Journal ArticleDOI
Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide
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TLDR
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.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1957-01-01. It has received 4071 citations till now. The article focuses on the topics: Carbon & Carbon dioxide.read more
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Quantifying dietary macronutrient sources of carbon for bone collagen biosynthesis using natural abundance stable carbon isotope analysis.
TL;DR: Essential and conditionally indispensable amino acids were shown to be routed from diet to collagen with little isotopic fractionation whereas non-essential amino acids differed by up to 20 per thousand, defining the minimum amount of dietary carbon routing.
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The oxygen and carbon isotope distribution in the Mediterranean water masses
TL;DR: In this paper, the authors measured the oxygen and carbon stable isotope compositions of the present-day Mediterranean waters in order to evaluate their variability, which is related to the specific climatic and hydrological conditions within the basin.
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Oxygen isotope study of a Precambrian banded iron-formation, Hamersley Range, Western Australia
TL;DR: Oxygen isotope ratios were determined for quartz, magnetite, ankerite, siderite, riebeckite, hematite and talc in samples of banded iron-formation from the Dales Gorge Member of the Brockman Iron Formation.
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Carbon and nitrogen stable isotopes of meiobenthos and their food resources
TL;DR: Populations of meiofauna assimilate a mixture of food resources, however, detrital Spartina may be the predominant source of carbon with micro-algae contributing some portion of the assimilated carbon and nitrogen.
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Dual modes of the carbon cycle since the Last Glacial Maximum
TL;DR: The global carbon cycle is shown to have operated in two distinct primary modes on the timescale of thousands of years, one when climate was changing relatively slowly and another when warming was rapid, each with a characteristic average stable-carbon-isotope composition of the net CO2 exchanged by the atmosphere with the land and oceans.
References
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On the Isotopic Chemistry of Carbonates and a Paleotemperature Scale
TL;DR: In this paper, the temperature variation of the fractionation of oxygen in exchange reactions between dissolved carbonate and water and between calcite and water was calculated on theoretical grounds, and checked experimentally.
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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.
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Revised carbonate-water isotopic temperature scale
TL;DR: The relationship between temperature and O(18) content relative to that for a Cretaceous belemnite of the Pee Dee formation previously reported (Epstein, Buchsbaum, Lowenstam, and Urey, 1951) has been re-determined using modified procedures for removing organic matter from shells, and is found to be 16.5 - 4.3 δ + 0.14 δ^2
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The geochemistry of the stable carbon isotopes
TL;DR: A survey of the variation of the ratio C13/C12 in nature can be found in this paper, where Urey and his co-workers used two complete feed systems with magnetic switching to determine small differences in isotope ratios between samples and a standard gas.