Journal ArticleDOI
Standard for Reporting Concentrations of Deuterium and Oxygen-18 in Natural Waters.
TLDR
A standard, based on the set of ocean water samples used by Epstein and Mayeda to obtain a reference standard for oxygen-18 data, but defined relative to the National Bureau of Standards isotopic reference water sample, is proposed for reporting both deuterium and oxygen- 18 variations in natural watersrelative to the same water.Abstract:
A standard, based on the set of ocean water samples used by Epstein and Mayeda to obtain a reference standard for oxygen-18 data, but defined relative to the National Bureau of Standards isotopic reference water sample, is proposed for reporting both deuterium and oxygen-18 variations in natural waters relative to the same water. The range of absolute concentrations of both isotopes in meteoric-waters is discussed.read more
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Mineralization and Alteration of a Modern Seafloor Massive Sulfide Deposit Hosted in Mafic Volcaniclastic Rocks
Melissa O. Anderson,Melissa O. Anderson,Mark D. Hannington,Mark D. Hannington,Timothy F. McConachy,John Jamieson,Maria Anders,Henning Wienkenjohann,Harald Strauss,Thor H. Hansteen,Sven Petersen +10 more
TL;DR: Tinakula as discussed by the authors is the first seafloor massive sulfide deposit described in the Jean Charcot troughs and provides insights into deposit geology and especially hydrothermal processes operating in the shallow subsurface.
ReportDOI
Hydrogeology and geochemistry of the unsaturated zone, radioactive waste management complex, Idaho National Engineering Laboratory, Idaho
C.T. Rightmire,B.D. Lewis +1 more
TL;DR: In this article, a study on the geochemistry of the unsaturated zone at the Radioactive Waste Management complex (RWMC), Idaho National Engineering Laboratory, on the eastern Snake River Plain in southeastern Idaho was done.
Journal ArticleDOI
Using hydrochemical and stable isotopic (δ2H, δ18O, δ11B, and δ37Cl) data to understand groundwater evolution in an unconsolidated aquifer system in the southern coastal area of Laizhou Bay, China
TL;DR: Li et al. as discussed by the authors analyzed the origin of Quaternary brines and groundwater salinization processes at Laizhou Bay using hydrochemical and δ2H, δ18O, βB and βCl data.
Journal ArticleDOI
Isotopic studies of marbles in the Sanbagawa metamorphic terrain, central Shikoku, Japan
TL;DR: In this paper, carbon, oxygen and strontium isotopic studies were carried out on marbles occurring in crystalline schists and epidote amphibolites of the Sanbagawa metamorphic terrain, central Shikoku, Japan, in order to estimate metamorphoric temperatures and to elucidate their origin.
Journal ArticleDOI
Fluid geochemistry of natural manifestations from the Southern Poroto–Rungwe hydrothermal system (Tanzania): Preliminary conceptual model
Manuella Delalande,Laurent Bergonzini,Fabrizio Gherardi,Massimo Guidi,Luc André,Issah Abdallah,David Williamson,David Williamson +7 more
TL;DR: In this article, the authors combined chemical and isotopic results show that the composition of hot springs is consistent with a mixing between cold surface fresh (SFW) and deep hot mineralised water, indicating that the deep-originated fluids also supply most of the aqueous species dissolved in the surface waters used as local potable water.
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Journal ArticleDOI
Isotopic Variations in Meteoric Waters
TL;DR: The relationship between deuterium and oxygen-18 concentrations in natural meteoric waters from many parts of the world has been determined with a mass spectrometer and shows a linear correlation over the entire range for waters which have not undergone excessive evaporation.
Journal ArticleDOI
Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide
TL;DR: In this paper, Niee's and Solenhofen standards were compared to the Chicago PDB standard for carbon and oxygen isotope ratios, and the correction factors for instrumental effects and for the nature of the mass spectra were derived.
Journal ArticleDOI
Variation of O18 content of waters from natural sources
S Epstein,Toshiko K. Mayeda +1 more
TL;DR: A number of marine water and fresh water samples were examined for the relative O18O16 ratio, and the variation of this ratio was determined to a precision of ± 1% as mentioned in this paper.
Journal ArticleDOI
Effect of Low Concentrations of Carbon Dioxide on Photosynthesis Rates of Two Races of Oxyria.
TL;DR: Alpine plants of Oxyria digyna have higher apparent photosynthesis rates at various carbon dioxide concentrations than arctic, sea-level plants of the same species, which may be involved in the survival of plants at high elevations.