidence of strong lightning-produced magnetization overprint was detected for one site. Combining all paleomagnetic data currently available for northern Mexico, we obtained a well-defined Eocene–Oligocene mean paleomagnetic direction with I=48.5°, D=337.1°, k=20, ?95=6.8°, N=24, which deviates counterclockwise from the expected direction estimated from the North American apparent polar wander path. This suggests a vertical-axis tectonic counterclockwise rotation of about 16° relative to stable North America. Transition from Laramide compression to Basin and Range extension occurred during Oligocene, around 32–30 Ma. Tectonic rotation may then reflect east–northeast extension in the mid- to late-Cenozoic. Twenty-three samples were pre-selected for Thellier palaeointensity experiments because of their low viscosity index, stable remanent magnetization and reasonably reversible continuous thermomagnetic curves. Only 12 samples, coming from three individual basaltic lava flows, yielded reliable paleointensity estimates with the flow-mean virtual dipole moments (VDM) ranging from 3.96 to 4.65×1022 Am2. Combination of Mexican data with the available comparable quality Oligocene paleointensity results yield a mean VDM of 4×1022 Am2, which is comparable or slightly higher than the mean \\{VDMs\\} calculated for the Mesozoic low field period, but significantly lower than present day value. This low intensity may correlate with the relatively high paleosecular variation rate invoked around 30 Ma by several authors.

A Goguitchaichvili; L.M Alva-Valdivia; J Urrutia-Fucugauchi; C Zesati; C Caballero

2001-01-01T23:59:59.000Z

270

Naturally occurring heavy radioactive elements in the geothermal microcosm of the Los Azufres (Mexico) volcanic complex  

Science Journals Connector (OSTI)

Abstract The Los Azufres geothermal complex of central Mexico is characterized by fumaroles and boiling hot-springs. The fumaroles form habitats for extremophilic mosses and ferns. Physico-chemical measurements of two relatively pristine fumarolic microcosms point to their resemblance with the paleo-environment of earth during the Ordovician and Devonian periods. These geothermal habitats were analysed for the distribution of elemental mass fractions in the rhizospheric soil (RS), the native volcanic substrate (VS) and the sediments (S), using the new high-sensitivity technique of polarized x-ray energy dispersive fluorescence spectrometry (PEDXRF) as well as instrumental neutron activation analysis (INAA) for selected elements. This work presents the results for the naturally occurring heavy radioactive elements (NOHRE) Bi, Th and U but principally the latter two. For the RS, the density was found to be the least and the total organic matter content the most. Bi was found to be negligibly present in all substrate types. The average Th and U mass fractions in the RS were higher than in the VS and about equal to their average mass fractions in the S. The VS mass fraction of Th was higher, and of U lower, than the mass fractions in the earth's crust. In fact for the fumaroles of one site, the average RS mass fractions of these elements were higher than the averaged values for S (without considering the statistical dispersion). The immobilization of the NOHRE in the RS is brought about by the bio-geochemical processes specific to these extremophiles. Its effectiveness is such that despite the small masses of these plants, it compares with, or may sometimes exceed, the immobilization of the NOHRE in the S by the abiotic and aggressive chemical action of the hot-springs. These results indicate that the fumarolic plants are able to transform the volcanic substrate to soil and to affect the NOHRE mass fractions even though these elements are not plant nutrients. Mirrored back to the paleo times when such plant types were ubiquitous, it would mean that the first plants contributed significantly to pedogenesis and the biogeochemical recycling of even the heaviest and radioactive elements. Such plants may potentially be useful for the phytostabilisation of soil moderately contaminated by the NOHRE. Furthermore where applicable, geochronology may require taking into account the influence of the early plants on the NOHRE distributions.

W.A. Abuhani; N. Dasgupta-Schubert; L.M. Villaseñor; D. García Avila; L. Suárez; C. Johnston; S.E. Borjas; S.A. Alexander; S. Landsberger; M.C. Suárez

2015-01-01T23:59:59.000Z

271

Calc-alkaline mafic rocks of the Black Dyke Formation: Remnants of the final activity of a submerged Permian volcano  

SciTech Connect (OSTI)

The Permian Black Dyke Fm., which occurs as large tectonic slices within the Luning allochthon in the Excelsior Mountains, NV, forms an E-W trending anticline at Black Dyke Mountain. The 800-m thick stratigraphic succession consists of volcanic and pyroclastic rocks overlain conformably by volcaniclastic sediments. Along the northern limb of the anticline, the rocks consist of mafic porphyritic lavas, breccias, and graded and ungraded pyroclastic beds. The sedimentary unit consists of thick volcaniclastic turbidites overlain by conglomerates, sandstones, and mudstones. Along the southern limb of the anticline, the sequence is replaced by reworked breccia, tuffs, and sandstones. Mafic plutonic rocks occur as xenoliths in the lavas and breccias, and as coeval plugs intruding the section. Gabbros show cumulate or porphyritic textures and are composed of amph, cpx, and zoned plag. Their Ti/V (14.5--15) and Nb/Y (0.25--0.3) ratios fall in the range commonly found in calc-alkaline rocks. Diorite porphyry shows high Al[sub 2]O[sub 3], ZrO[sub 2], and REE abundances indicating that this rock is more fractionated. Basalts and andesites are plag-cpx-opx phyric. They often include glomeroporphyritic clots of cpx with amph coronas. Some rocks exhibit fluidal textures. Both volcanic and plutonic rocks show homogeneous geochemical features and similar crystallization sequences: Fe-Ti oxides---->plag---->opx + cpx----> brown zoned hbl, suggesting that they are cogenetic. Thus, the lower part of the Black Dyke Fm. likely represents the final products formed in a calc-alkaline magma chamber because pyroclastic rocks prevail over lava flows and abundant early crystal cumulates occur as plugs or as inclusions in the lavas and breccias.

Blein, O.; Lapierre, H.; Pecher, A. (URA-CNRS, Grenoble (France)); Schweickert, R.A. (Univ. of Nevada, Reno, NV (United States). Dept. of Geological Science)

1993-04-01T23:59:59.000Z

272

UTh systematics of dispersed young volcanoes in NE China: Asthenosphere upwelling caused by piling up and upward thickening of stagnant Pacific slab  

E-Print Network [OSTI]

of California, Los Angeles, CA 90095, USA b Institute of Geology, China Earthquake Administration, Beijing 100029, China c Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China for investigating the mechanism of dispersed continental volcanism using short-lived uranium-series isotopes. We

273

Late Jurassic extension in the Bisbee basin: Marine and volcanic strata of the Chiricahua Mountains, Arizona  

SciTech Connect (OSTI)

Upper Jurassic strata in the northeastern Chiricahua Mountains provide unambiguous stratigraphic and geographic links between the Chihuahua trough of north-central Mexico and the Bisbee basin of southeastern Arizona. Approximately 1,800 m of limestone, shale, and mafic volcanic rocks overlie the Glance Conglomerate and underlie fluvial redbeds of the Lower Cretaceous Morita Formation. Basal strata are alluvial-fan and sabkha deposits. A thick (150 m), ammonite-bearing black shale interval above the sabkha deposits indicates an abrupt increase of water depths; deepening was accompanied initially by emplacement of subaerial basalt flows and subsequently by deposition of basaltic tuff and pillow lava. Ammonites are present both below and above the tuff and indicate its exclusively subaqueous origin. Arkosic deltaic deposits above the tuff were derived from Precambrian rocks of the footwall block to the northeast. At least 200 m of mafic subaerial flows, previously regarded as mid-Tertiary, overlie the deltaic deposits. The existence of a depleted mantle source beneath the Bisbee basin at 150 Ma suggests a unique tectonic setting that combined backarc and Gulf of Mexico extension.

Lawton, T.F.; McMillan, N.J. (New Mexico State Univ., Las Cruces, NM (United States)); Cameron, K.L. (Univ. of California, Santa Cruz, CA (United States). Earth Sciences Board)

1993-04-01T23:59:59.000Z

274

Analysis of fractures in volcanic cores from Pahute Mesa, Nevada Test Site  

SciTech Connect (OSTI)

The Nevada Test Site (NTS), located in Nye County, southern Nevada, was the location of 828 announced underground nuclear tests, conducted between 1951 and 1992. Approximately one-third of these tests were detonated near or below the water table. An unavoidable consequence of these testing activities was introducing radionuclides into the subsurface environment, impacting groundwater. Groundwater flows beneath the NTS almost exclusively through interconnected natural fractures in carbonate and volcanic rocks. Information about these fractures is necessary to determine hydrologic parameters for future Corrective Action Unit (CAU)-specific flow and transport models which will be used to support risk assessment calculations for the U.S. Department of Energy, Nevada Operations Office (DOE/NV) Underground Test Area (UGTA) remedial investigation. Fracture data are critical in reducing the uncertainty of the predictive capabilities of CAU-specific models because of their usefulness in generating hydraulic conductivity values and dispersion characteristics used in transport modeling. Specifically, fracture aperture and density (spacing) are needed to calculate the permeability anisotropy of the formations. Fracture mineralogy information is used qualitatively to evaluate diffusion and radionuclide retardation potential in transport modeling. All these data can best be collected through examination of core samples.

Drellack, S.L. Jr.; Prothro, L.B.; Roberson, K.E. [and others

1997-09-01T23:59:59.000Z

275

Lava Dome | Open Energy Information  

Open Energy Info (EERE)

"coulees." Volcanic domes commonly occur within the craters or on the flanks of large composite volcanoes. The nearly circular Novarupta Dome that formed during the 1912 eruption...

276

E-Print Network 3.0 - atmospheric elemental concentration Sample...  

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

- Department of Geography, University of North Texas Collection: Geosciences 4 Project EARTH-11-TM1: Volcanoes and the global atmospheric phosphorus cycle Summary: volcanic...

277

DOI: 10.1007/s00340-007-2858-5 Appl. Phys. B 90, 311315 (2008)  

E-Print Network [OSTI]

components of volcanic gases (carbon dioxide and sulfur dioxide) from a volcano can be used to provide early warning of a volcanic eruption. However, when hydrothermal or meteoric water systems are present

278

Investigation of the thermal regime and geologic history of the Cascade volcanic arc: First phase of a program for scientific drilling in the Cascade Range  

SciTech Connect (OSTI)

A phased, multihole drilling program with associated science is proposed as a means of furthering our understanding of the thermal regime and geologic history of the Cascade Range of Washington, Oregon, and northern California. The information obtained from drilling and ancillary geological and geophysical investigations will contribute to our knowledge in the following general areas: (1) the magnitude of the regional background heat flow of parts of the Quaternary volcanic belt dominated by the most abundant volcanic rock types, basalt and basaltic andesite; (2) the nature of the heat source responsible for the regional heat-flow anomaly; (3) the characteristics of the regional hydrothermal and cold-water circulation; the rates of volcanism for comparison with models for the rate and direction of plate convergence of the Cascades; (5) the history of deformation and volcanism in the volcanic arc that can be related to subduction; (6) the present-day stress regime of the volcanic arc and the relation of these stresses to plate interactions and possible large earthquakes; and the current geometry of the subducted oceanic plate below the Cascade Range and the relationship of the plate to the distribution of heat flow, Quaternary volcanism, and Quaternary deformation. Phase I research will be directed toward a detailed investigation of the Santiam Pass segment. In concert with the Santiam Pass research, a detailed study of the nearby Breitenbush Hot Springs area is also recommended as a component of Phase I. The object of the Breitenbush research is to study one of the hottest known Cascade hydrothermal systems, which coincidentally also has a good geological and geophysical data base. A coordinated program of drilling, sampling, subsurface measurements, and surface surveys will be associated with the drilling of several holes.

Priest, G.R.

1987-01-01T23:59:59.000Z

279

Analytical modeling of gravity changes and crustal deformation at volcanoes: The Long Valley caldera, California, case study  

Science Journals Connector (OSTI)

Joint measurements of ground deformation and micro-gravity changes are an indispensable component for any volcano monitoring strategy. A number of analytical mathematical models are available in the literature that can be used to fit geodetic data and infer source location, depth and density. Bootstrap statistical methods allow estimations of the range of the inferred parameters. Although analytical models often assume that the crust is elastic, homogenous and isotropic, they can take into account different source geometries, the influence of topography, and gravity background noise. The careful use of analytical models, together with high quality data sets, can produce valuable insights into the nature of the deformation/gravity source. Here we present a review of various modeling methods, and use the historical unrest at Long Valley caldera (California) from 1982 to 1999 to illustrate the practical application of analytical modeling and bootstrap to constrain the source of unrest. A key question is whether the unrest at Long Valley since the late 1970s can be explained without calling upon an intrusion of magma. The answer, apparently, is no. Our modeling indicates that the inflation source is a slightly tilted prolate ellipsoid (dip angle between 91° and 105°) at a depth of 6.5 to 7.9 km beneath the caldera resurgent dome with an aspect ratio between 0.44 and 0.60, a volume change from 0.161 to 0.173 km3 and a density of 1241 to 2093 kg/m3. The larger uncertainty of the density estimate reflects the higher noise of gravity measurements. These results are consistent with the intrusion of silicic magma with a significant amount of volatiles beneath the caldera resurgent dome.

M. Battaglia; D.P. Hill

2009-01-01T23:59:59.000Z

280

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

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

The Plio–Quaternary volcanic evolution of Gran Canaria based on new K–Ar ages and magnetostratigraphy  

Science Journals Connector (OSTI)

The combined use of radiometric dating (51 new unspiked K–Ar ages), magnetostratigraphy and field geology establishes a new time framework for the last two stages of the volcanic evolution of Gran Canaria. Most of the dated samples have ages coherent with their stratigraphic positions and magnetic polarities. Our new set of data extends the end of the Roque Nublo (RN) group, one of the main posterosive stages of Gran Canaria which started about 4.9 Ma ago, to ages as young as 2.87 Ma. This is about 0.7 Ma younger than previously thought. Moreover, the dating of samples collected in well-defined stratigraphic sequences supports the contemporaneity of the early stages of the post-Roque Nublo group and the vanishing activity of the Roque Nublo stratovolcano between 3.7 and 2.9 Ma. The multiple lateral collapses of the Roque Nublo stratovolcano occurred during this period between 3.5 and 3.1 Ma which corresponds to a main period of volcanic quiescence. After 2.9 Ma, the effusive activity propagated along a well-defined NW–SE rift until about 1.5 Ma, shifting progressively from a rifting propagation to platform-forming lavas. Thereafter, the activity is very disperse and belongs to the Brunhes period, with most of it before 500 ka.

Hervé Guillou; Francisco José Perez Torrado; Alex R Hansen Machin; Juan Carlos Carracedo; Domingo Gimeno

2004-01-01T23:59:59.000Z

282

Tsunami deposits related to flank collapse in oceanic volcanoes: The Agaete Valley evidence, Gran Canaria, Canary Islands  

Science Journals Connector (OSTI)

Enigmatic marine conglomerates are attached at 41–188 m asl to the walls of the valley of Agaete, on the northwest coast of Gran Canaria (Canary Islands). They are formed by heterogeneous, angular to rounded heterometric volcanic clasts (roundness and maximal size decreasing with altitude), and fossils (rhodolites and marine shells), never found in growth position and often broken. The deposits are internally stratified into several layers, most of them showing very poor sorting, matrix-supported and reverse grading. They present lenticular morphologies with poor lateral continuity in transversal and longitudinal sections. Slopes show values and orientations similar to those of the relief of the substratum to which they seem to adapt. Although they show clear evidence of erosive contact with the substratum (rip up clasts), they do not tend to form horizontal terraces. Soft materials (soils and colluviums) are preserved in the contact with the substratum in outcrops with deposit slopes of up to 15°. The age of the deposits is constrained between 1.75 Ma and 32 ka. Their altitude and slope distributions are not related to Pleistocene interglacial sea level changes, storm deposits or isostatic movements. All the above suggests that the Agaete marine deposits were generated by tsunami waves, the most probable source being a flank failure, at least nine major such events having occurred in the Canary Islands during the Pleistocene. The Güímar sector collapse (east coast of Tenerife, 30 km3) is the closest possible source for the tsunami and the sole flank failure that is directed towards another island in the Canaries.

Francisco J. Pérez-Torrado; Raphaël Paris; María C. Cabrera; Jean-Luc Schneider; Patrick Wassmer; Juan-Carlos Carracedo; Ángel Rodríguez-Santana; Francisco Santana

2006-01-01T23:59:59.000Z

283

Newberry Volcano EGS Demonstration  

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

modeling of commercial-scale EGS wellfield and power plant Primary Goals * Create EGS fracture network around existing borehole * Drill two production wells into mapped fracture...

284

Energetics of gas-driven limnic and volcanic eruptions Department of Geological Sciences, The University of Michigan, Ann Arbor, MI 48109-1063, USA  

E-Print Network [OSTI]

Energetics of gas-driven limnic and volcanic eruptions Y. Zhang* Department of Geological Sciences for the rigorous treatment of the energetics of gas exsolution from a gas-containing liquid, which powers gas) are discussed, and the maximum amount of kinetic energy derivable from a reversible gas exsolution process

Zhang, Youxue

285

Review of Evidence on the Potential for Major Earthquakes and Volcanism in the Long Valley-Mono Craters-White Mountains Regions of Eastern California  

Science Journals Connector (OSTI)

The Long Valley-Mono Craters region of eastern California lies ... volcanic centers of late-Quaternary age. The Long Valley-Mono Craters region stands out in this...M...6.8 to 8.0) have occurred along the eastern...

