Transient marine euxinia at the end of the terminal Cryogenian glaciation

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dc.contributor.authorLang, Xianguoen
dc.contributor.authorShen, Bingen
dc.contributor.authorPeng, Yongboen
dc.contributor.authorXiao, Shuhaien
dc.contributor.authorZhou, Chuanmingen
dc.contributor.authorBao, Huimingen
dc.contributor.authorKaufman, Alan J.en
dc.contributor.authorHuang, Kangjunen
dc.contributor.authorCrockford, Peter W.en
dc.contributor.authorLiu, Yonggangen
dc.contributor.authorTang, Wenboen
dc.contributor.authorMa, Haoranen
dc.contributor.departmentGeosciencesen
dc.date.accessioned2019-02-07T14:44:22Zen
dc.date.available2019-02-07T14:44:22Zen
dc.date.issued2018-08-01en
dc.description.abstractTermination of the terminal Cryogenian Marinoan snowball Earth glaciation (similar to 650-635 Ma) is associated with the worldwide deposition of a cap carbonate. Modeling studies suggest that, during and immediately following deglaciation, the ocean may have experienced a rapid rise in pH and physical stratification followed by oceanic overturn. Testing these predictions requires the establishment of a high-resolution sequence of events within sedimentary records. Here we report the conspicuous occurrence of pyrite concretions in the topmost Nantuo Formation ( South China) that was deposited in the Marinoan glacial deposits. Sedimentary facies and sulfur isotope data indicate pyrite precipitation in the sediments with H2S diffusing from the overlying sulfidic/euxinic seawater and Fe (II) from diamictite sediments. These observations suggest a transient but widespread presence of marine euxinia in an ocean characterized by redox stratification, high bioproductivity, and high-fluxes of sulfate from chemical weathering before the deposition of the cap carbonate.en
dc.description.notesThis study is supported by the Strategic Priority Research Program (B) of Chinese Academy of Sciences (Grant number XDB18000000), Natural Science Foundation of China (41322021) and State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Paleontology, CAS) (No. 183114). P.W.C. acknowledges funding from an NSERC PGS-D fellowship, and the Agouron Institute Postdoctoral Fellow Program.en
dc.description.sponsorshipStrategic Priority Research Program (B) of Chinese Academy of Sciences [XDB18000000]en
dc.description.sponsorshipNatural Science Foundation of China [41322021]en
dc.description.sponsorshipState Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Paleontology, CAS) [183114]en
dc.description.sponsorshipNSERC PGS-D fellowshipen
dc.description.sponsorshipAgouron Institute Postdoctoral Fellow Programen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/s41467-018-05423-xen
dc.identifier.issn2041-1723en
dc.identifier.other3019en
dc.identifier.pmid30068999en
dc.identifier.urihttp://hdl.handle.net/10919/87522en
dc.identifier.volume9en
dc.language.isoen_USen
dc.publisherSpringer Natureen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleTransient marine euxinia at the end of the terminal Cryogenian glaciationen
dc.title.serialNature Communicationsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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