globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12275
Scopus记录号: 2-s2.0-85041095268
论文题名:
Sulfur isotope's signal of nanopyrites enclosed in 2.7 Ga stromatolitic organic remains reveal microbial sulfate reduction
作者: Marin-Carbonne J.; Remusat L.; Sforna M.C.; Thomazo C.; Cartigny P.; Philippot P.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2018
卷: 16, 期:2
起始页码: 121
结束页码: 138
语种: 英语
英文关键词: Archean ; microbial sulfate reduction ; stromatolite ; sulfur biogeochemical cycle ; Tumbiana Formation
Scopus关键词: Archean ; biogeochemical cycle ; diagenesis ; metamorphism ; methane ; microbial activity ; microbial mat ; organic compound ; oxidation ; pyrite ; reduction ; sedimentary rock ; stromatolite ; sulfur cycle ; sulfur isotope ; Australia ; Western Australia
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: Microbial sulfate reduction (MSR) is thought to have operated very early on Earth and is often invoked to explain the occurrence of sedimentary sulfides in the rock record. Sedimentary sulfides can also form from sulfides produced abiotically during late diagenesis or metamorphism. As both biotic and abiotic processes contribute to the bulk of sedimentary sulfides, tracing back the original microbial signature from the earliest Earth record is challenging. We present in situ sulfur isotope data from nanopyrites occurring in carbonaceous remains lining the domical shape of stromatolite knobs of the 2.7-Gyr-old Tumbiana Formation (Western Australia). The analyzed nanopyrites show a large range of δ34S values of about 84‰ (from −33.7‰ to +50.4‰). The recognition that a large δ34S range of 80‰ is found in individual carbonaceous-rich layers support the interpretation that the nanopyrites were formed in microbial mats through MSR by a Rayleigh distillation process during early diagenesis. An active microbial cycling of sulfur during formation of the stromatolite may have facilitated the mixing of different sulfur pools (atmospheric and hydrothermal) and explain the weak mass independent signature (MIF-S) recorded in the Tumbiana Formation. These results confirm that MSR participated actively to the biogeochemical cycling of sulfur during the Neoarchean and support previous models suggesting anaerobic oxidation of methane using sulfate in the Tumbiana environment. © 2018 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85013
Appears in Collections:影响、适应和脆弱性

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作者单位: Institut de Physique du Globe - Sorbonne Paris Cité, CNRS, Université Paris Diderot, Paris Cedex 05, France; Univ Lyon- UJM St Etienne, Laboratoire Magmas et Volcans, UCA, CNRS, IRD, UMR 6524, Saint Etienne, France; Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie (IMPMC), UPMC, UMR CNRS 7590, UMR IRD 206, Sorbonne Universités - Muséum National d'Histoire Naturelle, Paris, France; Department of Geology, Palaeobiogeology-Palaeobotany-Palaeopalynology, University of Liège, Liège, Belgium; UMR CNRS/uB6282 Biogéosciences, UFR Sciences Vie Terre Environnement Université de Bourgogne Franche Comté, Dijon, France; Géosciences Montpellier, CNRS-UMR 5243, Université de Montpellier, Montpellier Cedex 5, France

Recommended Citation:
Marin-Carbonne J.,Remusat L.,Sforna M.C.,et al. Sulfur isotope's signal of nanopyrites enclosed in 2.7 Ga stromatolitic organic remains reveal microbial sulfate reduction[J]. Geobiology,2018-01-01,16(2)
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