David P. Hill; Robert E. Wallace…

1985-01-01T23:59:59.000Z

286

Volcanic stratigraphy and a kinematic analysis of NE-trending faults of Allens Ranch 7.5' quadrangle, Utah County, Utah  

E-Print Network [OSTI]

) differential shortening during progressive orocline development, (2) the pre-deformational Pennsylvanian. Conversely, mixed paleostress directions for the north-trending Tintic Davis Canyon fault show it is a Basin cutting Lake Bonneville deposits. An Oligocene to Miocene suite of extrusive volcanic units

Seamons, Kent E.

287

Sulfur Emissions from Volcanic A c t i v i t y i n 1985 and 1990 Carmen M. Benkovitz and M. A l t a f Mubaraki  

E-Print Network [OSTI]

APPENDIX C Sulfur Emissions from Volcanic A c t i v i t y i n 1985 and 1990 Carmen M. Benkovitz). Global estimates o f anthropogenic emissions o f sulfur f o r 1985 are approximately 65 Tg S y-l (Benkovi Anthropogenic Sulfur Emissions f o r 1985 and 1990 i n t h i s report). Sulfur from biogenic sources i s emitted

288

Interaction between mantle-derived and crustal calc-alkaline magmas in the petrogenesis of the Paleocene Sifton Range volcanic complex, Yukon, Canada  

Science Journals Connector (OSTI)

The uplifted plutons of the eastern Coast Plutonic Complex (CPC) of the northern Canadian Cordillera are in contact with coeval volcanic suites of the early Tertiary Sloko-Skukum Group, offering a unique opportunity to address the relationship between subduction-related, continental calc-alkaline volcanic sequences and their coeval granitoid suites. The Sifton Range volcanic complex (SRVC) of southwestern Yukon is intruded by CPC granites and displays a subduction-related geochemical signature with depletions in HFSE relative to LILE. The volcanic rocks range between medium- and high-K orogenic suites, and define a calc-alkaline fractionation trend. The epizonal potassium–feldspar granites are chemically similar to the SRVC rhyolites, and are characterized by highly fractionated LREE (LaN / SmN = 5–11), enrichments in LILE and Th (12–18 ppm). The SRVC exhibits a striking relationship between rock composition and style of eruption, with a reduction in abundance of lavas with increasing SiO2 being correlated with the appearance of felsic pyroclastic rocks and granitic plutonism. Thermodynamic crystal fractionation models of the compositional interval between basaltic and dacitic andesite (52–61 wt.% SiO2) are consistent with evolution at moderately hydrous (1.5 wt.% H2O), upper crustal (1.5 kbar) conditions, and fO2 close to the QFM buffer. Neither assimilation-fractional crystallization (AFC), nor binary magma mixing models are capable of explaining the anomalously elevated Th contents in the SRVC felsic lavas and granites. Furthermore, unrealistically high contamination factors (r > 2.5) are required in AFC models to attain the incompatible-element concentrations of the SRVC granite and rhyolites, suggesting they represent distinct melts derived by anatexis of enriched upper crust, rather than the evolved products of the mafic SRVC magma. Changes in crystallinity during evolution of the SRVC magmas imply an abrupt rise in effective viscosity (from 106 to 1010 Pa s) near the andesite–dacite transition as a result of the flocculation of plagioclase phenocrysts. The resultant increase in shear strength impeded crystal fractionation and eruption of lavas, and may account for the decrease in the abundance of flows with more than 62 wt.% SiO2. The onset of explosive volcanism at c.a. 68 wt.% SiO2 approximately coincides with the calculated saturation point of H2O at 1.5 kbar in the hybridized dacite magmas. Alternating mafic and felsic volcanic stratigraphy along with the presence of compositionally bimodal pyroclastics and mixed phenocrysts in the SRVC dacites suggest that mantle-derived magmas and crustal melts coexisted in a zoned magmatic column undergoing episodic injection of juvenile melts. Sudden release of volatiles from the hybrid dacitic magmas along the interface with the overlying anatectic crystal mush may have triggered the cycle of explosive eruptions of dominantly rhyolitic ejecta. The consequent loss of volatiles further promoted feldspar crystallization eventually favouring magma stagnation and plutonism.

Aleksandar Miškovi?; Don Francis

2006-01-01T23:59:59.000Z

289

A Case Study of Wide Diameter Casing for Geothermal Systems  

SciTech Connect (OSTI)

Three wells have been drilled in the central resistivity area of a geothermal field in the Taupo Volcanic Zone, New Zealand. Using a well bore simulator, WELL SIM V3.0, reservoir conditions and well characteristics are evaluated to determine the increase in output by increasing production casing diameters from either 8-5/8 inches OD or 9-5/8 inches OD to 13-3/8 inches OD. Increases in well drilling costs are determined to provide a commentary on the economics. While open hole size is effectively doubled, well costs increase by 10% and, in this study, output increases by an average of 18%.

King, T.R.; Freeston, D.H.; Winmill, R.L.

1995-01-01T23:59:59.000Z

290

Electricity in Volcanic Clouds  

Science Journals Connector (OSTI)

...jets was often about 150 m/sec. From aerial views of the crater we have estimated...from Bjornsson's observations, so the aerial and surface observations immediately downwind...1958); T. Nagata, K. Hirao, N. Fukushima, T. Takashima, Bull. EarthquakeRes...

Robert Anderson; Stuart Gathman; James Hughes; Sveinbjörn Björnsson; Sigurgeir Jónasson; Duncan C. Blanchard; Charles B. Moore; Henry J. Survilas; Bernard Vonnegut

1965-05-28T23:59:59.000Z

291

Electricity in Volcanic Clouds  

Science Journals Connector (OSTI)

...the solid material ejected was still airborne and while much of it was moving upward...greater than 10 m3/ sec and a small fraction of that esti-mated from the growth...average thunder-storm the rate of energy release from the heat of the condensing water...

Robert Anderson; Stuart Gathman; James Hughes; Sveinbjörn Björnsson; Sigurgeir Jónasson; Duncan C. Blanchard; Charles B. Moore; Henry J. Survilas; Bernard Vonnegut

1965-05-28T23:59:59.000Z

292

Geochronological, geochemical and Sr–Nd–Hf isotopic constraints on the origin of the Cretaceous intraplate volcanism in West Qinling, Central China: Implications for asthenosphere–lithosphere interaction  

Science Journals Connector (OSTI)

Abstract This paper reports new zircon LA-ICP-MS \\{UPb\\} age and Lu-Hf isotopes, laser-fusion 40Ar/39Ar age, mineral chemistry, bulk-rock major and trace element, and SrNd isotope data from intraplate volcanic rocks in the Duofuntun Area, West Qinling. It was dated at 105.8 ± 0.9 Ma (UPb Zircon) and 103 ± 2 Ma (matrix glass laser-fusion 40Ar/39Ar dating). The Duofuntun Volcanic Rocks (DVR) are dominantly composed of alkali basalts with minor basanites and basaltic andesites. Some evolved samples of the DVR underwent a variable fractionation of olivine, clinopyroxene, plagioclase, FeTi oxide, Cr-rich spinel and apatite. Chondrite-normalized rare earth element and primitive mantle-normalized trace element patterns of the DVR remarkably resemble those of oceanic island basalts (OIB). Nearly all the alkali basalts show positive Nb, Ta and Ti anomalies and negative Rb, Th and P anomalies, whereas basanites do not display positive Ti anomalies. Nearly all the samples show marked negative Rb and K anomalies relative to their neighbouring elements on a primitive mantle normalized trace element diagram. 87Sr/86Sr(i) and 143Nd/144Nd(i) ratios for all the mafic samples also show an OIB affinity, covering a range of 0.703264–0.705032 and 0.512718–0.512873, respectively. Several lines of evidence indicate that both garnet and amphibole play a key role for the genesis of the DVR. The melt segregation PT conditions in the source region, around 1371 °C at 1.98–3.25 GPa, combined with trace element collectively suggest a polybaric melting process during the formation of the DVR. The non-modal batch partial melting modelling result indicates the DVR were generated by small-degree polybaric partial melting of amphibole-bearing spinel peridotites (ca. 4%) and amphibole-bearing garnet peridotites (ca. 0.7%). We suggest the DVR were not formed in a plume. Rather, they originated by the interaction between the upwelling asthenosphere, which might provide both materials and heat flux, and hydrous mineral-bearing (amphibole) lithosphere during lithospheric extension.

Xiao-Wei Li; Xuan-Xue Mo; Xue-Hui Yu; Yi Ding; Xiong-Fei Huang; Ping Wei; Wen-Yan He

2013-01-01T23:59:59.000Z

293

Pollen Influx and Volcanic Ash  

Science Journals Connector (OSTI)

...Artemisia) blooms in the fall and a dis-proportionate percentage...were recorded. The five pollen groups plotted in Fig. 5 were selected...expected to occur during the fall and perhaps winter months...probability of an initial ash-fall in late summer. Certain acid-resist-ant...

Peter J. Mehringer Jr.; Eric Blinman; Kenneth L. Petersen

1977-10-21T23:59:59.000Z

294

Mann, C.P., Stix, J., Vallance, J.W., and Richer, M., 2004, Subaqueous intracaldera volcanism, Ilopango Caldera, El Salvador, Central America, in Rose, W.I., Bommer, J.J., Lpez, D.L., Carr, M.J., and Major, J.J., eds., Natural hazards in El Salvador: Boul  

E-Print Network [OSTI]

, Ilopango Caldera, El Salvador, Central America, in Rose, W.I., Bommer, J.J., López, D.L., Carr, M.J., and Major, J.J., eds., Natural hazards in El Salvador: Boulder, Colorado, Geological Society of America of America Special Paper 375 2004 Subaqueous intracaldera volcanism, Ilopango Caldera, El Salvador, Central

Long, Bernard

295

An Integrated Model For The Temporal Evolution Of Andesites And Rhyolites  

Open Energy Info (EERE)

Model For The Temporal Evolution Of Andesites And Rhyolites Model For The Temporal Evolution Of Andesites And Rhyolites And Crustal Development In New Zealand'S North Island Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Integrated Model For The Temporal Evolution Of Andesites And Rhyolites And Crustal Development In New Zealand'S North Island Details Activities (0) Areas (0) Regions (0) Abstract: The Taupo Volcanic Zone (TVZ) is the southern expression of the Tonga-Kermadec subduction system within the continental crust of New Zealand's North Island. It is a region of rapid extension and high heat flow containing one of the most productive, frequently active rhyolitic magmatic systems on Earth. Rhyolites make up >80% of the total erupted material with rhyolitic magmatism being prevalent from the earliest stages

296

PALEOMAGNETIC DATING OF THE CERRO PRIETO VOLCANO  

E-Print Network [OSTI]

geothermal areas of Imperial Valley, California, & Proc. ,geothermal f i e l d , Imperial Valley, California: Bull.t h e Salton Sea, Imperial Valley Mexicali Yalley and Gulf

Boer, Jelle De

2009-01-01T23:59:59.000Z

297

PALEOMAGNETIC DATING OF THE CERRO PRIETO VOLCANO  

E-Print Network [OSTI]

in geothermal areas of Imperial Valley, California, &Sea geothermal f i e l d , Imperial Valley, California:

Boer, Jelle De

2009-01-01T23:59:59.000Z

298

Volcano on Jan Mayen Alive Again  

Science Journals Connector (OSTI)

... long fracture (Fig. 1) with five main parasitic crater centres. Geologists from the Norsk Polarinstitutt were rushed to the island and are observing the activity from land, sea ...

TORE GJELSVIK

1970-10-24T23:59:59.000Z

299

Haleakala Volcano Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Date: Well Name: Location: Depth: Initial Flow Rate: "cf" is not declared as a valid unit of measurement for this property. The given value was not understood. Flow Test...

300

PALEOMAGNETIC DATING OF THE CERRO PRIETO VOLCANO  

E-Print Network [OSTI]

OF ENERGY Division of Geothermal Energy United States of AmEnergy, Division of Geothermal Energy, *der contract W-7405-Development I of Geothermal Energy Resources, California: Q

Boer, Jelle De

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

The formation of volcanic centers at the Colorado Plateau as a result of the passage of aqueous fluid through the oceanic lithosphere and the subcontinental mantle: New implications for the planetary water cycle in the western United States  

Science Journals Connector (OSTI)

We provide new petrological evidence for the strong influence of water on the formation of the oceanic lithospheric mantle, the subcontinental mantle above, and the continental lithosphere. Our analysis throws new light on the hypothesis that new continental lithosphere was formed by the passage of silicate-rich aqueous fluid through the sub-continental mantle. In order to investigate this hypothesis, we analyzed a representative collection of lherzolite and harzburgite xenoliths from the sample volcano known as “The Thumb”, located in the center of the Colorado Plateau, western United States. The studied sample collection exhibits multi-stage water enrichment processes along point, line and planar defect structures in nominally anhydrous minerals and the subsequent formation of the serpentine polymorph antigorite along grain boundaries and in totally embedded annealed cracks. Planar defect structures act like monomineralic and interphase grain boundaries in the oceanic lithosphere and the subcontinental mantle beneath the North American plate, which was hydrated by the ancient oceanic Farallon plate during the Cenozoic and Mesozoic eras. We used microspectroscopical, petrological, and seismological techniques to confirm multi-stage hydration from a depth of ?150 km to just below the Moho depth. High-resolution mapping of the water distribution over homogeneous areas and fully embedded point, line and planar defects in olivine crystals of lherzolitic and harzburgitic origin by synchrotron infrared microspectroscopy enabled us to resolve local wet spots and thus reconstruct the hydration process occurring at a depth of ?150 km (T ? 1225 °C). These lherzolites originated from the middle part of the Farallon mantle slab; they were released during the break up of the Farallon mantle slab, caused by the instability of the dipping slab. The background hydration levels in homogeneous olivines reached ?138 ppm wt H2O, and the water concentration at the planar defects could reach up to ?1000 ppm wt H2O. However, the formation of antigorite in grain boundaries was found to be the primary hydration mechanism for harzburgitic samples originating from the subcontinental mantle (for hydration, T ? 600 °C). Additionally, the formation of antigorite in lherzolites could be found in annealed cracks. From these observations, we conclude that hydration induces multi-stage water enrichment of the mantle wedge by a process that is dominated by the growth and movement of ubiquitous cracks, which acts as planar defects. Cracks in the mantle seem to be the an important feature in both the water cycle of the subduction zone and the formation of the continental lithosphere.

Holger Sommer; Klaus Regenauer-Lieb; Biliana Gasharova; Haemyeong Jung

2012-01-01T23:59:59.000Z

302

U.S. Department of the Interior U.S. Geological Survey  

E-Print Network [OSTI]

moni- tored geologic unrest in Long Valley Caldera and at adjacent Mammoth Mountain, California. After)isshownindarkershadesofgreen. Mammoth Mountain is a young volcano on the southwest rim of Long Valley Caldera, a large volcanic depression in eastern California. The Long Valley area, well known for its superb skiing, hiking, and camping

Torgersen, Christian

303

A Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres,  

Open Energy Info (EERE)

Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Northwestern Spitsbergen- Volcanology And Tectonic Significance Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Northwestern Spitsbergen- Volcanology And Tectonic Significance Details Activities (0) Areas (0) Regions (0) Abstract: Three Quaternary volcanic centres (Sverrefjell, Sigurdfjell and Halvdanpiggen) in northwestern Spitsbergen formed by off-ridge alkali basaltic volcanism associated with nearby ocean-floor spreading and subsequent tectonism. The Sverrefjell volcano is a unique stratovolcano constructed of primitive alkali basaltic pyroclastics with subordinate lavas. About 15-20 vol.% of this volcanic (and the other centres) comprises

304

An Integrated Mapping And Remote Sensing Investigation Of The Structural  

Open Energy Info (EERE)

Mapping And Remote Sensing Investigation Of The Structural Mapping And Remote Sensing Investigation Of The Structural Control For Fumarole Location In The Eburru Volcanic Complex, Kenya Rift Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: An Integrated Mapping And Remote Sensing Investigation Of The Structural Control For Fumarole Location In The Eburru Volcanic Complex, Kenya Rift Details Activities (0) Areas (0) Regions (0) Abstract: The Eburru volcanic complex is located in the central portion of the Kenya Rift. It belongs to the complex of volcanoes - Suswa, Longonot, Olkaria, Eburru, and Menengai - that. form the Kenya Dome. These volcanoes are geothermal fields, and Olkaria is the site for the first geothermal power plant commissioned in 1981 in the East African Rift System (EARS).

305

Global Increase in Quaternary Explosive Volcanism  

Science Journals Connector (OSTI)

...African rift val-ley, for more than 1500 km from Ethiopia to Tanzania (46, 47). At least in southern Ethiopia, this was preceded...arguments exist to show that eruptions may be triggered and solar tidal stress (67, 68) some workers have considered relations...

James P. Kennett; Robert C. Thunell

1975-02-14T23:59:59.000Z

306

Trachyandesitic volcanism in the early Solar System  

Science Journals Connector (OSTI)

...October 7, 2008, in the Nubian Desert, Sudan, containing various ureilitic and ureilite-related fragments...UPB cannot be directly estimated, the thermal history of the ureilites indicates that their...Wilson L Goodrich CA Van Orman JA ( 2008 ) Thermal evolution and physics of melt extraction...

