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Large perturbations of the carbon and sulfur cycle associated with the Late Ordovician mass extinction in South China

2009; Geological Society of America; Volume: 37; Issue: 4 Linguagem: Inglês

10.1130/g25477a.1

1943-2682

Tonggang Zhang, Yanan Shen, Renbin Zhan, Shu‐zhong Shen, Xu Chen,

Geochemistry and Elemental Analysis

Research Article| April 01, 2009 Large perturbations of the carbon and sulfur cycle associated with the Late Ordovician mass extinction in South China Tonggang Zhang; Tonggang Zhang 1Canada Research Chairs Program in Biogeochemistry, University of Quebec at Montreal, Montreal, QC H3C 3P8, Canada Search for other works by this author on: GSW Google Scholar Yanan Shen; Yanan Shen * 1Canada Research Chairs Program in Biogeochemistry, University of Quebec at Montreal, Montreal, QC H3C 3P8, Canada *E-mail: shen.yanan@uqam.ca. Search for other works by this author on: GSW Google Scholar Renbin Zhan; Renbin Zhan 2State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 21008, China Search for other works by this author on: GSW Google Scholar Shuzhong Shen; Shuzhong Shen 2State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 21008, China Search for other works by this author on: GSW Google Scholar Xu Chen Xu Chen 2State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 21008, China Search for other works by this author on: GSW Google Scholar Author and Article Information Tonggang Zhang 1Canada Research Chairs Program in Biogeochemistry, University of Quebec at Montreal, Montreal, QC H3C 3P8, Canada Yanan Shen * 1Canada Research Chairs Program in Biogeochemistry, University of Quebec at Montreal, Montreal, QC H3C 3P8, Canada Renbin Zhan 2State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 21008, China Shuzhong Shen 2State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 21008, China Xu Chen 2State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 21008, China *E-mail: shen.yanan@uqam.ca. Publisher: Geological Society of America Received: 25 Aug 2008 Revision Received: 05 Nov 2008 Accepted: 09 Nov 2008 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2009 Geological Society of America Geology (2009) 37 (4): 299–302. https://doi.org/10.1130/G25477A.1 Article history Received: 25 Aug 2008 Revision Received: 05 Nov 2008 Accepted: 09 Nov 2008 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Tonggang Zhang, Yanan Shen, Renbin Zhan, Shuzhong Shen, Xu Chen; Large perturbations of the carbon and sulfur cycle associated with the Late Ordovician mass extinction in South China. Geology 2009;; 37 (4): 299–302. doi: https://doi.org/10.1130/G25477A.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract High-resolution δ13C data of organic carbon from a continuous section of the Late Ordovician–Early Silurian reveal two positive δ13C excursions that are associated with the mass extinction in South China. The first stratigraphic δ34S measurements on pyrite tied to well-established biostratigraphy indicate a large perturbation of the sulfur cycle, consistent with major sea-level changes related to the glaciation. The elevated δ34S values of pyrites and a large, short-lived negative δ34S excursion of ~20‰ associated with the decay of the glaciation suggest deep-water anoxia during the Hirnantian Stage, in contrast to the conventional view that the global oceans were oxygenated. We suggest that deep-water anoxia may have contributed to the Late Ordovician mass extinction in South China and possibly elsewhere. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.