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Global and regional controls on marine redox changes across the Ordovician-Silurian boundary in South China
Liu, Yu1,2,3; Li, Chao3; Algeo, Thomas J.3,4,5; Fan, Junxuan6; Peng, Ping'an1
2016-12-01
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume463Pages:180-191
AbstractThe Ordovician-Silurian (O-S) transition coincided with significant environmental and biological changes. In South China, the Yangtze Platform experienced both global and regional events at this time, including sea-level fluctuations, tectonic movements, volcanic eruptions, mass extinction, and widespread anoxia. The O-S transitional strata of the Yangtze Platform comprise organic-rich black shales that are an important oil source rock. To explore the evolution of watermass chemistry and its relationship to organic matter accumulation, we conducted an integrated Fe-S-C geochemical study (i.e., Fe-speciation, delta C-13(org),, delta S-34(py), pyrite-S and TOC) of the O-S boundary sections at Datianba (Chongqing Municipality) and Shuanghe (Sichuan Province). These sections were located in the restricted inner Yangtze Sea, in contrast to the previously studied Wangjiawan section, which was deposited in a more open setting of the outer Yangtze Sea. In contrast to the well-oxygenated conditions at Wangjiawan, the Datianba and Shuanghe sections record persistently anoxic, and episodically euxinic, conditions during the Hirnantian, which can be explained by the unique paleogeography and restricted hydrography of the inner Yangtze Sea. We propose that the regional Kwangsian Orogeny, which was driven by collision of the Yangtze and Cathaysia blocks, played a key role in basin development, watermass chemistry changes, and accumulation of Wufeng Formation black shales within the Yangtze Sea. The more widespread black shales of the Lower Silurian Lungmachi Formation were linked to the post-Hirnantian global marine transgression. (C) 2016 Elsevier B.V. All rights reserved.
KeywordYangtze Platform Kwangsian Orogeny Hirnantian glaciation Fe speciation Black shale Anoxia
DOI10.1016/j.palaeo.2016.10.006
Language英语
WOS KeywordORGANIC-CARBON PRESERVATION ; MASS EXTINCTION ; DEPOSITIONAL MODEL ; RICH SEDIMENTS ; BLACK SHALES ; HIRNANTIAN GLACIATION ; ENVIRONMENTAL-CHANGES ; KWANGSIAN OROGENY ; END-ORDOVICIAN ; YANGTZE BLOCK
Funding ProjectChinese 973 Program[2013CB955704] ; NSFC[41172030] ; NSFC[41321002] ; U.S. National Science Foundation Sedimentary Geology and Paleobiology Program[EAR-1053449] ; NASA Exobiology Program[NNX13AJ1IG] ; China University of Geosciences, Wuhan (SKL-GPMR)[GPMR201301] ; China University of Geosciences, Wuhan (SKL-BGEG)[BGL201407]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000387526000014
Funding OrganizationChinese 973 Program ; NSFC ; U.S. National Science Foundation Sedimentary Geology and Paleobiology Program ; NASA Exobiology Program ; China University of Geosciences, Wuhan (SKL-GPMR) ; China University of Geosciences, Wuhan (SKL-BGEG)
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/12335
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorLi, Chao
Affiliation1.Guangzhou Inst Geochem CAS, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
5.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA
6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yu,Li, Chao,Algeo, Thomas J.,et al. Global and regional controls on marine redox changes across the Ordovician-Silurian boundary in South China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2016,463:180-191.
APA Liu, Yu,Li, Chao,Algeo, Thomas J.,Fan, Junxuan,&Peng, Ping'an.(2016).Global and regional controls on marine redox changes across the Ordovician-Silurian boundary in South China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,463,180-191.
MLA Liu, Yu,et al."Global and regional controls on marine redox changes across the Ordovician-Silurian boundary in South China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 463(2016):180-191.
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