Addi Bischoff; Marian Horstmann; Jean-Alix Barrat; Marc Chaussidon; Andreas Pack; Daniel Herwartz; Dustin Ward; Christian Vollmer; Stephan Decker

2014-01-01T23:59:59.000Z

307

Mantle updrafts and mechanisms of oceanic volcanism  

Science Journals Connector (OSTI)

...internal heating and variable surface insulation. Internal boundary layers are the results...tectonic processes such as large-plate insulation and slab cooling and is enough to cause shallow...some olivine literally crystallized in foam (12). Recently, segregation of sulphides...

Don L. Anderson; James H. Natland

2014-01-01T23:59:59.000Z

308

Volcanism in Mexico and Central America  

Science Journals Connector (OSTI)

...developments and future prospects of geothermal power in this region. R. W. DEcKER...tissues and micro-organisms without heating, without ionization and without high...Sewickley, Pa. 15143 (Pittsburgh District).-MMMWA%h 1*4%0. I k-1 (

R. W. Decker

1973-03-16T23:59:59.000Z

309

Geothermal Literature Review At International Geothermal Area...  

Open Energy Info (EERE)

Taupo, North Island, re: Heat Flow References G. Ranalli, L. Rybach (2005) Heat Flow, Heat Transfer And Lithosphere Rheology In Geothermal Areas- Features And Examples...

310

E-Print Network 3.0 - acidic geothermal environments Sample Search...  

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

fluids in New Zealand (e.g., Waiotapu, Orakeikorako... Concentrations of rare earth elements (REE) in acidic thermal waters from the Taupo ... Source: Wood, Scott A. -...

311

Geologic factors controlling patterns of small-volume basaltic volcanism: Application to a volcanic hazards assessment  

E-Print Network [OSTI]

hazards assessment at Yucca Mountain, Nevada Charles B. Connor,1 John A. Stamatakos,1 David A. Ferrill,1 are often required for facilities, such as nuclear power plants and high-level radioactive waste ­105 years [e.g., Krauskopf, 1988; U.S. Nuclear Waste Technical Review Board, 1994; U.S. National

Connor, Charles

312

Geothermal areas as analogues to chemical processes in the near-field and altered zone of the potential Yucca Mountain, Nevada repository  

SciTech Connect (OSTI)

The need to bound system performance of the potential Yucca Mountain repository for thousands of years after emplacement of high-level nuclear waste requires the use of computer codes. The use of such codes to produce reliable bounds over such long time periods must be tested using long-lived natural and historical systems as analogues. The geothermal systems of the Taupo Volcanic Zone (TVZ) in New Zealand were selected as the site most amenable to study. The rocks of the TVZ are silicic volcanics that are similar in composition to Yucca Mountain. The area has been subjected to temperatures of 25 to 300 C which have produced a variety of secondary minerals similar to those anticipated at Yucca Mountain. The availability of rocks, fluids and fabricated materials for sampling is excellent because of widespread exploitation of the systems for geothermal power. Current work has focused on testing the ability of the EQ3/6 code and thermodynamic data base to describe mineral-fluid relations at elevated temperatures. Welfare starting long-term dissolution/corrosion tests of rocks, minerals and manufactured materials in natural thermal features in order to compare laboratory rates with field-derived rates. Available field data on rates of silica precipitation from heated fluids have been analyzed and compared to laboratory rates. New sets of precipitation experiments are being planned. The microbially influenced degradation of concrete in the Broadlands-Ohaaki geothermal field is being characterized. The authors will continue to work on these projects in FY 1996 and expand to include the study of naturally occurring uranium and thorium series radionuclides, as a prelude to studying radionuclide migration in heated silicic volcanic rocks. 32 refs.

Bruton, C.J.; Glassley, W.E.; Meike, A.

1995-02-01T23:59:59.000Z

313

Mantle Helium And Carbon Isotopes In Separation Creek Geothermal Springs,  

Open Energy Info (EERE)

Mantle Helium And Carbon Isotopes In Separation Creek Geothermal Springs, Mantle Helium And Carbon Isotopes In Separation Creek Geothermal Springs, Three Sisters Area, Central Oregon- Evidence For Renewed Volcanic Activity Or A Long Term Steady State System(Question) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Mantle Helium And Carbon Isotopes In Separation Creek Geothermal Springs, Three Sisters Area, Central Oregon- Evidence For Renewed Volcanic Activity Or A Long Term Steady State System(Question) Details Activities (1) Areas (1) Regions (0) Abstract: Here we present the helium and carbon isotope results from the initial study of a fluid chemistry-monitoring program started in the summer of 2001 near the South Sister volcano in central Oregon. The Separation Creek area which is several miles due west of the volcano is the locus of

314

Is Mercury from Hawaiian Volcanoes a Natural Source of Pollution?  

Science Journals Connector (OSTI)

... ml. with distilled water. Portions of 20 ml. were analysed for mercury content by flameless atomic absorption at the 253.65 nm resonance line. We used a Utopia Instruments ... atomic absorption at the 253.65 nm resonance line. We used a Utopia Instruments flameless mercury analysis kit6 and a 10 cm absorption cell mounted on the burner of a ...

ALAN ESHLEMAN; SANFORD M. SIEGEL; BARBARA Z. SIEGEL

1971-10-15T23:59:59.000Z

315

G188 Research Paper Volcano Tourism: Hazards and Mitigation  

E-Print Network [OSTI]

, is a prime area for geotourism. Geotourism is a branch of tourism stemming from ecotourism and sustainable residents." While geotourism is a relatively new form of tourism, it derives from ecotourism and sustainable

Polly, David

316

Aster Watches The World'S Volcanoes- A New Paradigm For Volcanological...  

Open Energy Info (EERE)

backward-looking visible channel telescope for stereo-photogrammetric observations. The spatial resolutions are 15 mpixel in the visible, 30 mpixel in the near-IR, and 90 m...

317

Structural stability of andesite volcanoes and lava domes  

Science Journals Connector (OSTI)

...limit equilibrium analysis (LEA) methods...high degree of reliability. The principles...quantitative stability analyses developed. It...highly uncertain reliability. By mid-May...Finite element analysis of deformation...Structural Mechanics Reactor Technology, Chicago...

2000-01-01T23:59:59.000Z

318

EGGERTJOHANNESSON/AP Iceland's Brarbunga volcano erupted on  

E-Print Network [OSTI]

-cigarette reports Electronic cigarettes need more-stringent regulations, the World Health Organization (WHO) said until there is more evidence of the devices' safety and the health risks are better understood by the Association for Assessment and Accreditation of Laboratory Animal Care (AAALAC) International violate animal

Napp, Nils

319

Short communication Observations of eruptive activity at Santiaguito volcano, Guatemala  

E-Print Network [OSTI]

, correlated with measured extrusion rates, suggest an incremental plug flow through the conduit. Bubble to changes in pressure and composition. Bubble nucleation, growth, deformation, and fragmen- tation): information about the conduit shape and size; the stability of the conduit during an eruption, and over longer

Rose, William I.

320

Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone  

Open Energy Info (EERE)

Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone Of Kilauea Volcano, Hawaii Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone Of Kilauea Volcano, Hawaii Details Activities (3) Areas (1) Regions (0) Abstract: Multichannel seismic reflection, sonobuoy, gravity and magnetics data collected over the submarine length of the 75 km long Puna Ridge, Hawaii, resolve the internal structure of the active rift zone. Laterally continuous reflections are imaged deep beneath the axis of the East Rift Zone (ERZ) of Kilauea Volcano. We interpret these reflections as a layer of abyssal sediments lying beneath the volcanic edifice of Kilauea. Early

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

A Study Of Scale Deposition- An Analogue Of Meso- To Epithermal Ore  

Open Energy Info (EERE)

Study Of Scale Deposition- An Analogue Of Meso- To Epithermal Ore Study Of Scale Deposition- An Analogue Of Meso- To Epithermal Ore Formation In The Volcano Of Milos, Aegean Arc, Greece Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Study Of Scale Deposition- An Analogue Of Meso- To Epithermal Ore Formation In The Volcano Of Milos, Aegean Arc, Greece Details Activities (0) Areas (0) Regions (0) Abstract: The viability of boiling as a mechanism for meso- to epithermal ore formation has been tested in the Milos volcano, Aegean Island Arc, by investigating rates of deposition and composition of scale, and by drawing an analogy between the results and actual field occurrences on the island. Milos offers ideal conditions for such testing: it consists of predominantly felsic volcanic rocks with numerous late-stage hydrovolcanic

322

Definition: Cinder Cone | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Cinder Cone Jump to: navigation, search Dictionary.png Cinder Cone Cinder cones, also known as scoria or spatter cones, are a relatively simple type of volcano consisting of a steep conical pile of volcanic ash and tephra. They exhibit a lower profile than stratovolcanoes (usually rising no more than a thousand feet above the surrounding topography), and typically have a bowl-shaped depression at their summits. They form primarily from the eruption of pyroclastic ejecta and are commonly encountered on the flanks of stratovolcanoes, shield volcanoes, and calderas.[2] View on Wikipedia Wikipedia Definition Also Known As Scoria Cones, Spatter Cones References ↑ John Watson. Principal Types of Volcanoes [Internet]. 2011. U.S.

323

Viscosity Control of the Composition of Ocean Floor Volcanics  

Science Journals Connector (OSTI)

4 February 1971 research-article Viscosity Control of the Composition of Ocean Floor...environment. Instead it is postulated that the viscosity exercises a control by limiting the range...magmas (to those with a sufficiently low viscosity) which is capable of penetrating the...

1971-01-01T23:59:59.000Z

324

The effects and consequences of very large explosive volcanic eruptions  

Science Journals Connector (OSTI)

...while ash still airborne (days to ?weeks); problems with landing and take-off until airports cleared. power generation-effects...doi:10.1038/373399a0 . Morrison, D 2006Asteroid and comet impacts: the ultimate environmental catastrophe. Phil. Trans...

2006-01-01T23:59:59.000Z

325

Carmichael, I.S.E. Landmark Papers: Volcanic Petrology.:  

Science Journals Connector (OSTI)

...in any discussion of igneous or crystalline basement rocks. Nick Petford's excellent paper examines the controls on the development...between earth and life can be properly understood. G. M. GADD Merritt, J.W., Auton, C.A., Connell, E.R., Hall, A...

A. C. Kerr

326

Seismic and infrasonic source processes in volcanic fluid systems  

E-Print Network [OSTI]

the crater. Figure 4.4b is a FLIR infrared image of the 16-is estimated at 300-400 m. (b) FLIR infrared image of 16-17

Matoza, Robin S.

2009-01-01T23:59:59.000Z

327

Geothermometry At Lassen Volcanic National Park Area (Janik ...  

Open Energy Info (EERE)

but are within the 220-240 degrees C range calculated using cation, sulfate-water isotope, and mixing model geothermometers (Muffler et al., 1982). References (Unknown)...

328

Compound and Elemental Analysis At Lassen Volcanic National Park...  

Open Energy Info (EERE)

but are within the 220-240 degrees C range calculated using cation, sulfate-water isotope, and mixing model geothermometers (Muffler et al., 1982). In Table 1,we include many...

329

Ophiolite and island-arc volcanism in Costa Rica  

Science Journals Connector (OSTI)

...Apartado Postal 35, Ciudad Universitaria Rodrigo Facio, Costa Rica The Pacific margin...Apartado Postal 35, Ciudad Universitaria "Rodrigo Facio," Costa Rica ABSTRACT The Pacific...Distrito de Tonos , Provincia de Los Santos, Panam [Licenciado thesis]: San Jos...

330

Overview Of Electromagnetic Methods Applied In Active Volcanic...  

Open Energy Info (EERE)

areas in the United States through electromagnetic geophysical studies received foundation from the many surveys done for geothermal exploration in the 1970's. Investigations...

331

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

332

Volcanic source for fixed nitrogen in the early Earth's atmosphere  

Science Journals Connector (OSTI)

...for CO2 mol fractions of 40. In contrast...Archean would release thermal energy...by extensive fire fountaining at...J., 1991, Airborne measurements...responsible for a small fraction of current production...Archean would release thermal energy...by extensive fire foun-taining...

333

The effects and consequences of very large explosive volcanic eruptions  

Science Journals Connector (OSTI)

...than one per 10000 years for the upper end (figure 3). Global average frequencies...atmosphere (McCormick et al. 1995). By the end of 1991, spreading polewards, the aerosol...3) are almost entirely detrimental to humankind in the short term. These range from roof...

2006-01-01T23:59:59.000Z

334

Volcanic eruption through a geothermal borehole at Námafjall, Iceland  

Science Journals Connector (OSTI)

... THE eruption on 8 September 1977 in the Nmaf jail geothermal field was a part of a rifting event that took place during that day, ... the main rifting took place south of the caldera, just north of the Nmaf jail geothermal field. We give here a short account of this event and the borehole eruption. ...

Gudrún Larsen; Karl Grönvold; Sigurdur Thorarinsson

1979-04-19T23:59:59.000Z

335

The Palaeomagnetism of the Antrim Plateau Volcanics of Northern Australia  

Science Journals Connector (OSTI)

......unchanged position just south of the Australian Bight from the Upper Carboniferous to the mid-Cretaceous...the southern part of the Bonaparte Gulf Basin, Bur. Miner. Resour. Geol. Geophys...geology of the northern part of the Wiso Basin, Northern Territory, Bull. Bur. Miner......

M. W. McElbinny; G. R. Luck

1970-08-01T23:59:59.000Z

336

A Morphometric Analysis Of The Submarine Volcanic Ridge South...  

Open Energy Info (EERE)

constructed over a wide range of ocean depths along the Pico Ridge. Using bathymetric data and Towed Ocean Bottom Instrument (TOBI) side-scan sonar imagery, we measured the...

337

Active System For Monitoring Volcanic Activity- A Case Study...  

Open Energy Info (EERE)

andor the electronic circuits have also been solved during this field experiment. For data interpretation, a three-dimensional (3-D) forward modeling code was built to...

338

Late Cenozoic volcanism, geochronology, and structure of the...  

Open Energy Info (EERE)

by various geophysical anomalies that are evidently related to an active hot-water geothermal system. This system apparently is heated by a reservoir of silicic magma...

339

Seismic tomography of the Tongariro Volcanic Centre, New Zealand  

Science Journals Connector (OSTI)

......the east due to the prevailing westerly wind direction. This probably occurs in conjunction...Maori iwi, Rangipo Prison and several farm owners. This paper benefitted from helpful...in north Chile: a combined onshore and offshore study, J. geophys. Res.,105,28......

D. P. Rowlands; R. S. White; A. J. Haines

2005-12-01T23:59:59.000Z

340

Seismic and infrasonic source processes in volcanic fluid systems  

E-Print Network [OSTI]

A broadband seismic and infrasound array deployment at MountNumerical experiments . . . . . . . .1. Seismic- acousticFigure 3.2: Infrasonic and seismic waveforms at CDWR for an

Matoza, Robin S.

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Petrological and rheological controls on volcanism to terrestrial planets  

E-Print Network [OSTI]

Through experimental petrology and geodynamic modeling, processes of melting under thick lithospheres on the Earth and the moon are investigated. Phase equilibrium experiments were carried out on Apollo 14B and 15C picritic ...

Elkins Tanton, Linda Tarbox, 1965-

2002-01-01T23:59:59.000Z

342

Effects of Lake Fertilization by Volcanic Activity on Abundance of ...  

Science Journals Connector (OSTI)

Fish and Wildlife Service. Woods IIole ... in other regions. The fine material is carried by the wind for ... in 1883 and depending on the wind direction probably ...

1999-12-13T23:59:59.000Z

343

Thursday, March 26, 2009 POSTER SESSION II: MARS: VOLCANISM  

E-Print Network [OSTI]

complexes on Mars. We propose that they were formed by hydrothermal venting processes similar. Lanz J. K. Saric M. B. Possible Traces of Hydrothermal Venting in Aeolis Planum, Mars [#1014] We have to hydrothermal vent complexes on Earth. Kerber L. Head J. W. Madeleine J. B. Forget F. Wilson L. The Dispersal

Rathbun, Julie A.

344

San Francisco Volcanic Field Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Date: Well Name: Location: Depth: Initial Flow Rate: "c" is not declared as a valid unit of measurement for this property. The given value was not understood. Flow Test...

345

The Eyjafjallajökull volcanic system, Iceland: insights from electromagnetic measurements  

Science Journals Connector (OSTI)

......Proceedings of the 67th Ann. Internat. Mtg. Soc. of Expl. Geophys. (1997) 382-385...Saemundsson K. Heat flow and geothermal processes in Iceland. Tectonophysics (1993) 225...technique. Proceedings of the 54th Ann. Mtg. Soc. of Expl. Geophys. (1984) Atlanta......

Marion P. Miensopust; Alan G. Jones; Gylfi Páll Hersir; Arnar M. Vilhjálmsson

2014-01-01T23:59:59.000Z

346

Stratigraphic Nomenclature of Volcanic Rocks in the Jemez Mountains...  

Open Energy Info (EERE)

the formations are refined by radiometric dating. Authors Roy A. Bailey, Robert Leland Smith and Clarence Samuel Ross Published U.S. Geological Survey, 1969 DOI Not Provided Check...

347

Collection and Analysis of Geothermal and Volcanic Water and...  

