Journal ArticleDOI
Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide
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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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Isotopic composition of methane released from wetlands: implications for the increase in atmospheric methane
TL;DR: In this paper, the mean delta C{sup 13} values for peat bogs and Alaskan tundra are reported, with a flux-weighted global average delta-C{sup13} value of {minus}59 + or{minus}6{per thousand} for methane released from wetlands, a major natural methane source.
Journal ArticleDOI
Food webs in forest and pasture streams in the Waikato region, New Zealand: A study based on analyses of stable isotopes of carbon and nitrogen, and fish gut contents
TL;DR: Stable isotopes of carbon (C) and nitrogen (N) were studied in 11 stream communities in the Waikato region of New Zealand, and food webs in the shaded, forest streams were clearly based on allochthonous material (conditioned leaf litter and terrestrial invertebrates).
Journal ArticleDOI
Carbon Isotope Fractionation during Anaerobic Biodegradation of Toluene: Implications for Intrinsic Bioremediation
TL;DR: The potential does exist to use compound-specific isotope analysis (CSIA), in conjunction with other methodologies, as a means of validating advanced stages of microbial transformation at field sites, because the accuracy and reproducibility associated with gas chromatograph−combustion−isotope ratio mass spectrometry (GC/C/IRMS) is low.
Journal ArticleDOI
Quantitative trait loci controlling water use efficiency and related traits in Quercus robur L.
Oliver Brendel,Didier Le Thiec,Caroline Scotti-Saintagne,Caroline Scotti-Saintagne,Catherine Bodénès,Antoine Kremer,Jean-Marc Guehl +6 more
TL;DR: A positive correlation using clonal means between δ13C and A/gw, as well as a co-localisation of QTL detected for both traits, can be seen as validation of the theoretical model linking the genetic architecture of these two traits.
Book ChapterDOI
Chlorite Authigenesis and Porosity Preservation in the Upper Cretaceous Marine Sandstones of the Santos Basin, Offshore Eastern Brazil
TL;DR: The main reservoirs in Santos Basin, eastern Brazilian margin, are Upper Cretaceous, marine turbidite and shelf sandstones that show porosity greater than 20% below 4000 m depth.
References
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Journal ArticleDOI
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.
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.
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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.