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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Genesis of the Ancun epithermal gold deposit, southeast China: Evidence from fluid inclusion and stable isotope data
Su-Ning Li,Pei Ni,Tan Bao,Hong-Liang Xiang,Zhe Chi,Guo-Guang Wang,Bao Huang,Jun-Ying Ding,Bao-Zhang Dai +8 more
TL;DR: Based on the characteristics of mineralization, alteration mineral assemblages, fluid inclusions, and H-O-S isotope data, the Ancun gold deposit can be classified as an intermediate-sulfidation epithermal deposit as mentioned in this paper.
Journal ArticleDOI
Evidence of Younger Dryas and Neoglacial cooling in a Late Quaternary palaeotemperature record from a speleothem in eastern Victoria, Australia
TL;DR: A calcitic stalagmite collected from a limestone cave in the Buchan area of eastern Victoria has been dated by three mass-spectrometric uranium series analyses as discussed by the authors, showing that temperatures were below present-day values at all times, but particularly cool conditions are indicated between 12.3 and 11.4 ka, and Neoglacial conditions occurred at about 3 ka.
Journal ArticleDOI
Coastal submarine hydrothermal activity off northern Baja California: 2. Evolutionary history and isotope geochemistry
TL;DR: A geochemical model of the Punta Banda submarine hydrothermal system (PBSHS) and Ensenada quadrangle subaerial hot springs is developed using water and gas chemistry.
Journal ArticleDOI
Evolution of the Early Oligocene Bonanza Caldera, northeast San Juan Volcanic Field, Colorado
Robert J. Varga,Brian M. Smith +1 more
TL;DR: The 36-Ma-old Bonanza caldera developed within a slightly older sequence of intermediate composition volcanics (Rawley Andesite), equivalent to the Conejos Formation of the greater San Juan volcanic field as mentioned in this paper.
Journal ArticleDOI
The hydrogeochemical characterization of Morsott-El Aouinet aquifer, Northeastern Algeria
TL;DR: A study of the hydrogeochemical processes in the Morsott-El Aouinet aquifer was carried out with the objective of identifying the geochemical processes and their relation with groundwater quality as well as to get an insight into the hydrochemical evaluation of groundwater as mentioned in this paper.
References
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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.