Open Energy Info (EERE)

and R.L. Goguel Published Department of Scientific and Industrial Research, Chemistry Division, 1989 Report Number CD 2401 DOI Not Provided Check for DOI availability:...

348

Data Acquisition-Manipulation At San Francisco Volcanic Field...  

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...

349

Ground Gravity Survey 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...

350

Field Mapping 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...

351

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...

352

Ground Magnetics 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...

353

Galápagos Flora: Fernandina (Narborough) Caldera before Recent Volcanic Event  

Science Journals Connector (OSTI)

...stellerite (0.25 by 0.25 by 0.6 mm) was selected from a purified sample collected at a new occurrence near Chena Hot Springs, Alaska. The chemical analysis of the sample from which the crystal was selected indicates a composition near the...

Paul A. Colinvaux; Eileen K. Schofield; Ira L. Wiggins

1968-12-06T23:59:59.000Z

354

A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity...  

Open Energy Info (EERE)

evidence to suggest that particle aggregation is particularly successful in removing glass shards with high surface areasmass ratios. The primary atmospheric hazard of...

355

CV-2b: Plutonic - Inactive Volcanism | Open Energy Information  

Open Energy Info (EERE)

Making. In: Proceedings. Thirty-Ninth Workshop on Geothermal Reservoir Engineering; 20140224; Stanford, California. Stanford, California: Stanford University; p. 8 Inga...

356

Heterogeneous Structure Around the Jemez Volcanic Field, New...  

Open Energy Info (EERE)

Data Abstract We analyse active-experiment seismic data obtained by the 1993 Jemez Tomography Experiment (JTEX) programme to elucidate the heterogeneous structure of the Jemez...

357

Geomorphic assessment of late Quaternary volcanism in the Yucca  

Science Journals Connector (OSTI)

...volcanology waste disposal Yucca Mountain GeoRef, Copyright...investigations within the Yucca Mountain area, adjacent...the area for disposal of high-level...ACKNOWLEDGMENTS Funding for the Nevada...and by the Yucca Mountain Project Office...

358

Volcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissions  

Science Journals Connector (OSTI)

...destruction (and BrO generation) is only limited...occurring in the gas phase with light...atmospheric gases, even passively...large coal-fired power plants (Stith...from coal-fired electric power plants and their...Eltgroth1982Particles and gases in the emissions...

2008-01-01T23:59:59.000Z

359

Geothermal spas in Hawaii: A new tourist industry. : A preliminary report  

SciTech Connect (OSTI)

There are at least three very good uses for active volcanism: Obtain energy from it. Study it. Enjoy it. We are already obtaining electrical energy and industrial heat from Kilauea's abundant resource by drilling geothermal wells and building power plants. Our Volcano Observatory is recognized as a world renowned center of learning about volcanism. Our Volcanoes National Park allows us to view and appreciate this awesome phenomenon. For several years people have speculated about the high potential in Hawaii for another way of enjoying this warmth of mother earth -- spas or resorts that would make use of water that is naturally heated and mineralized by volcanic activity. However, before spas are developed in Hawaii, answers are needed to several important questions dealing with such topics as the suitability of our geothermal waters, sources of water that could be tapped, special equipment and materials needed, land availability, governmental and environmental hurdles, and the economics of this unique business. Though a considerable amount of research is still needed, it was felt worthwhile to summarize the information gathered to date from historical works, brochures, personal communications, and other sources. This report should stimulate interest in, and perhaps accelerate, the development of one of Hawaii's most important natural resources.

Woodruff, J.L.

1987-07-01T23:59:59.000Z

360

Cinder Cone | 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 » Cinder Cone Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Cinder Cone Dictionary.png Cinder Cone: Cinder cones, also known as scoria or spatter cones, are a relatively simple type of volcano consisting of a steep conical pile of volcanic ash and tephra. They exhibit a lower profile than stratovolcanoes (usually rising no more than a thousand feet above the surrounding topography), and typically have a bowl-shaped depression at their summits. They form primarily from the eruption of pyroclastic ejecta and are commonly encountered on the flanks of stratovolcanoes, shield volcanoes, and

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Stratovolcano | 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 » Stratovolcano Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Stratovolcano Dictionary.png Stratovolcano: Stratovolcanoes, also known as composite volcanoes, are conical volcanoes composed of multiple layers of intermediate to felsic lava, ash, and other volcanic debris. Their steep profiles are the result of the high viscosity of less mafic lavas, which prevents them from flowing great distances during eruption and cooling. Stratovolcanoes are commonly encountered in chains adjacent to subduction zones, where dewatering of the subducting slab and melting of the slab and overlying mantle rocks leads to magma

362

Infrared polarization measurements of Io in 1986  

SciTech Connect (OSTI)

New polarization measurements of Io were made with two different polarimeters at 3.8 and 4.8 microns. The measurements, at phase angles of about 2 deg, detect the polarization of reflected sunlight at both wavelengths. Only upper limits can be determined for the volcanic activity in 1986, but these limits show that there has been a remarkable decrease in activity, particularly of the Loki volcano, at these short wavelengths. The 1984 data (Goguen and Sinton (1985) are reanalyzed with the new model, which includes polarization of reflected sunlight. The large amount of thermal emission from the Loki volcano in 1984 produced a polarization that was dominant over that of reflected sunlight. 29 references.

Sinton, W.M.; Goguen, J.D.; Nagata, T.; Ellis, H.B. Jr.; Werner, M.

1988-09-01T23:59:59.000Z

363

Geographic variation and distribution of the genus Tomodactylus in Mexico  

E-Print Network [OSTI]

of Volcan Paricutin~ the most recent active volcano in Mexico. Patscuaro, 101 31' ~18 $1'~ 8, 800 ft, ~ Lecation 28 Pine-oak Forest. A large town surrounded by low hills on the southern edge of Lago Patscuaro. Large areas of lava deposits lie... 800 t, ( fL tl 38. Pine-oak Forest, A large suburb of Mexico City. MORE LO8 ~AL . $015' ~18 44'; 3?$00 ft. ; L tl 50. A Tropical 8crub. A snail town surrounded by rell- ing hills and irrigated valleys. The eager crops are rice, oorn, and bananas...

Dixon, James Ray

2012-06-07T23:59:59.000Z

364

Aeromagnetic Survey At Kilauea Summit Area (Zablocki, 1978) | Open Energy  

Open Energy Info (EERE)

Zablocki, 1978) Zablocki, 1978) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aeromagnetic Survey At Kilauea Summit Area (Zablocki, 1978) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Aeromagnetic Survey Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes These VLF induction methods should have wide application to studies of active volcanic regions in other parts of the world and could provide some insights into the workings of larger-scaled geothermal systems. Uses high-resolution aeromagnetics References Charles J. Zablocki (1978) Applications of the VLF Induction Method For Studying Some Volcanic Processes of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Aeromagnetic_Survey_At_Kilauea_Summit_Area_(Zablocki,_1978)&oldid=40223

365

Caldera Depression | Open Energy Information  

Open Energy Info (EERE)

Caldera Depression Caldera Depression Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Caldera Depression Dictionary.png Caldera Depression: Calderas form from the catastrophic eruption of large amounts of felsic lava and ash. Emptying of the magma chamber and subsequent collapse of the overlying volcanic edifice forms a ring-shaped caldera depression up to several kilometers in diameter. The edges of the underlying magma chamber are roughly marked by a ring fracture zone that acts as a conduit for ongoing volcanism and hydrothermal activity. Other definitions:Wikipedia Reegle Topographic Features List of topographic features commonly encountered in geothermal resource areas: Mountainous Horst and Graben Shield Volcano Flat Lava Dome Stratovolcano Cinder Cone Caldera Depression

366

Viscosity Problems in Igneous Rocks  

Science Journals Connector (OSTI)

The earth's magma a siliceous melt which is believed to underlie the entire solid crust of the earth is in all probability a highly viscous liquid. Wherever molten lava is observed in motion either in craters of volcanoes (Kilauea Mauna Loa Hawaii) or as disastrous flows which descend volcanic mountains (Vesuvius Mount Aetna etc.) or in the vicinity of volcanic fissures (Laki Eldgja rift Iceland) it behaves like a liquid of appreciable viscosity; the degree of viscosity however varies depending on the proportion of admixed gases and water vapor and the chemical composition of the lava. Lavas rich in silica are highly viscous (rhyolite dacite) while those rich in iron and magnesium (basalt andesite) are more fluid. The viscosity of every lava flow increases until the melt slowly freezes because of the chilling effect of the surface temperatures on the earth.

Robert Balk

1932-01-01T23:59:59.000Z

367

A Resurgent Cauldron In The Early Paleozoic Of Wales, Uk | Open Energy  

Open Energy Info (EERE)

Resurgent Cauldron In The Early Paleozoic Of Wales, Uk Resurgent Cauldron In The Early Paleozoic Of Wales, Uk Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Resurgent Cauldron In The Early Paleozoic Of Wales, Uk Details Activities (0) Areas (0) Regions (0) Abstract: The paper presents a controversial interpretation of a mid-Ordovician volcano-sedimentary complex. It deals with the cyclic interdependence of intrusive, volcanic, and sedimentary processes, due to the development of a nearshore resurgent cauldron in the Caledonian fold belt of North Wales. Deformed volcanotectonic features include a resurgent dome and apical graben, surrounded by a moat and peripheral crescentic ring-fault, constituting a caldera 20 km in diameter. The resurgent Snowdon caldera developed through three cycles of ash-flow volcanism resulting from

368

Crustal structure of northern Gran Canaria, Canary Islands, deduced from active seismic tomography  

Science Journals Connector (OSTI)

Seismic P-wave travel times collected during METEOR cruise M24 are inverted to derive a three-dimensional model of the P-wave velocity structure of the northern part of Gran Canaria, Canary Islands. The data consist of 6689 P-wave travel times from 1487 offshore air-gun shots which were recorded by both land-based seismometers and ocean bottom hydrophones. The crustal structure is well imaged by the data set as demonstrated by analysis of the resolution and tests with synthetic data. The volcanic island is characterized by generally high P-wave velocities (>5.5 km/s) and a heterogeneous structure with large lateral velocity variations. High P-wave velocities are found around the centers of the Miocene shield volcanoes in the vicinity of Agüimes, San Nicolas, and Agaete as well as the center of the Pliocene Roque Nublo volcano. The velocity structure suggests a high percentage of dense intrusive rocks. Some of the intrusive rocks were emplaced during the eruption of >1000 km3 of Miocene felsic magmas following the basaltic shield phase. The velocity structure beneath La Isleta peninsula and its submarine continuation is interpreted as a volcanic rift zone with abundant dikes. The velocities decrease to Gran Canaria is found at a depth of ?15 km. The structure of Gran Canaria and the adjacent ocean basin is thought to be the result of a diffuse mantle upwelling under a slowly moving plate.

Sebastian Krastel; Hans-Ulrich Schmincke

2002-01-01T23:59:59.000Z

369

Argon-40: Excess in Submarine Pillow Basalts from Kilauea Volcano, Hawaii  

Science Journals Connector (OSTI)

...CHOQUETTE Denver Research Center, Marathon Oil Company, Littleton, Colorado...modification by B. J. Wigin-ton (Marathon Oil Co.) of one described by C...Pray, L. J. Walters, Jr. (Marathon Oil Company), and S. Epstein (California...

G. Brent Dalrymple; James G. Moore

1968-09-13T23:59:59.000Z

370

Cosmic-ray Muon Radiography of a Volcano Seismo Seminor at Caltech, Nov 5, 2004  

E-Print Network [OSTI]

of the high-energy cosmic-ray muons passing through a mountain. This technique is in principle, based upon) with a mean energy of a few GeV (109 eV). Such high-energy muons have been used to explore the internal. It is also known that horizontally arriving cosmic-ray muons have a strong intensity in the high energy

Heaton, Thomas H.

371

Normal vector analysis from GNSS—GPS data applied to Deception volcano surface deformation  

Science Journals Connector (OSTI)

......References Berrocoso M. , 1997. Modelos y Formalismos para el Tratamiento de Observaciones GPS. Aplicacion al Establecimiento de Redes Geodesicas y Geodinamicas en la Antartida, Boletin ROA No. 1/97, Real Instituto y Observatorio de la Armada, San Fernando......

M. Berrocoso; G. Prates; A. Fernández-Ros; A. García

2012-09-01T23:59:59.000Z

372

Lead isotopes behavior in the fumarolic environment of the Piton de la Fournaise volcano (Reunion Island)  

E-Print Network [OSTI]

significantly outside the field of lavas. The iso- topic shift is ascribed to leaching ubiquitous unradiogenic phases (e.g., sulfides) by acidic gas condensates. The similarity in Pb isotope signature between lavas isotopes resulting from volatilization and condensation processes is smaller than the precision of Pb iso

373

Applicability of InSAR to tropical volcanoes: insights from Central America  

E-Print Network [OSTI]

. BIGGS2,3, T. A. MATHER1 & F. AMELUNG3 1 COMET+, Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK 2 COMET+, School of Earth Sciences, University of Bristol, Wills Evergreen broadleaf vegetation dominates. Land-use classification is a better predictor of decorrelation

Amelung, Falk

374

Nues ardentes of 22 November 1994 at Merapi volcano, Java, Indonesia E.K Abdurachmanab  

E-Print Network [OSTI]

toward the southwest and west. The 1994 nuées ardentes descended mainly the Boyong valley and the Bedog facies, a conventional Merapi-type, valley-fill block-and-ash flow facies and a pyroclastic surge facies the distal block-and-ash deposit in the Boyong valley. The detachment occurred at higher elevations, likely

Paris-Sud XI, Université de

375

Fire-Fountains; the Kingdom of Hawaii, its Volcanoes, and the History of its Missions  

Science Journals Connector (OSTI)

... have formed in and around the lake, each a distinct fire-fountain, yet all flameless-only merrily flinging about the molten metal: a bouquet of rare fireworks."These ...

1883-04-05T23:59:59.000Z

376

Guest, J., Cole, P., Duncan, A. & Chester, D. 2003. Volcanoes of Southern Italy.:  

Science Journals Connector (OSTI)

...established'. Great stuff and a real eye opener to the personalities...surrounded by dense housing estates with their attendant vandalism...Valuing the Resource: the Sustainable Ap-proach', was introduced...in Somerset has remained a sustainable resource despite two centuries...

Ralf Gertisser

377

Sulfur Degassing From Volcanoes: Source Conditions, Surveillance, Plume Chemistry and Earth System Impacts  

Science Journals Connector (OSTI)

...would therefore release 4-5 Gt of...especially energetic fire fountains and...substantial fraction of the released...ground-based or airborne ultraviolet...spontaneous releases of SO2 to the...substantial fractions of the total...Pinatubo. In: Fire and mud: eruptions...quantification of gas release during weak...

Clive Oppenheimer; Bruno Scaillet; Robert S. Martin

378

Thermodynamic stability and activity volcano for perovskite-based oxide as OER catalyst  

E-Print Network [OSTI]

Design of efficient and cost-effective catalysts for the oxygen evolution reaction (OER) is crucial for the development of electrochemical conversion technologies. Recent experiments show that perovskite transition-metal ...

Rong, Xi, S.M. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

379

Crater Lake Temperature Changes of the 2005 Eruption of Santa Ana Volcano, El Salvador, Central America  

E-Print Network [OSTI]

to explain the increase in lake temperature based on energy/mass balance calculations. Key words: Santa Ana

Royer, Dana

380

3D imaging of volcano gravitational deformation by computerized X-ray micro-tomography  

Science Journals Connector (OSTI)

...also run with a 10:1 mix of the same sand with plaster (50 mum). This plaster has a higher coefficient of internal friction...using a fine, low-cohesion quartz sand and plaster mix. The cone is originally 7.2 cm in diameter...

M. Kervyn; M.N. Boone; B. van Wyk de Vries; E. Lebas; V. Cnudde; K. Fontijn; P. Jacobs

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Signals recorded by DEMETER satellite over active volcanoes during the period 2004 August–2007 December  

Science Journals Connector (OSTI)

......extents from 20 Hz to 20 kHz; 2 A three-components...lies from dc to 3.5 MHz; 3 A Langmuir probe...between 500 and 3000 4 A plasma analyser () of the...waveforms, up to 20 kHz, are saved. For...are recorded up to 3 MHz. Anywhere else...ashes ejecta in the atmosphere during eruptive events......

Jacques Zlotnicki; Feng Li; Michel Parrot

2010-12-01T23:59:59.000Z

382

Stratigraphy of small shield volcanoes on Venus: Criteria for determining stratigraphic relationships and assessment of relative  

E-Print Network [OSTI]

than about 20 km, are common and sometimes very abundant features on the plains of Venus. Typically plains of Venus. Did the eruption style of small shields occur repeatedly throughout the visible part plains with wrinkle ridges. Fifteen fields ($11%) appear to be synchronous with regional plains

Head III, James William

383

E-Print Network 3.0 - albani volcano roman Sample Search Results  

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

as the Romans of the Empire saw it, but also in its... , and pontifices, that is, as kings and priests, men of religion as well as reason, because the first Romans firmly... |...

384

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...

385

Scattering behaviour at Merapi volcano (Java) revealed from an active seismic experiment  

Science Journals Connector (OSTI)

......Each source consists of a rectangular water basin of 2m4m cross section and 4.5m...equipment by the Geophysical Instrument Pool, Potsdam (GIPP). We used the free...coda wave excitation based on the energy conservation law, Phys. Earth planet. Inter, 67......

