skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Inferring the source of evaporated waters using stable H and O isotopes

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1415545
Report Number(s):
LLNL-CONF-736538
DOE Contract Number:
AC52-07NA27344
Resource Type:
Conference
Resource Relation:
Conference: Presented at: American Geophysical Union, New Orleans, LA, United States, Dec 11 - Dec 15, 2017
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY

Citation Formats

Bowen, G, Putnam, A, Brooks, J R, Bowling, D, Oerter, E, and Good, S. Inferring the source of evaporated waters using stable H and O isotopes. United States: N. p., 2017. Web.
Bowen, G, Putnam, A, Brooks, J R, Bowling, D, Oerter, E, & Good, S. Inferring the source of evaporated waters using stable H and O isotopes. United States.
Bowen, G, Putnam, A, Brooks, J R, Bowling, D, Oerter, E, and Good, S. 2017. "Inferring the source of evaporated waters using stable H and O isotopes". United States. doi:. https://www.osti.gov/servlets/purl/1415545.
@article{osti_1415545,
title = {Inferring the source of evaporated waters using stable H and O isotopes},
author = {Bowen, G and Putnam, A and Brooks, J R and Bowling, D and Oerter, E and Good, S},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month = 8
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • Benthonic foraminifera and stable isotopes were used to evaluate the history of bottom water 70-74 Ma in the south Atlantic. Site 355 was above the CCD at a backtracked depth of 3400 +/- 300 m. The assemblages are interpreted as autochthonous and contain a mixture of upper-to-middle bathyal species (e.g., Gavelinella whitei, Gyroidinoides bandyi, and G. goudkoffi) and abyssal species. In the Argentine basin, Site 358 was below the CCD at a backtracked depth of 3700 + 300 m. Unlike Site 355, bathyal foraminifera present at Site 358 are interpreted as redeposited below the CCD. The different foraminiferal dissolution depthsmore » in the Brazil and Argentine basins indicate different bottom water chemistries and are reflected in oxygen and carbon isotope ratios of foraminiferal tests. Average oxygen isotope ratios at Site 355 are heavier than those at Site 358 by 3.3 per thousand, in part as the result of secondary calcite overgrowths on tests at Site 358. Average carbon isotope ratios at Site 355 are heavier than those at Site 358 by 0.9 per thousand. Bottom waters in the Brazil basin were different from those in the Argentine basin and may have been warm saline bottom waters (WSBW) like those proposed by Brass et al in 1982. This is supported by broad foraminiferal distributions, light oxygen ratios (warm water mass), heavy carbon ratios (young water mass), and a deeper calcite compensation depth in the Brazil basin.« less
  • A scanning ion microprobe with a resolution of 15 nm or better appears to be quite possible on the basis of a field-evaporation (EHD) ion source that has been developed and a high efficiency system for production and collection of negative secondary ions. The possibilities of still better systems for the analysis of the secondaries using either stopping-power or laser-induced-fluorescence methods of identification are discussed briefly.
  • The analysis of individual fecal samples collected for at least ten days following an oral dose of {sup 70}Zn provides data on transit time, absorption and the excretion of isotope that has been absorbed and then secreted back into the lumen of the intestine. The analysis of data from more than 80 human studies where enriched Zn stable isotopes were given orally has provided a valuable data base on Zn kinetics. A plot of enrichment in the fecal samples as a function of time reveals the average time of maximum appearance as well as the time limit needed for eliminationmore » of unabsorbed isotope. A plot of cumulative enrichment as a function of time reveals information on both absorption and secretion rate of absorbed isotope. This data base provides investigators with new information that they can use to optimize their data collection schemes and serves as a model for the study of other trace metals.« less