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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Nontronite from a low-temperature hydrothermal system on the Juan de Fuca Ridge
TL;DR: A deposit of Fe-rich, Al-poor, hydrothermal nontronite was recovered from the Juan de Fuca Ridge as discussed by the authors, which is located near the tip of a propagating segment of the JFR.
Journal ArticleDOI
87Sr/86Sr and Sr/Ca in speleothems for paleoclimate reconstruction in Central China between 70 and 280 kyr ago
Hong-Chun Li,Teh-Lung Ku,Chen-Feng You,Hai Cheng,R. Lawrence Edwards,Zhi Bang Ma,Wang Sheng Tsai,Mung Dar Li +7 more
TL;DR: In this article, a two-member mass-balance model of concentration and isotopic composition of strontium in a cave system is used to estimate variation of the 87Sr/86Sr ratio in sediments overlying a limestone cave, showing that summer monsoons were more intense during interglacial periods than during glacial periods.
Journal ArticleDOI
Isotopic constraints on ice age fluids in active geothermal systems: Reykjanes, Iceland
E. C. Pope,Dennis K. Bird,Stefán Arnórsson,Thráinn Fridriksson,Wilfred A. Elders,Gudmundur O. Fridleifsson +5 more
TL;DR: In this paper, the authors constrain the origin of Reykjanes hydrothermal solutions by analysis of hydrogen and oxygen isotope compositions of Hydrothermal epidote from geothermal drillholes at depths between 1 and 3 km.
Journal ArticleDOI
Oxygen isotopic study of the Cretaceous granitic rocks in Japan
TL;DR: In this paper, the δ18O values of nine Cretaceous granitic rocks from the low P/T type regional metamorphic zone of Japan are +10.0 to +13.2
Journal ArticleDOI
A 10,000-year temperature record from Gotland, Sweden
Nils-Axel Mörner,Bill Wallin +1 more
TL;DR: In this paper, the sediment of Lake Tingstdade Trask, a shallow Chara-dominated lake onm the island of Gotland in the middle of the Baltic, was analyzed as to its 1*O and 13C content.
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.