Ulrich Wegler; Birger G. Lühr

2001-06-01T23:59:59.000Z

386

The effect of edifice load on magma ascent beneath a volcano  

Science Journals Connector (OSTI)

...mass and R the perfect gas constant. Finally...the vertical pro les of gas content and density. The gas phase acts to decrease...remains within the range of natural magmas, which demonstrates...Crater Lake caldera, Cascade Range, U.S.A. J...

2000-01-01T23:59:59.000Z

387

Imaging magma storage below Teide volcano (Tenerife) using scattered seismic wavefields  

Science Journals Connector (OSTI)

......profiles. The frequency content of the...However, the energy is mainly concentrated...as the highest frequencies are highly attenuated...relevant instrument response. Two receiver...9 Beam power response of the noise...highly scattered energy. A 2-D median...Possible magmatic storage The presence......

L. De Barros; F. Martini; C. J. Bean; A. Garcia-Yeguas; J. Ibáñez

2012-11-01T23:59:59.000Z

388

Magnetic structure of Loihi Seamount, an active hotspot volcano in the Hawaiian Island chain  

E-Print Network [OSTI]

techniques. A strongly magnetized shield can explain most of the anomaly with a large nonmagnetic zone inside, beneath the summit. Prominent magnetic highs are located along Loihi's north and south rift zone dikes and modeling solutions suggest strongly...

Lamarche, Amy J.

2004-09-30T23:59:59.000Z

389

Sulfur Degassing From Volcanoes: Source Conditions, Surveillance, Plume Chemistry and Earth System Impacts  

E-Print Network [OSTI]

of sulfur in magmas owes much to its multiple valence states (-II, 0, IV, VI), speciation (e.g., S2, H2S, SO on the redox chemistry of sulfur: by reducing sulfur, thiosulfate, sulfite and sulfate to H2S, or oxidizing sulfur and H2S to sulfate (e.g., Takano et al. 1997; Amend and Shock 2001; Shock et al. 2010

Boyer, Edmond

390

Transient volcano deformation sources imaged with interferometric synthetic aperture radar: Application to Seguam Island, Alaska  

E-Print Network [OSTI]

of the InSAR data, reveals a relatively simple system of interrelated predictable processes driven by magma data accounts for the transient, interrelated behavior of the source clusters and the observed to infer subsurface processes that cannot be directly observed. Mechanical modeling, con- strained

391

On the time–scales of magmatism at island–arc volcanoes  

Science Journals Connector (OSTI)

...absent. Numerous studies in the Cascades, Tonga and Vanuatu have consistently...shallow mantle melting under the Cascades volcanoc arc. Geology 29...Vergniolle, S. 1989 Pressure, gas content and eruption periodicity...high-pressure experiments and natural rocks. J. Volcanol. Geotherm...

2002-01-01T23:59:59.000Z

392

Late Holocene stratigraphy of the Tetimpa archaeological sites, northeast flank of Popocatépetl volcano, central Mexico  

Science Journals Connector (OSTI)

...population growth for the pre-Hispanic city of Cholula (Mountjoy...During both periods, pre-Hispanic occupation sites in the Tetimpa...1973, Man and land in pre- Hispanic Cholula: Nashville, Tennessee...G., 1998, Preclassic household pat- terns preserved under...

393

Fault location by radon and mercury detection at an active volcano in Nicaragua  

Science Journals Connector (OSTI)

... Radon was detected using a sensitive film enclosed in Track Etch Detector Cups which were buried ... -30 days. Analyses of the tracks on the film were performed by the manufacturer. Radon is reported as tracks per mm2 per 30 days (0.91 tracks per mm2 ...

William B. Crenshaw; Stanley N. Williams; Richard E. Stoiber

1982-11-25T23:59:59.000Z

394

The epidemiology and etiology of visitor injuries in Hawaii Volcanoes National Park  

E-Print Network [OSTI]

The U.S. National Park Service has recognized visitor health and safety as an important component of protected area management. Despite this recognition, research investigating visitor health and safety issues in national parks is lacking. In order...

Heggie, Travis Wade

2006-04-12T23:59:59.000Z

395

Imaging magma storage below Teide volcano (Tenerife) using scattered seismic wavefields  

Science Journals Connector (OSTI)

......actually produces scattered energy. It is consequently...expensive computational costs. Figure 4 Results of...with highly scattered energy. The dashed line indicates...at: http://www.energy.ca.gov/sitingcases...Microearthquakes at the Rotokawa Geothermal Field, New Zealand......

L. De Barros; F. Martini; C. J. Bean; A. Garcia-Yeguas; J. Ibáñez

2012-11-01T23:59:59.000Z

396

SO2 emissions to the atmosphere from active volcanoes in Guatemala and El Salvador, 19992002  

E-Print Network [OSTI]

Mexico, Albuquerque, NM 87131, United States Received 17 July 2003; accepted 28 July 2004 Abstract Ground: larodrig@mtu.edu (L.A. Rodri´guez). Journal of Volcanology and Geothermal Research 138 (2004) 325­344 www damage to the local environ- ment and the population's health, as well as perturb the climate

Rose, William I.

397

Magmatic Longevity of Laacher SeeVolcano (Eifel, Germany) Indicated by U^Th Dating of  

E-Print Network [OSTI]

RESOURCES, ETH ZU« RICH, CLAUSIUSSTRASSE 25, 8092 ZU« RICH, SWITZERLAND 4 DEPARTMENT OF GEOLOGY, UNIVERSITY OF CALIFORNIA DAVIS, ONE SHIELDS AVENUE, DAVIS, CA 95616-8605, USA 5 DEPARTMENT OF GEOLOGY AND GEOGRAPHY, AUBURN PUBLICATION APRIL 16, 2010 Uranium-series dating of carbonatitic ejecta clasts constrains the crystallization

398

E-Print Network 3.0 - anorogenic acid volcano-plutonic Sample...  

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

Chimie des Failles Collection: Geosciences 24 Precambrian Research 148 (2006) 125144 The uranium mineralization potential of the Paleoproterozoic Summary: that the Lake Superior...

399

Research Paper Eruption ages of Las Tres Vrgenes volcano (Baja California): A tale of two  

E-Print Network [OSTI]

Young Drive E, Los Angeles, CA 90095, USA b Department of Geology, University of Kansas, 120 LindleyForschungsZentrum, Telegrafenberg, D-14473 Potsdam, Germany d Geology Department, California State University, Sacramento, CA 95819 February 2010 Accepted 15 February 2010 Available online xxx Keywords: Uranium series Zircon Cosmogenic

400

Geothermal energy resource investigations in the Eastern Copper River Basin, Alaska  

SciTech Connect (OSTI)

This report consists of a review of the geological, geochemical and geophysical data available for the Eastern Copper River basin with emphasis on the mud volcanoes, and the results of geophysical and geochemical studies carried out in the summers of 1982 and 1984. The purpose was to determine if there are geothermal energy resources in the Copper River Basin. The Eastern Copper River basin is situated on the flanks of a major volcano, Mt. Drum, which was active as late as 200,000 years ago and which is thought to have retained significant amounts of residual heat at high levels. Mt. Wrangell, farther to the east, has been volcanically active up to the present time. The 1982 geophysical and geochemical surveys located three principal areas of possible geothermal interest, one near Tazlina and two near the Klawasi mud volcanoes. The intensive survey work of 1984 was concentrated on those areas. We have integrated the results of soil helium, soil mercury, gravity, aeromagnetic, electrical, self-potential, and controlled-source audio magnetotelluric (CSAMT) surveys to evaluate the geothermal potential of the areas studied. 36 figs.

Wescott, E.M.; Turner, D.L.

1985-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Rifting of the Izu-Bonin arc in the Quaternary and Mid-Oligocene  

SciTech Connect (OSTI)

Eruption of middle Eocene-lower Oligocene boninites and island arc tholeiites created the 200 km wide Izu-Bonin arc massif following the initiation of subduction {approximately}50 Ma. Mid-Oligocene rifting formed a 40-70 km wide forearc basin between the Eocene outer-arc high and the Eo-Oligocene arc (now the frontal arc high), with maximum extension at the latitudes of the Bonin Ridge and Trough. The Oligocene forearc basin was rapidly (100-300 m/m.y.) filled with turbidite and debris flow deposits produced by concurrent volcanism and erosion of the surrounding highs. Contemporaneous stretching in the backarc region produced dominantly east-dipping, NNE-trending, normal faults and culminated in backarc spreading in the Shikoku basin (25-15 Ma), isolating the Palau-Kyushu remnant arc. The forearc and remnant arc sediments record a dearth of volcanogenic input between 23 and 17 Ma; evidence that an arc volcanic minimum accompanied backarc spreading. The middle Miocene to Recent volcanic front formed 0(S)-50(N) km west of the Oligocene arc and has loaded and flexed the forearc. Further west, chains of submarine volcanoes erupted along the extension of Shikoku basin fracture zones. Basaltic sills were emplaced in the forearc. Explosive volcanism from rhyolitic calderas has increased dramatically since the late Pliocene, especially in the last 0.2 Ma. Since {approximately}2 Ma the arc has been stretched again, producing rapidly subsiding (300-2,250 m/m.y.) graben, immediately west of the volcanic front, which are segmented along strike by oblique transfer zones. The Sumisu Rift is partially filled with (<1.5 Ma) volcaniclastic turbidites and hemipelagic sediments and is intruded by backarc basin basalts. About 1 km of syn-rift uplift of the arc margin footwall has produced an unconformity, beneath surficial pumice, that extends back to pumiceous sediments >2.35 Ma.

Taylor, B. (Univ. of Hawaii, Honolulu (USA))

1990-06-01T23:59:59.000Z

402

Stress and volcanism in the northern Mogollon-Datil volcanic field, New Mexico: Effects of the post-Laramide tectonic transition  

Science Journals Connector (OSTI)

...below the 32.0 Ma Hells Mesa Tuff. Measurement...Lemitar Mountains; C, Chupadera Mountains; M, Magdalena...the Lemitar Mountains, Chupadera Mountains, southern...the base of the Hells Mesa Tuff ( ^ A r / ^ A r...32 30 28 26 H e l l s Mesa Tuff 1 r 1 1 1 n 1 t...

403

Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt & Subtle Volcanic Systems, Hawaii & Maui  

Broader source: Energy.gov [DOE]

DOE Geothermal Technologies Peer Review 2010 - Presentation. Project Objective: To use a combination of traditional geophysical and geochemical tools with exploration suites not typically used in geothermal exploration.

404

Magnetostratigraphy of the lower Triassic volcanics from deep drill SG6 in western Siberia: evidence for long-lasting Permo–Triassic volcanic activity  

Science Journals Connector (OSTI)

......for gas and oil production previous polarity...alternating fields. The samples...We traced the cumulative curves of the...with new field and geochemical...four the peak production of dust, toxic...Results of new field and from central......

Michel Westphal; Evgueni L. Gurevitch; Boris V. Samsonov; Hugues Feinberg; Jean Pierre Pozzi

1998-07-01T23:59:59.000Z

405

Are there significant hydrothermal resources in the US part of the Cascade Range?  

SciTech Connect (OSTI)

The Cascade Range is a geothermal dichotomy. On the one hand, it is an active volcanic arc above a subducting plate and is demonstrably an area of high heat flow. On the other hand, the distribution of hydrothermal manifestations compared to other volcanic arcs is sparse, and the hydrothermal outflow calculated from stream chemistry is low. Several large estimates of undiscovered geothermal resources in the U.S. part of the Cascade Range prepared in the 1970s and early 1980s were based fundamentally on two models of the upper crust. One model assumed that large, partly molten, intrusive bodies exist in the upper 10 km beneath major volcanic centers and serve as the thermal engines driving overlying hydrothermal systems. The other model interpreted the coincident heat-flow and gravity gradients west of the Cascade crest in central Oregon to indicate a partly molten heat source at 10 {+-} 2 km depth extending {approx}30 km west from the axis of the range. Investigations of the past ten years have called both models into question. Large long-lived high-temperature hydrothermal systems at depths <3 km in the U.S. part of the Cascade Range appear to be restricted to silicic domefields at the Lassen volcanic center, Medicine Lake volcano, Newberry volcano, and possibly the Three Sisters. Federal land-use restrictions further reduce this list to Medicine Lake and Newberry. Dominantly andesitic stratocones appear to support only small transitory hydrothermal systems related to small intrusive bodies along the volcanic conduits. The only young caldera, at Crater Lake, supports only low- to intermediate-temperature hydrothermal systems. Most of the Cascade Range comprises basaltic andesites and has little likelihood for high-level silicic intrusions and virtually no potential for resultant large high-temperature hydrothermal systems. Undiscovered hydrothermal resources of the Cascade Range of the United States are substantially lower than previous estimates. The range does have potential for intermediate-temperature hot dry rock and localized low- to intermediate-temperature hydrothermal systems.

Muffler, L.J. Patrick; Guffanti, Marianne

1995-01-26T23:59:59.000Z

406

Preliminary report on shallow research drilling in the Salton Sea region  

SciTech Connect (OSTI)

During two shallow thermal drilling programs, thermal measurements were obtained in 56 shallow (76.2 m) and one intermediate (457.3 m) depth holes located both onshore and offshore along the southern margin of the Salton Sea in the Imperial Valley, California. These data complete the surficial coverage of the thermal anomaly, revealing the shape and lateral extent of the hydrothermal system. The thermal data show the region of high thermal gradients to extend only a short distance offshore to the north of the Quaternary volcanic domes which are exposed along the southern shore of the Salton Sea. The central thermal anomaly has an arcuate shape, about 4 km wide and 12 km long. Across the center of the anomaly, the transition zone between locations exhibiting high thermal gradients and those exhibiting regional thermal gradients is quite narrow. Thermal gradients rise from near regional (0.09/degree/C/m) to extreme (0.83/degree/C/m) in only 2.4 km. The heat flow in the central part of the anomaly is greater than 600 mW/m/sup 2/ and in some areas exceeds 1200 mW/m/sup 2/. The shape of the thermal anomaly is asymmetric with respect to the line of volcanoes previously thought to represent the center of the field, with its center line offset south of the volcanic buttes. There is no broad thermal anomaly associated with the magnetic high that extends offshore to the northeast from the volcanic domes.

Newmark, R.L.; Kasameyer, P.W.; Younker, L.W.

1988-01-14T23:59:59.000Z

407

A New Multidisciplinary Marine Monitoring System for the Surveillance of Volcanic and Seismic Areas  

Science Journals Connector (OSTI)

...relate to the need for the huge investment of funds, high management...elements-including ships, submersible vehicles, and specialized...sphere with an auto-leveling platform; a low-frequency hydrophone...Buoy The surface buoy is a semi-rigid structure with a metal...

Giovanni Iannaccone; Sergio Guardato; Maurizio Vassallo; Luca Elia; Laura Beranzoli

408

A 3-D gravity model for a volcanic crater in Terceira Island (Azores)  

Science Journals Connector (OSTI)

......Guedes J.H.C., Lucas A., 1997. Registos obtidos na rede acelerometrica dos Acores durante a crise sismica de Junho-Outubro...Sao Jorge iniciada com o sismo de 9 de Julho de 1998 vista na rede acelerografica dos Acores, Proc. 1st Simposio de Meteorologia......

F. G. Montesinos; A. G. Camacho; J. C. Nunes; C. S. Oliveira; R. Vieira

2003-08-01T23:59:59.000Z

409

Northern Hemispheric cryosphere response to volcanic eruptions in the Paleoclimate Modeling Intercomparison Project 3 last  

E-Print Network [OSTI]

(PMIP3) project to determine whether current state-of-the-art models produce sudden changes it is not sustained beyond a decade. Sea ice expansion in the North Atlantic is seen in some PMIP3 models after large eruptions, although none of these models produce significant centennial-scale effects. Warm Baffin Island

Robock, Alan

410

Absorption of Visible Radiation by Aerosols in the Volcanic Plume of Mount St. Helens  

Science Journals Connector (OSTI)

...extent absorption of solar radia-tion might reduce...front of an opal glass slab, which acts as a Lambert...surface as both particle collector and optical integrator...micro-scopic analyses of the collectors, which for the 19 May...a single pass of the solar beam through an optically...

J. A. OGREN; R. J. CHARLSON; L. F. RADKE; S. K. DOMONKOS

1981-02-20T23:59:59.000Z

411

Laboratory investigation of constitutive property up-scaling in volcanic tuffs  

SciTech Connect (OSTI)

One of the critical issues facing the Yucca Mountain site characterization and performance assessment programs is the manner in which property up-scaling is addressed. Property up-scaling becomes an issue whenever heterogeneous media properties are measured at one scale but applied at another. A research program has been established to challenge current understanding of property up-scaling with the aim of developing and testing improved models that describe up-scaling behavior in a quantitative manner. Up-scaling of constitutive rock properties is investigated through physical experimentation involving the collection of suites of gas-permeability data measured over a range of discrete scales. To date, up-scaling studies have been performed on a series of tuff and sandstone (used as experimental controls) blocks. Samples include a welded, anisotropic tuff (Tiva Canyon Member of the Paintbrush Tuff, upper cliff microstratigraphic unit), and a moderately welded tuff (Tiva Canyon Member of the Paintbrush Tuff, Caprock microstratigraphic unit). A massive fluvial sandstone (Berea Sandstone) was also investigated as a means of evaluating the experimental program and to provide a point of comparison for the tuff data. Because unsaturated flow is of prime interest to the Yucca Mountain Program, scoping studies aimed at investigating the up-scaling of hydraulic properties under various saturated conditions were performed to compliment these studies of intrinsic permeability. These studies focused on matrix sorptivity, a constitutive property quantifying the capillarity of a porous medium. 113 refs.

