Results 11 to 20 of about 2,285,311 (372)
Evolution of ancient hydrothermal fluids theoretically inverted with initial oxygen isotopes of water [PDF]
Scientific ReportsWhile great successes have been achieved during past decades, oxygen isotopic endmembers of water were implicitly adopted by previous studies for quantifying fossil hydrothermal systems worldwide.
Chun-Sheng Wei, Zi-Fu Zhao
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A Critical Look at the Combined Use of Sulfur and Oxygen Isotopes to Study Microbial Metabolisms in Methane-Rich Environments [PDF]
Frontiers in Microbiology, 2018 Separating the contributions of anaerobic oxidation of methane and organoclastic sulfate reduction in the overall sedimentary sulfur cycle of marine sediments has benefited from advances in isotope biogeochemistry.
Gilad Antler +3 more
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Ab Initio Calculations of Even Oxygen Isotopes with Chiral Two- Plus Three-Nucleon Interactions [PDF]
Physical Review Letters, 2013 We formulate the In-Medium Similarity Renormalization Group (IM-SRG) for open-shell nuclei using a multi-reference formalism based on a generalized Wick theorem introduced in quantum chemistry.
Binder, S. +4 more
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Highly fractionated chromium isotopes in Mesoproterozoic-aged shales and atmospheric oxygen
Nature Communications, 2018 There is a long standing debate whether low atmospheric oxygen levels during the Mesoproterozoic Era hindered the evolution of crown-group animals. Here, the authors show with shale-hosted chromium isotopes that sufficient atmospheric oxygen for crown ...
Donald E. Canfield +7 more
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Mapping oxygen stable isotopes of precipitation in Italy
Journal of Hydrology: Regional Studies, 2016 Study region: Italy. Study focus: The oxygen isotope composition from 266 pluviometers was used to study the spatial variability of δ18O and its relationship with Italian orography. The local meteoric water lines (LMWLs) of northern, southern and central
Francesca Giustini +2 more
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Triple Oxygen Isotope Paleoaltimetry of Crystalline Rocks
Frontiers in Earth Science, 2021 Triple oxygen isotopes of hydrothermally altered minerals from crystalline rocks can be used to determine past elevations of mountain ranges. This method uses all three isotopes of oxygen (16O, 17O, and 18O) to create arrays that can be extrapolated back
C. Page Chamberlain +6 more
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Shiyou shiyan dizhi, 2023 As an important technological measure to uncover complex sedimentary-diagenetic process, microzone in situ geochemical analysis has drawn more and more attention along with improving analytical and test levels.
Jun HAN +4 more
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Presenting the Compendium Isotoporum Medii Aevi, a Multi-Isotope Database for Medieval Europe
Scientific Data, 2022 Measurement(s) Isotopes Technology Type(s) Mass Spectrometry Factor Type(s) Carbon isotopes • nitrogen isotopes • sulfur isotopes • oxygen isotopes • strontium isotopes Sample Characteristic - Organism Humans • Animals • Plants Sample Characteristic ...
Carlo Cocozza +4 more
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Data in Brief, 2021 Here we present derived thermal-hydrological variations data during the Marine isotope stages (MISs) 10–12 using surface and subsurface dwelling planktonic foraminiferal geochemical proxies of a sedimentary core of MD05-2925 (9.3oS, 151.5oE, water depth ...
Li Lo +5 more
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Isotopic Tracing of Perchlorate Sources in the Environment
Journal of Chemistry, 2021 Perchlorate (ClO4−) is an emerging persistent pollutant that is ubiquitous in the environment at trace concentrations. Perchlorate ingestion poses a risk to human health because it interferes with thyroidal hormone production.
Mengnan Zhang +6 more
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