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Large perturbations of the carbon and sulfur cycle associated with the Late Ordovician mass extinction in South China
Zhang, Tonggang1; Shen, Yanan1; Zhan, Renbin (詹仁斌)2; Shen, Shuzhong (沈树忠)2; Chen, Xu (陈旭)2
2009-04-01
Source PublicationGEOLOGY
ISSN0091-7613
Volume37Issue:4Pages:299-302
Abstract

High-resolution delta(13)C data of organic carbon from a continuous section of the Late Ordovician-Early Silurian reveal two positive delta(13)C excursions that are associated with the mass extinction in South China. The first stratigraphic delta(34)S 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 delta(34)S values of pyrites and a large, short-lived negative delta(34)S excursion of similar to 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.

DOI10.1130/G25477A.1
Language英语
WOS KeywordGlobal Correlation ; Isotope Stratigraphy ; Silurian Boundary ; Glaciation ; Uppermost ; Platform ; Basin ; Time ; Sea
Funding ProjectNatural Sciences and Engineering Research Council of Canada (NSERC) ; National Natural Science Foundation of China[40503002] ; National Natural Science Foundation of China[40528004]
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000264753700003
Funding OrganizationNatural Sciences and Engineering Research Council of Canada (NSERC) ; National Natural Science Foundation of China
PublisherGEOLOGICAL SOC AMER, INC
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Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/232
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorZhang, Tonggang
Affiliation1.Univ Quebec, Canada Res Chairs Program Biogeochem, Montreal, PQ H3C 3P8, Canada
2.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 21008, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Tonggang,Shen, Yanan,Zhan, Renbin ,et al. Large perturbations of the carbon and sulfur cycle associated with the Late Ordovician mass extinction in South China[J]. GEOLOGY,2009,37(4):299-302.
APA Zhang, Tonggang,Shen, Yanan,Zhan, Renbin ,Shen, Shuzhong ,&Chen, Xu .(2009).Large perturbations of the carbon and sulfur cycle associated with the Late Ordovician mass extinction in South China.GEOLOGY,37(4),299-302.
MLA Zhang, Tonggang,et al."Large perturbations of the carbon and sulfur cycle associated with the Late Ordovician mass extinction in South China".GEOLOGY 37.4(2009):299-302.
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