Tidwell, V.C. [Sandia National Labs., Albuquerque, NM (United States). Geohydrology Dept.

1996-08-01T23:59:59.000Z

412

Geochemistry of reversible hydratable tephra from the Trans Mexican Volcanic Belt  

Science Journals Connector (OSTI)

...of 27Al was recorded using a Varian 300 MHz spectrometer equipped with a 7 mm rotor...equilibria of pyroxenes at pressures 1 atmosphere. In C.T. Prewitt, Ed., Pyroxenes...nuclear magnetic resonance investigation in plasma-facilitated NOx reduction catalysts...

Liberto De Pablo; Mercedes Doval; Angel La Iglesia

413

From volcanic origins of chemoautotrophic life to Bacteria, Archaea and Eukarya  

Science Journals Connector (OSTI)

...have involved all chromosomes. Initiating nicks would have occurred indiscriminately in...for ring formation. Relaxation by the nicks would have obviated helicase and topoisomerase...assumptions and therefore it is without empirical merit. Let me briefly state the reasons...

2006-01-01T23:59:59.000Z

414

The Dundonald deposit; an example of volcanic-type nickel-sulfide mineralization  

Science Journals Connector (OSTI)

...197I): Archeannickel sulphide depositsin Canada: their classification, geologicalsetting and genesiswith somesugggs-iions as to exploration./n Symposium on Ar-cheanRocks(J.E. Glover, ed.), Geol,Soc,Aust. Spec,Publ. g, 2AL'226...

J. E. Muir; C. D. A. Comba

415

Hydrogen Isotopes in Lunar Volcanic Glasses and Melt Inclusions Reveal a Carbonaceous Chondrite Heritage  

Science Journals Connector (OSTI)

...2), and that the water was not completely lost...evidence that Earth’s water budget and isotopic...high-temperature convective atmospheric envelope surrounding...and simply inherited water from the proto-Earth...observations by the Gravity Recovery and Interior Laboratory...

Alberto E. Saal; Erik H. Hauri; James A. Van Orman; Malcolm J. Rutherford

2013-06-14T23:59:59.000Z

416

Elemental and gamma-ray surveys in the volcanic soils of Ischia Island, Italy  

Science Journals Connector (OSTI)

...M.G., The distribution of Uranium over Europe: geological and...Epidemiologia e Prevenzione Extract from Cancer Report Atlas of Cancer Mortality in the Campania Region...Belkin, H. E., Occurrence of Uranium, Thorium and REE bearing minerals...

P. Frattini; B. De Vivo; A. Lima; D. Cicchella

417

Magnitude scale for LP events: a quantification scheme for volcanic quakes  

Science Journals Connector (OSTI)

......proportionality between the energy and the coda duration cannot...extended to VLP events. The energy associated with a tremor...complex, Southern Andes, Argentina. J. Volc. Geotherm. Res...284-294. Kanamori H. Energy Release in great earthquakes......

E. Del Pezzo; F. Bianco; I. Borgna

2013-01-01T23:59:59.000Z

418

Characterization of Eyjafjallajökull volcanic ash particles and a protocol for rapid risk assessment  

Science Journals Connector (OSTI)

...with significant loss of life during the Laki eruption...the supernatant. The remaining solids were dried for a day in a glove box...1938 ) Adsorption of gases in multimolecular layers . J Am...21 Soares C ( 2007 ) Gas Turbines: A Handbook of Air...

S. R. Gislason; T. Hassenkam; S. Nedel; N. Bovet; E. S. Eiriksdottir; H. A. Alfredsson; C. P. Hem; Z. I. Balogh; K. Dideriksen; N. Oskarsson; B. Sigfusson; G. Larsen; S. L. S. Stipp

2011-01-01T23:59:59.000Z

419

Characterization of Eyjafjallajökull volcanic ash particles and a protocol for rapid risk assessment  

Science Journals Connector (OSTI)

...than if they remain airborne, but not all volatiles...stirring in water, so airborne particles...250-{mu}m fraction was sieved and the ? 250-{mu}m fraction was measured using laser absorption...SR ( 2008 ) Rapid releases of metal salts and...Kunz K ( 1998 ) Fires of the Earth, The...

S. R. Gislason; T. Hassenkam; S. Nedel; N. Bovet; E. S. Eiriksdottir; H. A. Alfredsson; C. P. Hem; Z. I. Balogh; K. Dideriksen; N. Oskarsson; B. Sigfusson; G. Larsen; S. L. S. Stipp

2011-01-01T23:59:59.000Z

420

Characterization of Eyjafjallajökull volcanic ash particles and a protocol for rapid risk assessment  

Science Journals Connector (OSTI)

...they remain airborne, but not all...water, so airborne particles...mu}m fraction was sieved...mu}m fraction was measured...day in a glove box (98% N 2...2008 ) Rapid releases of metal salts...1998 ) Fires of the Earth...

S. R. Gislason; T. Hassenkam; S. Nedel; N. Bovet; E. S. Eiriksdottir; H. A. Alfredsson; C. P. Hem; Z. I. Balogh; K. Dideriksen; N. Oskarsson; B. Sigfusson; G. Larsen; S. L. S. Stipp

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Modelling risk and risking models: the diffusive boundary between science and policy in volcanic risk assessment  

E-Print Network [OSTI]

to the appreciation that the eruptions may continue for 282 decades and should be regarded as a “chronic” problem for planning purposes (Donovan and 283 Oppenheimer, 2014). Managing this transition has required consistent yet innovative 284 approaches to scientific... to their advice. 524 There is abundant evidence of the political challenges of risk assessment and management on 525 Montserrat, and the complex boundaries and connectivities involved (Aspinall et al., 2002; 526 Haynes et al., 2007; Donovan and Oppenheimer...

Donovan, Amy R.; Oppenheimer, Clive

2014-11-27T23:59:59.000Z

422

40Ar/39Ar Age of the Lathrop Wells Volcanic Center, Yucca Mountain, Nevada  

Science Journals Connector (OSTI)

...are from the total fusion ofindivid-ual whole-rock...automated 40Ar/39Ar laser fusion-microextraction...solution and a 5% HF SCIENCE, VOL. 253...Ar-extraction system. Fusion was induced by a 6-W continuous Ar-ion laser beam focused to a...

BRENT D. TURRIN; DUANE CHAMPION; ROBERT J. FLECK

1991-08-09T23:59:59.000Z

423

Processes controlling porosity and permeability in volcanic reservoirs from the Austral and Neuquén basins, Argentina  

Science Journals Connector (OSTI)

...Philippines, based on continuous and spot core measurement: Geothermic, v.-33, p.-87-107. Storey, B.-C., T. Alabaster...georef;2007010845 2007-010845 Economic geology, geology of energy sources American Association of Petroleum Geologists Tulsa...

Patricia Sruoga; Nora Rubinstein

424

Exploration of volcanic geothermal energy resources based on rheological techniques. Final report  

SciTech Connect (OSTI)

Tidal strain and tilt field observations were carried out during the period February 1978 to December 1979 at the Klamath Graben and Newberry Caldera in Oregon and at Krafla in Northern Iceland. Moreover, tilt observations were made at Mt. St. Helens, Washington, during the summer of 1980. Two strainmeters of the same type as now in use by the US Geological Survey were applied in the strain work. Tilts were measured by two Kinemetrics model TM-1B biaxial tilt meters. The instruments were placed at depths of approximately one to two meters below the ground surface. Both strain and tilt fields turn out to be heavily contaminated by noise that is mostly of thermoelastic origin. In spite of considerable efforts, it has not been possible to process the strain field data to obtain sufficiently clear tidal signals. The tilt data are less contaminated and rather clear tidal signals were observed at Newberry in Oregon and Krafla in Iceland. A local magnification by a factor of about 3 of the EW component of the theoretical solid earth and ocean load tilt was observed at one station at Krafla. Moreover, the tidal tilt component across the ring fault at Newberry appears to be magnified by a factor of 1.4 to 1.9. The phenomena at the Krafla may possibly be due to a local magma chamber. These results are a clear indication of a tilt field modification by local structure and indicate the possibility of using tilt data to locate subsurface magma bodies.

Bodvarsson, G.; Axelsson, G.; Johnson, A.

1980-01-01T23:59:59.000Z

425

Mantle updrafts and mechanisms of oceanic volcanism Don L. Andersona,1  

E-Print Network [OSTI]

, than inferred from tomographic and tectonic features and mass balance calculations. That such narrow

Low, Steven H.

426

Geochemistry of reversible hydratable tephra from the Trans Mexican Volcanic Belt  

Science Journals Connector (OSTI)

...recorded using a Varian 300 MHz spectrometer equipped with a...probe. Samples were spun at 6 KHz. Signals of 27Al were recorded...of pyroxenes at pressures 1 atmosphere. In C.T. Prewitt, Ed...magnetic resonance investigation in plasma-facilitated NOx reduction...

Liberto De Pablo; Mercedes Doval; Angel La Iglesia

427

Faunas and Cambrian Volcanism on the Avalonian Marginal Platform, Southern New Brunswick  

Science Journals Connector (OSTI)

...Material examined Fragmentary cranidia (NBMG 12776, 12779, 12784, 12785, 12790), incomplete...16, incomplete cranidium, dorsal view, NBMG 12776, cranidium, dorsal view, NBMG 12776, 17, incomplete cranidium NBMG 12779, 3.6...

Ed Landing; Susan C. Johnson; Gerd Geyer

428

Northern lowlands of Mars: Evidence for widespread volcanic flooding and tectonic deformation in the Hesperian Period  

E-Print Network [OSTI]

age; (3) this unit is laterally contiguous with Early Hesperian-aged ridged plains in the southern Borealis Formation is a thin sedimentary unit superposed on regional ridged plains (Hr) and that its formed by this time; (4) Amazonian-aged smooth plains units, particularly in Amazonis Planitia, further

Head III, James William

429

Tephrochronology and Stratigraphy of Eocene and Oligocene Volcanic Ashes of East and Central Texas  

E-Print Network [OSTI]

using neutron activation analysis (NAA) of bulk ash and glass shards, inductively coupled plasma mass spectrometry (ICPMS) of bulk ash, and electron microprobe analysis of both apatite phenocrysts and glass shards to characterize their geochemistry...

Heintz, Mindi

2013-12-02T23:59:59.000Z

430

Eruptive history and geochronology of the Mount Baker volcanic field, Washington  

Science Journals Connector (OSTI)

...heterogeneous intrusive locus (Fig. 5; unit aoc). Along the 400-m-long west face...is the Ochotona intrusive complex (unit aoc; Figs. 5, 10) south of Table Mountain...appropriate age is the Ochotona complex (unit aoc), some components of which are petrographically...

431

A New Multidisciplinary Marine Monitoring System for the Surveillance of Volcanic and Seismic Areas  

Science Journals Connector (OSTI)

...logistical elements-including ships, submersible vehicles, and specialized teams of operators-are...glass sphere with an auto-leveling platform; a low-frequency hydrophone (0...The Surface Buoy The surface buoy is a semi-rigid structure with a metal pole 20...

Giovanni Iannaccone; Sergio Guardato; Maurizio Vassallo; Luca Elia; Laura Beranzoli

432

The sulfur content of volcanic gases on Mars Fabrice Gaillard, a  

E-Print Network [OSTI]

principles, we model here the likely sulfur contents of (1) the martian and terrestrial mantles and (2 a denser atmosphere are shown to be dominated by CO ± CO2 and H2 ± H2O species, depending on fO2, sulfur by H2S, which should have favored the acidification of any persistent water layer. The calculated

Boyer, Edmond

433

A 7000 yr perspective on volcanic ash clouds affecting northern Europe  

Science Journals Connector (OSTI)

...Daniell, J.R.G., Hunt, J.B., Molloy, K., and O Connell, M., 2004, Tephrostratigraphy of An Loch Mor, Inis Oirr, western Ireland: Implications for Holocene tephrochronology in the northeastern Atlantic region: The Holocene, v...

Graeme T. Swindles; Ian T. Lawson; Ivan P. Savov; Charles B. Connor; Gill Plunkett

434

Spherical and ellipsoidal volcanic sources at Long Valley caldera, California, using a genetic algorithm inversion technique  

Science Journals Connector (OSTI)

We model the second inflation period at Long Valley caldera, California using a genetic algorithm technique and high quality geodetic measurements of elevation changes and baseline extensions. We compare two source inversions for both spherical Mogi point sources and the finite prolate ellipsoid of Yang and Davis. A sensitivity analysis for the genetic algorithm is performed based upon synthetic data set inversions on similar sources in order to better constrain the areal location, orientation, and volume of the potential sources. The spherical sources are well constrained, the larger located at 9.9 km beneath the resurgent dome, with a volume of 0.036 km3, while the second, at only 0.008 km3, is located at a depth of 7.3 km beneath the south moat. The depths to the ellipsoidal sources are switched, with the larger source at a depth of 9.6 km and the smaller at 11.8 km, with volumes of 0.037 and 0.002 km3, respectively.

K.F Tiampo; J.B Rundle; J Fernandez; J.O Langbein

2000-01-01T23:59:59.000Z

435

A Physical Model For The Origin Of Volcanism Of The Tyrrhenian...  

Open Energy Info (EERE)

with processes of crustal deformation associated with "hot masses" as well as fracture systems along three branches, often separated by a 120 angle. Such fracture...

436

Dating the onset of volcanism at the Rum Igneous Centre, NW Scotland  

Science Journals Connector (OSTI)

...laser at the maximum power range. Irradiations were carried out in the 5 MW research reactor at the GKSS Research Centre (Geesthacht, Germany), with crystals in aluminium trays and cans (no Cd liner). The 40Ar/39Ar laser analyses were performed at...

VALENTIN R. TROLL; GRAEME R. NICOLL; COLIN H. DONALDSON; HENRY C. EMELEUS

437

Layered Hydrothermal Barite-Sulfide Mound Field, East Diamante Caldera, Mariana Volcanic Arc  

Science Journals Connector (OSTI)

...For samples with high Ba, Zn, Cu, or...total S by induction furnace/infrared spectrophotometry...elemental S by leach/furnace/IR. Duplicate...an index of the efficiency of a reduced set...in a well-type, high-resolution gammaray...Low-temperature, focused venting of hydrothermal fluids...

James R. Hein; Cornel E.J. de Ronde; Randolph A. Koski; Robert G. Ditchburn; Kira Mizell; Yoshihiko Tamura; Robert J. Stern; Tracey A. Conrad; Osamu Ishizuka; Matthew I. Leybourne

438

Non-equilibrium degassing and a primordial source for helium in ocean-island volcanism  

E-Print Network [OSTI]

Helge M. Gonnermann1 { & Sujoy Mukhopadhyay1 Radioactive decay of uranium and thorium produces 4 He in conjunction with radiogenic ingrowth of 4 He, which has led to a volatile-depleted upper mantle (MORB source

Mukhopadhyay, Sujoy

439

Asphalt Volcanism and Chemosynthetic Life in the Campeche Knolls, Gulf of Mexico  

Science Journals Connector (OSTI)

...Sciences Department, Texas A & M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA. imacdonald@falcon.tamucc...Support, U.S. Gov't, Non-P.H.S. | 0 Gases 0 Hydrocarbons 0 Petroleum 8052-42-4 asphalt...

I. R. MacDonald; G. Bohrmann; E. Escobar; F. Abegg; P. Blanchon; V. Blinova; W. Brückmann; M. Drews; A. Eisenhauer; X. Han; K. Heeschen; F. Meier; C. Mortera; T. Naehr; B. Orcutt; B. Bernard; J. Brooks; M. de Faragó

2004-05-14T23:59:59.000Z

440

Volcanic inflation measured in the caldera of Axial Seamount: Implications for magma supply and future  

E-Print Network [OSTI]

.W.Chadwick@noaa.gov) [1] Since 2000, ambient seawater pressure has been precisely measured at five seafloor benchmarks vehicle to deploy a mobile pressure recorder (MPR) in campaign-style surveys. Additionally, seawater with magma storage in a shallow reservoir underlying the caldera at a depth of $3.5 km, and the current

Nooner, Scott

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

Response of a bubble bearing viscoelastic fluid to rapid decompression: Implications for explosive volcanic eruptions  

E-Print Network [OSTI]

Response of a bubble bearing viscoelastic fluid to rapid decompression: Implications for explosive Abstract We conducted rapid decompression experiments using bubble-bearing viscoelastic fluid in a vertical of the bubbles, DP=Pg Ã?Po, to understand the behavior of bubbly-magmas under rapid decompression. We find

Manga, Michael

442

Palaeomagnetism and the age of the Cracow volcanic rocks (S Poland)  

Science Journals Connector (OSTI)

......related to the collision of Baltica with Kazakhstan as suggested by Mattern (2001). Figure...directions of Palaeo-Tethys subduction, and Kazakhstan plate collision are also marked. (b...Seghedi A., Oaile G., Gradinaru E., Radon S., 1995. Central and North Dobrogea......

