Results 1 to 10 of about 23,015 (142)

Unravelling early diagenesis: New insight from microscale minor sulfur isotopes [PDF]

Goldschmidt2021 abstracts, 2021
Poster ...
Virgil Pasquier, Marie‐Noëlle Decraene, Johanna Marin‐Carbonne, Christophe Thomazo, David A. Fike, Itay Halevy   +5 more
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Reconciling discrepant minor sulfur isotope records of the Great Oxidation Event [PDF]

Nature Communications, 2023
AbstractUnderstanding the timing and trajectory of atmospheric oxygenation remains fundamental to deciphering its causes and consequences. Given its origin in oxygen-free photochemistry, mass-independent sulfur isotope fractionation (S-MIF) is widely accepted as a geochemical fingerprint of an anoxic atmosphere.
Benjamin T. Uveges, Gareth Izon, Shuhei Ono, Nicolas J. Beukes, Roger E. Summons   +4 more
openalex   +4 more sources

Bulk and grain-scale minor sulfur isotope data reveal complexities in the dynamics of Earth’s oxygenation

Proceedings of the National Academy of Sciences, 2022
Significance The permanent disappearance of mass-independent sulfur isotope fractionation (S-MIF) from the sedimentary record has become a widely accepted proxy for atmospheric oxygenation. This framework, however, neglects inheritance from oxidative weathering of pre-existing S-MIF–bearing sedimentary sulfide minerals (i.e ...
Gareth Izon, Genming Luo, Benjamin T. Uveges, Nicolas J. Beukes, Kouki Kitajima, Shuhei Ono, John W. Valley, Xingyu Ma, Roger E. Summons   +8 more
openalex   +5 more sources

Novel sulfur isotope analyses constrain sulfurized porewater fluxes as a minor component of marine dissolved organic matter

Proceedings of the National Academy of Sciences, 2022
Marine dissolved organic matter (DOM) is a major reservoir that links global carbon, nitrogen, and phosphorus. DOM is also important for marine sulfur biogeochemistry as the largest water column reservoir of organic sulfur. Dissolved organic sulfur (DOS) can originate from phytoplankton-derived biomolecules in the surface ocean or from ...
Alexandra A. Phillips, Margot E. White, Michael Seidel, Fenfang Wu, Frank J. Pavia, Preston Kemeny, C. Audrey, Lihini I. Aluwihare, Thorsten Dittmar, Alex L. Sessions   +9 more
openalex   +6 more sources

The minor sulfur isotope composition of Cretaceous and Cenozoic seawater sulfate [PDF]

Paleoceanography, 2016
AbstractThe last 125 Myr capture major changes in the chemical composition of the ocean and associated geochemical and biogeochemical cycling. The sulfur isotopic composition of seawater sulfate, as proxied in marine barite, is one of the more perplexing geochemical records through this interval.
Andrew L. Masterson, Boswell A. Wing, Adina Paytan, James Farquhar, David T. Johnston   +4 more
openalex   +2 more sources

Major and Minor Elements and Sulfur Isotopes of the Mesozoic and Cenozoic Sediments at Sites 415 and 416, Leg 50, Deep Sea Drilling Project

, 1980
A.A. Midgisov, Yu.P. Girin, E.V. Galimov, V. A. Grinenko, N.V. Barskaya, V.A. Krivitsky, O. P. Sobornov, S.L. Scherkovsky   +7 more
openalex   +2 more sources

Data Report: Minor and Trace Element and Sulfur Isotopic Composition of Pore Waters from Sites 778 through 786

, 1992
Michael J. Mottl, Jeffrey C. Alt
openalex   +2 more sources

Metallogeny of the Dagangou Au-Ag-Cu-Sb Deposit in the Eastern Kunlun Orogen, NW China: Constraints from Ore-Forming Fluid Geochemistry and S-H-O Isotopes

Geofluids, 2021
A study of ore-forming fluid geochemistry and S-H-O isotopes has been conducted to reveal the metallogeny of the Dagangou Au-Ag-Cu-Sb deposit, NW China. Three mineralization stages are identified within Dagangou, including ankerite-quartz-pyrite (Ank-Qz ...
Liang Li, Haotian Liu, Changbing Wang, Fengyue Sun, Kai Zhang, Chengcheng You, Yonggang Sun, Shucheng Tan   +7 more
doaj   +1 more source

Geochronology, pyrite trace elements, and sulfur isotope geochemical characteristics of the Saibagou gold deposit in the eastern part of the northern Qaidam Basin

Frontiers in Earth Science, 2023
Introduction: The Saibagou gold deposit, located in the eastern part of the tectonic belt of the northern Qaidam Basin in western China, has its gold ore bodies strictly controlled by the regional fault system.
Jia Xing, Jianguo Wang, Jianbao Liu, Yanguang Liu, Kai Bian, Jianwei Liu, Lina Cai, Shengyun Wei   +7 more
doaj   +1 more source

Hg Isotopes and Enhanced Hg Concentration in the Meishan and Guryul Ravine Successions: Proxies for Volcanism Across the Permian-Triassic Boundary

Frontiers in Earth Science, 2021
High-resolution organic carbon isotope (δ13C), Hg concentration and Hg isotopes curves are presented for the Permian-Triassic boundary (PTB) sections at Guryul Ravine (India) and Meishan D (China).
Alcides Nóbrega Sial, Jiubin Chen, Christoph Korte, Manoj Kumar Pandit, Jorge E. Spangenberg, Juan Carlos Silva-Tamayo, Luiz Drude de Lacerda, Valderez Pinto Ferreira, José Antônio Barbosa, Claudio Gaucher, Natan Silva Pereira, Paulo Ricardo Riedel   +11 more
doaj   +1 more source