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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Complete chemical analyses of metamorphic hornblendes: implications for normalizations, calculated H 2 O activities, and thermobarometry
TL;DR: In this article, two hornblendes separated from amphibolites and granulites of the Grenville Orogen of Ontario have been quantitatively analyzed for major and minor elements by electron microprobe, for FeO/Fe2O3 by wet chemistry, and for H2O by manometric measurement as H2.
Journal ArticleDOI
The extent of oxygen isotope exchange between clay minerals and sea water
Hsueh-Wen Yeh,Samuel M. Savin +1 more
TL;DR: In this paper, the extent of oxygen isotopic exchange between detrital clay minerals and sea water was investigated by analyzing O18O16 ratios of separated fine-grained size fractions of deep-sea sediments from three North Pacific ocean cores.
Journal ArticleDOI
Evaluation of the impact of an uncontrolled landfill on surrounding groundwater quality, Zhoukou, China
TL;DR: Zhou et al. as mentioned in this paper examined groundwater inorganic contamination around a municipal landfill site in Zhoukou city, Henan province, China, and identified TDS, Cl-, NH4+, Fe and Mn concentrations as the main indicators of groundwater pollution caused by landfill leachate percolation.
Journal ArticleDOI
Mg, Ca and O18O16 exchange in the sediment-pore water system, hole 149, DSDP
TL;DR: In this paper, the pore waters of Hole 149 (DSDP) exhibit a strong depletion in Mg and a corresponding enrichment in Ca, while the alkalinity remains relatively constant.
Journal ArticleDOI
Ice-vapor equilibrium fractionation factor of hydrogen and oxygen isotopes: experimental investigations and implications for stable water isotope studies.
M. D. Ellehoj,Hans Christian Steen-Larsen,Hans Christian Steen-Larsen,Sigfus J Johnsen,Morten Madsen +4 more
TL;DR: Using the new values for α, a Rayleigh distillation model shows significant changes in both magnitude and shape of an annual deuterium excess signal in Greenland.
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.