J. Nawrocki; M. Fanning; A. Lewandowska; O. Polecho?ska; T. Werner

2008-08-01T23:59:59.000Z

443

Surface subsidence caused by mantle plumes and volcanic loading in large igneous provinces  

E-Print Network [OSTI]

, Shijie Zhong Department of Physics University of Colorado at Boulder, CO 80309, USA a b s t r a c ta r surface uplifts subsidence mantle plume loading Large igneous provinces form with massive flood basalts geological observations indicate surface subsidence in the central region before or during flood basalt

Zhong, Shijie

444

Using TDR and Inverse Modeling to Characterize Solute Transport in a Layered Agricultural Volcanic Soil  

Science Journals Connector (OSTI)

...ranges from 7 to 9 depending on the composition and degree of crystallinity (van Olphen...Assessing temporal variations in soil water composition with time domain reflectometry. Soil...mathematical model for simulating water and agrochemicals in the soil and vadose environment...

A. Ritter; R. Muñoz-Carpena; C. M. Regalado; M. Javaux; M. Vanclooster

445

CV-2a: Plutonic - Recent or Active Volcanism | Open Energy Information  

Open Energy Info (EERE)

Making. In: Proceedings. Thirty-Ninth Workshop on Geothermal Reservoir Engineering; 20140224; Stanford, California. Stanford, California: Stanford University; p. 8 Inga...

446

Groundwater flow in a volcanic–sedimentary coastal aquifer: Telde area, Gran Canaria, Canary Islands, Spain  

Science Journals Connector (OSTI)

Groundwater conditions in a 75- km2...coastal area around the town of Telde in eastern Gran Canaria island have been studied. Pliocene to Recent...2 day?1; 5 and 0.5 m day?1, respectively). These two formations a...

M. C. Cabrera; E. Custodio

2004-06-01T23:59:59.000Z

447

Ambient noise Rayleigh wave tomography of New Zealand  

Science Journals Connector (OSTI)

......positions (Taupo green, Hamilton blue...s1 obtained in the current study (Fig. 14b...toward which the energy propagates. For...reveal that the high-energy west, south and...contrast, the low-energy north coast (between...during a short-term internship. This work was undertaken......

Fan-Chi Lin; Michael H. Ritzwoller; John Townend; Stephen Bannister; Martha K. Savage

2007-08-01T23:59:59.000Z

448

An Approach to Problems of a Geothermal Mercury Survey, Puna, Hawaii | Open  

Open Energy Info (EERE)

Approach to Problems of a Geothermal Mercury Survey, Puna, Hawaii Approach to Problems of a Geothermal Mercury Survey, Puna, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: An Approach to Problems of a Geothermal Mercury Survey, Puna, Hawaii Abstract Concentrations of soil mercury of 15 to 1250ppb were determined in the Puna geothermal areaon the lower east rift zone of Kilauea volcano. As the area is young and volcanically active a wide range of soils exist. Hg concentrations are partly controlled by such factors as soil development and organic content, which tend to complicate interpretation of the absolute concentrations measured. The pH of both ground gas and soil may also influence transport and fixation of the Hg, and some low pH soils may be due to SO2 and C02 in ground gas. By relating the Hg concentration of

449

Lake Nyos and Mammoth Mountain: What Do They Tell Us about the Security of Engineered Storage of CO2 Underground?  

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

Lake Nyos aNd MaMMoth MouNtaiN: Lake Nyos aNd MaMMoth MouNtaiN: What do they teLL us about the security of eNgiNeered storage of co 2 uNdergrouNd? Introduction Lake Nyos in the Northwest Province of Cameroon in western Africa and Mammoth Mountain in California are the sites of two well-known underground releases of carbon dioxide (CO 2 ) in nature, both with adverse effects. Both Lake Nyos and Mammoth Mountain are atop current or former volcanoes and the released CO 2 is volcanic in origin (sometimes referred to as magmatic origin). Molten rock (magma) far below the Earth's surface contains entrained amounts of water, CO 2 , and other gases. If the magma rises toward the Earth's surface, the pressure it is under is reduced and the entrained gases begin to expand. The expansion of the

450

An Integrated Geophysical Study Of The Northern Kenya Rift | Open Energy  

Open Energy Info (EERE)

Kenya Rift Kenya Rift Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Integrated Geophysical Study Of The Northern Kenya Rift Details Activities (0) Areas (0) Regions (0) Abstract: The Kenyan part of the East African rift is among the most studied rift zones in the world. It is characterized by: (1) a classic rift valley, (2) sheer escarpments along the faulted borders of the rift valley, (3) voluminous volcanics that flowed from faults and fissures along the rift, and (4) axial and flank volcanoes where magma flow was most intense. In northern Kenya, the rift faults formed in an area where the lithosphere was weakened and stretched by Cretaceous-Paleogene extension, and in central and southern Kenya, it formed along old zones of weakness at the

451

Microbial Life on the Seafloor: Where's the Energy?  

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

Microbial Life on the Seafloor: Where's the Microbial Life on the Seafloor: Where's the Energy? image 1 Pillow basalts on the side of the volcano. image 2 Pillow basalts from from inside the Pisces V. During the past 10 years there has been a growing recognition that the vast expanse of bare, unsedimented rocks on the seafloor harbor abundant and diverse microbial communities. Surprisingly, biofilms rapidly develop as volcanic rocks are produced at the mid-ocean ridges and Seamounts, and these types of microbial biomes are relatively unexplored. Geochemists, oceanographers and microbiologist have all questioned the role of the microbial organisms in the breakdown and weathering of the ocean crust. In particular, the energy sources and metabolisms supporting this rock-hosted microbial biosphere are currently unknown. Since the majority of the cold,

452

Direct-Current Resistivity Survey At Kilauea Summit Area (Keller, Et Al.,  

Open Energy Info (EERE)

1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity Survey At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness useful DOE-funding Unknown Notes An electromagnetic sounding survey by Jackson and Keller (1972) defined a strong resistivity anomaly above the center of inflation associated with volcanic activity during the early 1960's. References George V. Keller, L. Trowbridge Grose, John C. Murray, Catherine K. Skokan (1979) Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Direct-Current_Resistivity_Survey_At_Kilauea_Summit_Area_(Keller,_Et_Al.,_1979)&oldid=510532

453

A visit to Mount St. Helens  

SciTech Connect (OSTI)

The May 18, 1980, eruption displaced roughly 2.6 km[sup 3] of rock and devastated more than 500 km[sup 2] of forest, mostly to the north of the mountain. Trees within 10--15 km of the mountain peak were burned and uprooted. Beyond that, high winds and flying debris created a blowdown zone. Up to 150 m of rock and ice covered some areas. Accumulations of ash were measured as much as 330 km from the volcano. Mud flows choked nearby rivers and streams. Two years later, the US Congress established the 44,000-hectare Mount St. Helens National Volcanic Monument. The Act essentially directed the USDA Forest Service to allow the area to recover naturally. The paper reviews what changes the ecosystem has been going through since the eruption and the lessons learned that suggest some new resource management techniques.

Meadows, D.G.

1994-04-01T23:59:59.000Z

454

Direct-Current Resistivity At Kilauea Summit Area (Keller, Et Al., 1979) |  

Open Energy Info (EERE)

Summit Area (Keller, Et Al., 1979) Summit Area (Keller, Et Al., 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness useful DOE-funding Unknown Notes An electromagnetic sounding survey by Jackson and Keller (1972) defined a strong resistivity anomaly above the center of inflation associated with volcanic activity during the early 1960's. References George V. Keller, L. Trowbridge Grose, John C. Murray, Catherine K. Skokan (1979) Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Direct-Current_Resistivity_At_Kilauea_Summit_Area_(Keller,_Et_Al.,_1979)&oldid=594370"

455

Brittle creep in basalt and its application to time-dependent volcano deformation M.J. Heap a,b,  

E-Print Network [OSTI]

-dependent, subcritical crack growth, of which stress corrosion is the most important mechanism in the Earth's brittle with the chemically active pore fluid; commonly water or some aqueous solution in the upper crust. This allows crack

456

Deformation between 1989 and 1997 at Piton de la Fournaise volcano retrieved from correlation of panchromatic airborne images  

Science Journals Connector (OSTI)

......Nevertheless, the uncertainty on aerial image offset measurements at...measured by correlation of aerial and Quickbird satellite images...295-299. Froger J-L. , Fukushima Y., Briole P., Staudacher...Res. Lett., 31, L14601. Fukushima Y. , Cayol V., Durand P......

Marcello de Michele; Pierre Briole

2007-04-01T23:59:59.000Z

457

Fumarole-Supported Islands of Biodiversity within a Hyperarid, High-Elevation Landscape on Socompa Volcano, Puna de Atacama, Andes  

Science Journals Connector (OSTI)

...including all forms of fixed C) are wind transported and deposited, with some microbial...this community signal was derived from wind- or water-deposited material dislodged...microarthropod mites are also likely capable of wind-borne dispersal (57). Therefore...

Elizabeth K. Costello; Stephan R. P. Halloy; Sasha C. Reed; Preston Sowell; Steven K. Schmidt

2008-12-12T23:59:59.000Z

458

A new technique of radiation thermometry using a consumer digital camcorder: Observations of red glow at Aso volcano, Japan  

Science Journals Connector (OSTI)

We newly developed a technique of radiation thermometry using a Sony’s consumer digital camcorder. Our system is not only convenience and cost effective but with a better performance than previous infrared the...

Takeshi Saito; Satoshi Sakai; Isao Iizawa; Eriko Suda…

2005-02-01T23:59:59.000Z

459

Druitt, T. H. & Kokelaar, B. P. (eds) 2002. The Eruption of Soufrière Hills Volcano, Montserrat, from 1995 to 1999.:  

Science Journals Connector (OSTI)

...established'. Great stuff and a real eye opener to the personalities...surrounded by dense housing estates with their attendant vandalism...Valuing the Resource: the Sustainable Ap-proach', was introduced...in Somerset has remained a sustainable resource despite two centuries...

Mike Branney

460

Yaroshevskite, Cu9O2(VO4)4Cl2, a new mineral from the Tolbachik volcano, Kamchatka, Russia  

Science Journals Connector (OSTI)

...26 Temperature (K) 293(2) Radiation and wavelength (a) MoKalpha...single-crystal diffractometer (MoKalpha radiation) equipped with an image-plate...structure of kamchatkite, a new naturally occuring oxychloride sulphate of potassium...

I. V. Pekov; N. V. Zubkova; M. E. Zelenski; V. O. Yapaskurt; Yu. S. Polekhovsky; O. A. Fadeeva; D. Yu. Pushcharovsky

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

The Behaviour of Base Metals in Arc-Type Magmatic-Hydrothermal Systems Insights from Merapi Volcano,  

E-Print Network [OSTI]

zone stratovolcanoes provide important windows on the magmatic-hydrothermal processes at playThe Behaviour of Base Metals in Arc-Type Magmatic- Hydrothermal Systems ­ Insights from Merapi systems include a shallow magmatic reservoir (the porphyry stock), an overlying hydrothermal cell, its

Barnes, Sarah-Jane

462

Fumarole-Supported Islands of Biodiversity within a Hyperarid, High-Elevation Landscape on Socompa Volcano, Puna de Atacama, Andes  

Science Journals Connector (OSTI)

...sustained by areas of steam-warmed ground...of the fumarolic system for comparison. Assessments of basic soil properties...from two nearby steam vents by using...global-positioning-system device (Garmin...alignment search tool (BLAST) (2...

Elizabeth K. Costello; Stephan R. P. Halloy; Sasha C. Reed; Preston Sowell; Steven K. Schmidt

2008-12-12T23:59:59.000Z

463

Drainage network development in the Keanakko`i tephra, Klauea Volcano, Hawai`i: Implications for fluvial erosion  

E-Print Network [OSTI]

to better understand when valley networks were active, how long they were active, and the processes involved for fluvial erosion and valley network formation on early Mars Robert A. Craddock,1 Alan D. Howard,2 Rossman P to characterize Martian valley and channel networks. To date, however, little attention has been paid to the role

Hawai'i at Manoa, University of

464

Anatomy of 1986 Augustine volcano eruptions as recorded by multispectral image processing of digital AVHRR weather satellite data  

Science Journals Connector (OSTI)

Eighteen digital AVHRR (advanced very high resolution radiometer) data sets from NOAA-6 and NOAA-9 polar-orbiting satellites recorded between 27 March and 7 April...6–8x107...metric tonnes/day) facilitated intens...

Rick E Holaske; William I Rose

1991-08-01T23:59:59.000Z

465

157Recent Events: A Perspective on Carbon Dioxide On March 21, 2010 the Eyjafjalla Volcano in Iceland erupted, and the  

E-Print Network [OSTI]

, a major oil spill began in the Gulf of Mexico. Although the preferred method for dealing with the oil the combustion process. Problem 1 ­ The Gulf Oil Spill is predicted to generate 200,000 gallons of crude oil://spacemath.gsfc.nasa.gov #12;Answer Key 157 Problem 1 ­ The Gulf Oil Spill is predicted to generate 200,000 gallons of crude

466

Spatial data analysis for exploration of regional scale geothermal resources  

Science Journals Connector (OSTI)

Abstract Defining a comprehensive conceptual model of the resources sought is one of the most important steps in geothermal potential mapping. In this study, Fry analysis as a spatial distribution method and 5% well existence, distance distribution, weights of evidence (WofE), and evidential belief function (EBFs) methods as spatial association methods were applied comparatively to known geothermal occurrences, and to publicly-available regional-scale geoscience data in Akita and Iwate provinces within the Tohoku volcanic arc, in northern Japan. Fry analysis and rose diagrams revealed similar directional patterns of geothermal wells and volcanoes, NNW-, NNE-, NE-trending faults, hotsprings and fumaroles. Among the spatial association methods, WofE defined a conceptual model correspondent with the real world situations, approved with the aid of expert opinion. The results of the spatial association analyses quantitatively indicated that the known geothermal occurrences are strongly spatially-associated with geological features such as volcanoes, craters, NNW-, NNE-, NE-direction faults and geochemical features such as hotsprings, hydrothermal alteration zones and fumaroles. Geophysical data contains temperature gradients over 100 °C/km and heat flow over 100 mW/m2. In general, geochemical and geophysical data were better evidence layers than geological data for exploring geothermal resources. The spatial analyses of the case study area suggested that quantitative knowledge from hydrothermal geothermal resources was significantly useful for further exploration and for geothermal potential mapping in the case study region. The results can also be extended to the regions with nearly similar characteristics.

Majid Kiavarz Moghaddam; Younes Noorollahi; Farhad Samadzadegan; Mohammad Ali Sharifi; Ryuichi Itoi

2013-01-01T23:59:59.000Z

467

Geothermal energy resource investigations at Mt. Spurr, Alaska  

SciTech Connect (OSTI)

Spurr volcano is a composite Quaternary cone of largely andesitic composition located on the west side of Cook Inlet about 80 miles west of Anchorage and about 40 miles from the Beluga electrical transmission line. Geologic mapping (Plate 1-1) shows that the present summit depression was produced by a Mt. St. Helens-type sector collapse, rather than by a caldera collapse. Geochronologic and previous tephrachronologic studies show that there has been an active magmatic system at Spurr volcano during the late Pleistocene-to-Holocene time interval that is of critical interest for geothermal energy resource assessment. Major effort was devoted to geochemical and geophysical surveys of the accessible area south of Mt. Spurr, in addition to geologic mapping and geochronologic studies. Many coincident mercury and helium anomalies were found, suggesting the presence of geothermal systems at depth. Extremely large electrical self-potential anomalies were also found, together with extensive zones of low resistivity discovered by our controlled-source audiomagnetotelluric survey. The juxtaposition of all of these different types of anomalies at certain areas on the south slope of Crater Peak indicates the presence of a geothermal system which should be accessible by drilling to about 2000 ft depth. It is also evident that there is a strong volcanic hazard to be evaluated in considering any development on the south side of Mt. Spurr. This hazardous situation may require angle drilling of production wells from safer areas and placement of power generation facilities at a considerable distance from hazardous areas.

Turner, D.L.; Wescott, E.M. (eds.)

1986-12-01T23:59:59.000Z

468

E-Print Network 3.0 - acrodermatitis enteropathica-like eruption...  

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

BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA Summary: FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO,...

469

E-Print Network 3.0 - acneiform eruptions Sample Search Results  

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

BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA Summary: FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO,...

470

Newberry EGS Demonstration | Department of Energy  

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

Production: Evaluation of Stimulation at the Newberry Volcano EGS Demonstration Site Microearthquake Technology for EGS Fracture Characterization Newberry Volcano EGS Demonstration...

471

Shallow Drilling In The Salton Sea Region, The Thermal Anomaly  

SciTech Connect (OSTI)

During two shallow thermal drilling programs, thermal measurements were obtained in 56 shallow (76.2 m) and one intermediate (457.3 m) depth holes located both onshore and offshore along the southern margin of the Salton Sea in the Imperial Valley, California. These data complete the surficial coverage of the thermal anomaly, revealing the shape and lateral extent of the hydrothermal system. The thermal data show the region of high thermal gradients to extend only a short distance offshore to the north of the Quaternary volcanic domes which are exposed along the southern shore of the Salton Sea. The thermal anomaly has an arcuate shape, about 4 km wide and 12 km long. Across the center of the anomaly, the transition zone between locations exhibiting high thermal gradients and those exhibiting regional thermal gradients is quite narrow. Thermal gradients rise from near regional (0.09 C/m) to extreme (0.83 C/m) in only 2.4 km. The heat flow in the central part of the anomaly is >600 mW/m{sup 2} and in some areas exceeds 1200 mW/m{sup 2}. The shape of the thermal anomaly is asymmetric with respect to the line of volcanoes previously thought to represent the center of the field, with its center line offset south of the volcanic buttes. There is no broad thermal anomaly associated with the magnetic high that extends offshore to the northeast from the volcanic domes. These observations of the thermal anomaly provide important constraints for models of the circulation of the hydrothermal system. Thermal budgets based on a simple model for this hydrothermal system indicate that the heat influx rate for local ''hot spots'' in the region may be large enough to account for the rate of heat flux from the entire Salton Trough.

Newmark, R. L.; Kasameyer, P. W.; Younker, L. W.

1987-01-01T23:59:59.000Z

472

Disruptive Event Biosphere Doser Conversion Factor Analysis  

SciTech Connect (OSTI)

The purpose of this report was to document the process leading to, and the results of, development of radionuclide-, exposure scenario-, and ash thickness-specific Biosphere Dose Conversion Factors (BDCFs) for the postulated postclosure extrusive igneous event (volcanic eruption) at Yucca Mountain. BDCF calculations were done for seventeen radionuclides. The selection of radionuclides included those that may be significant dose contributors during the compliance period of up to 10,000 years, as well as radionuclides of importance for up to 1 million years postclosure. The approach documented in this report takes into account human exposure during three different phases at the time of, and after, volcanic eruption. Calculations of disruptive event BDCFs used the GENII-S computer code in a series of probabilistic realizations to propagate the uncertainties of input parameters into the output. The pathway analysis included consideration of different exposure pathway's contribution to the BDCFs. BDCFs for volcanic eruption, when combined with the concentration of radioactivity deposited by eruption on the soil surface, allow calculation of potential radiation doses to the receptor of interest. Calculation of radioactivity deposition is outside the scope of this report and so is the transport of contaminated ash from the volcano to the location of the receptor. The integration of the biosphere modeling results (BDCFs) with the outcomes of the other component models is accomplished in the Total System Performance Assessment (TSPA), in which doses are calculated to the receptor of interest from radionuclides postulated to be released to the environment from the potential repository at Yucca Mountain.

M. Wasiolek

2000-12-28T23:59:59.000Z

473

Analysis and modelling of the aeromagnetic anomalies of Gran Canaria (Canary Islands)  

Science Journals Connector (OSTI)

In this paper we present a crustal magnetic model of the volcanic island of Gran Canaria based on aeromagnetic data. This magnetic study has made it possible to constrain the location and geometry of: (1) the mafic core of Gran Canaria, built as the result of the crystallization of magmas which rose from the mantle during the submarine and shield basaltic stages of its evolution. The most intense magnetic high, displayed over the NW part of the island likely shows the main feeding system of the shield volcano; (2) the residual syenitic shallow magma chamber which fed the salic volcanic activity in the center of the island, linked to the formation of the Tejeda caldera and to the intrusion of felsic rocks which made up a cone sheet; (3) a reversely magnetized linear intrusion located in the marine area to the NW of the island, which could be related to the magmatic source of the submarine volcanism between Gran Canaria and Tenerife. Most of these magnetic sources show a linear pattern with trends that are in close agreement with the orientations of previously identified fractures. The magmatic intrusion to the NW of the island could be related with a WSW–ENE active fault between Gran Canaria and Tenerife, while the main trend and location of the mafic core agree with a NW–SE fault suggested by geological studies. This means that these magnetic sources are the result of the ascent and intrusion of magma along regional fractures. Therefore, this study provides fresh data which demonstrate the influence of regional tectonics on the growth of Gran Canaria during its entire evolution. Finally, the spectral analysis of the magnetic anomaly map suggests that it is possible that rocks located at mantle-like depths (from the Moho to about 23 km) behave as magnetic sources, a fact that can be related with the magmatic underplating detected by other geophysical techniques.

Isabel Blanco-Montenegro; J.Miquel Torta; Alicia Garc??a; Vicente Araña

2003-01-01T23:59:59.000Z

474

Over the past few years, a lot of research has been done on volcanic lakes. Research on this subject is important, as the chemical composition of volcanic lakes can clearly reflect upcoming  

E-Print Network [OSTI]

of the hydrothermal system of such a lake. By having knowledge over such systems, eruptions may be predicted better functionalities for safely processing the data has been created. The system makes use of various methods to insure hydrothermal system. Other then heat, the rising water can also bring along dissolved minerals, changing

Emmerich, Michael

475

Origin of geochemical heterogeneity in the mantle : constraints from volcanism associated with Hawaiian and Kerguelen mantle plumes  

E-Print Network [OSTI]

Lavas derived from long-lived mantle plumes provide important information of mantle compositions and the processes that created the geochemical heterogeneity within the mantle. Kerguelen and Hawaii are two long-lived mantle ...

Xu, Guangping

2007-01-01T23:59:59.000Z

476

Cryospheric Response to Volcanic Eruptions in the1 Paleoclimate Model Intercomparison Project 3 Last Millennium Simulations2  

E-Print Network [OSTI]

) project to determine whether current state-of-the-art50 models produce sudden changes and persistence beyond a decade. Sea ice54 expansion in the North Atlantic is seen in some PMIP3 models after large eruptions, although55 none of these models produce significant centennial-scale effects. Warm biases

Robock, Alan

477

Magmatism, ash-flow tuffs, and calderas of the ignimbrite flareup in the western Nevada volcanic field, Great Basin, USA  

Science Journals Connector (OSTI)

...with many geologists, especially Joe Colgan, Jim Faulds, Nick Hinz, Myron Best, Mark Hudson, Eric Christiansen, Brian...R.F., Andriessen, P.A.M., Mehnert, H.H., and Merritt, V.M., 1986, Ages of igneous and hydrothermal events in...

Christopher D. Henry; David A. John

478

Absence of Cocos plate subduction-related basic volcanism in southern Mexico: A unique case on Earth?  

Science Journals Connector (OSTI)

...included is composition of subducted Cocos plate (Verma, 2001; AOC-altered oceanic crust); basic rocks from rifts are shown...included is composition of subducted Cocos plate (Verma, 2001; AOC--altered oceanic crust); basic rocks from rifts are shown...

479

Ambient Airborne Solids Concentrations Including Volcanic Ash at Hanford, Washington Sampling Sites Subsequent to the Mount St. Helens Eruption  

SciTech Connect (OSTI)

A major eruption of Mount St. Helens occurred on May 18, 1980. Subsequently, airborne solid concentrations were measured as a function of time at two sites within the southern edge of the fallout plume about 211 km east of Mount St. Helens. This ash was a source for investigating area-wide resuspension. Rain had a variable effect on decreasing airborne concentrations from resuspension. From 0.5 to 1.5 cm of rain were required to significantly reduce airborne solid concentrations through July. For a more aged resuspension source in September, a rain of 2.0 cm had a negligible effect. A monthly average threshold-wind speed for resuspension was defined as 3.6 m/s. For monthly-average wind speeds less than the threshold wind speed, monthly-average airborne concentrations tended to decrease with time. A decrease was recorded between September and October. For this 4-month time period, the half-life was on the order of 50 days, corresponding to a weathering rate of 5.1 year/sup -1/.

Sehmel, G.A.

1982-12-20T23:59:59.000Z

480

Stratospheric Loading of Sulfur from Explosive Volcanic Eruptions1 Gregg J. S. Bluth, William I. Rose, Ian E. Sprod,2  

E-Print Network [OSTI]

. Rose, Ian E. Sprod,2 and Arlin J. Krueger3 Department of Geological Engineering and Sciences, Michigan Technological University, Houghton, Michigan 49931 A B S T R A C T This paper is an attempt to measure our the solar energy reaching the earth's surface. The sulfate aerosols stratosphere, roughly 1% of man

Rose, William I.

Note: This page contains sample records for the topic "volcano taupo volcanic" 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

A detailed study of the site effects in the volcanic area of Campi Flegrei using empirical approaches  

Science Journals Connector (OSTI)

......To obtain a detailed site-effect estimation of the Campi Flegrei...data set used for this site-effect evaluation in the Campi Flegrei...2005). For two weeks, the ship Le Nadir produced source shots...behaviour suggests a topographical effect. These observations agree with......

Anna Tramelli; Danilo Galluzzo; Edoardo Del Pezzo; Mauro A. Di Vito

2010-08-01T23:59:59.000Z

482

Magmatism at the west Iberia non-volcanic rifted continental margin: evidence from analyses of magnetic anomalies  

Science Journals Connector (OSTI)

......recorded on land in the Lusitanian Basin (Ribeiro et al. 1979; Martins...tectonics in the Jeanne d'Arc Basin, offshore Newfoundland: implications...Australia: Great Australian Bight and western sections, Geol...in the Australian-Antarctic Basin: are they isochrons?, J......

S. M. Russell; R. B. Whitmarsh

2003-09-01T23:59:59.000Z

483

Magmatism at the west Iberia non-volcanic rifted continental margin: evidence from analyses of magnetic anomalies  

Science Journals Connector (OSTI)

......the production of greater volumes of melt leads...the Jeanne d'Arc Basin, offshore Newfoundland...margin of Australia: Great Australian Bight and western sections...magnetic anomalies in the Australian-Antarctic Basin: are they isochrons......

S. M. Russell; R. B. Whitmarsh

2003-09-01T23:59:59.000Z

484

Time-varying autoregressive model for spectral analysis of microseismic experiments and long-period volcanic events  

Science Journals Connector (OSTI)

......parts of the signal. The study of long-term phenomena, such as resonance...operations, carbon capture and storage and waste water disposal, suffers from...experiments, or CO2 injection and storage. Likewise, a better time-frequency......

J. B. Tary; R. H. Herrera; M. van der Baan

2014-01-01T23:59:59.000Z

485

IGNEOUS, METAMORPHIC AND VOLCANIC STUDIES Mike Bickle, Dan McKenzie, Andy Woods, Marie Edmonds, Albert Galy, Sally Gibson,  

E-Print Network [OSTI]

. Hydrothermal processes We are studying magmatic and hydrothermal processes at mid-ocean ridges and ophiolites as well as using hydrothermal minerals compositions as a constraint on the chemical composition of past ocean waters. Carbon sequestration We are studying the field geology, petrology and geochemistry

Cambridge, University of

486

Upper-mantle anisotropy beneath the Cameroon Volcanic Line and Congo Craton from shear wave splitting measurements  

Science Journals Connector (OSTI)

......material from a large rising thermal anomaly beneath southern Ethiopia...Central Africa from Angola to Sudan. In the Archaean, the Gabon-Cameroon...attributed to convection driven by thermal gradients between the asthenosphere...upper-mantle LPO due to the thermal gradient at the edge of the......

Franklin W. Koch; Douglas A. Wiens; Andrew A. Nyblade; Patrick J. Shore; Rigobert Tibi; B. Ateba; C.T. Tabod; J. M. Nnange

2012-07-01T23:59:59.000Z

487

NAME M/YEAR MASTERS THESES TITLES COMMENTS SCOPEL, ROBERT B Jun-49 The Volcanic History of Jackson Hole, Wyoming  

E-Print Network [OSTI]

The Coldwater Formation in the Area of the Allegan Area of Southwestern Michigan ROWE, DEAN E Aug-51 Hole, Wyoming SIMONS, MERTON E Aug-49 Insoluble Residues of the Traverse Group in the Petoskey Area. Jun-50 Geology of an Area North of Gardener, Montana MORDEN, AUDLEY D., JR Jun-50 Stratigraphy

Berdichevsky, Victor

488

Study of Volcanic Sources at Long Valley Caldera, California, Using Gravity Data and a Genetic Algorithm Inversion Technique  

Science Journals Connector (OSTI)

We model the source inflation of the Long Valley Caldera, California, using a genetic algorithm ... numerous attempts to model the magma injection at Long Valley Caldera from deformation data, this has proven...

M. Charco; J. Fernández; K. Tiampo…

2004-01-01T23:59:59.000Z

489

Study of Volcanic Sources at Long Valley Caldera, California, Using Gravity Data and a Genetic Algorithm Inversion Technique  

Science Journals Connector (OSTI)

We model the source inflation of the Long Valley Caldera, California, using a genetic algorithm ... numerous attempts to model the magma injection at Long Valley Caldera from deformation data, this has proven...

M. Charco; J. Fernández; K. Tiampo; M. Battaglia; L. Kellogg…

2004-07-01T23:59:59.000Z

490

Monitoring unrest in a large silicic caldera, the long Valley-inyo craters volcanic complex in east-central California  

Science Journals Connector (OSTI)

Recent patterns of geologic unrest in long Valley caldera in east-central California emphasize that...

D. P. Hill

1984-01-01T23:59:59.000Z

491

Potential impact on water resources from future volcanic eruptions at Long Valley, Mono County, California, U.S.A.  

Science Journals Connector (OSTI)

Earthquakes, ground deformation, and increased geothermal activity at Long Valley caldera after mid-1980 suggest the possibility ... Mono Basin plus surface and groundwater in Owens Valley accounts for about 80 p...

R. Forrest Hopson

492

Time-varying autoregressive model for spectral analysis of microseismic experiments and long-period volcanic events  

Science Journals Connector (OSTI)

......than the brittle failure energy corresponding to the...a part of the missing energy. Fluid injection monitoring...applications, such as geothermal operations, carbon capture...limitation. As the needs in energy are growing and climate...and their computational cost. 2 METHODS 2.1 Short-time......

J. B. Tary; R. H. Herrera; M. van der Baan

2014-01-01T23:59:59.000Z

493

40Ar/39Ar geochronology, paleomagnetism, and evolution of the Boring volcanic field, Oregon and Washington, USA  

Science Journals Connector (OSTI)

...at each site using a portable gasoline-powered drill, and were oriented...Portland Basin-A (big) river runs through it: GSA Today, v...Burns, S., 2011, A tunnel runs through it-An inside view...Least squares fitting of a straight line with correlated errors...

Robert J. Fleck; Jonathan T. Hagstrum; Andrew T. Calvert; Russell C. Evarts; Richard M. Conrey

494

Behaviour of a small sedimentary volcanic aquifer receiving irrigation return flows: La Aldea, Gran Canaria, Canary Islands (Spain)  

Science Journals Connector (OSTI)

In many arid and semi-arid areas, intensive cultivation is practiced despite water commonly being a limiting factor. Often, irrigation water is from local aquifers or imported from out-of-area aquifers and surfac...

T. Cruz-Fuentes; J. Heredia; M. C. Cabrera; E. Custodio

2014-06-01T23:59:59.000Z

495

Origin and diagenesis of the Roque Nublo breccia, Gran Canaria (Canary Islands) — Petrology of roque nublo volcanics, II  

Science Journals Connector (OSTI)

The Pliocene Roque Nublo Series, the second of three major magmatic series on Gran Canaria (Canary Islands), consists of a lower...

G. Brey; H. U. Schmincke

1980-01-01T23:59:59.000Z

496

Plutonic rocks of intermediate composition on Gran Canaria: the missing link of the bimodal volcanic rock suite  

Science Journals Connector (OSTI)

Analysis of abundant plutonic fragments in the voluminous Miocene rhyolitic–basaltic composite ignimbrite P1, the initial felsic cooling unit overlying the basaltic shield on Gran Canaria, helps to solve the prob...

B. Freundt-Malecha

2001-07-01T23:59:59.000Z

497

POS: A Practical Order Statistics Service for Wireless Sensor Networks  

E-Print Network [OSTI]

of different environments, including the Golden Gate Bridge [1], Great Duck Island [2] and Tungurahua volcano

Cox, Landon

498

Petrogenesis of intraplate lavas from isolated volcanoes in the Pacific : implications for the origin of the enriched mantle source of OIB  

E-Print Network [OSTI]

doi:10.1029/2003GC000597. Sinton, J. M. , D. S. Wilson, D.10.1016/0012-821X(83)90083-3. Sinton, J. M. , R. C. Price,296. Cushman, B. , J. Sinton, G. Ito, and J. Eaby Dixon (

Tian, Liyan

2011-01-01T23:59:59.000Z

499

Hydrogeology of Stromboli volcano, Aeolian Islands (Italy) from the interpretation of resistivity tomograms, self-potential, soil temperature and soil CO2 concentration measurements  

Science Journals Connector (OSTI)

......France 9 Earth and Atmospheric Sciences Department...can occur when water encounters a...measurements with a generator and a voltmeter...two-phase (liquid water and steam) flow...concentration below atmospheric level (350 ppm...The evidence of atmospheric levels of soil...infiltration of meteoric water can flow on the......

A. Revil; A. Finizola; T. Ricci; E. Delcher; A. Peltier; S. Barde-Cabusson; G. Avard; T. Bailly; L. Bennati; S. Byrdina; J. Colonge; F. Di Gangi; G. Douillet; M. Lupi; J. Letort; E. Tsang Hin Sun

2011-09-01T23:59:59.000Z

500

Petrogenesis of intraplate lavas from isolated volcanoes in the Pacific : implications for the origin of the enriched mantle source of OIB  

E-Print Network [OSTI]

ppm) a Indian MORB mantle a AOC Fluid b Sediment Melt c O1Altered oceanic crust (AOC) fluid; trace element composition

Tian, Liyan

2011-01-01T23:59:59.000Z