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Predominance of stratified anoxic Yangtze Sea interrupted by short-term oxygenation during the Ordo-Silurian transition

文献类型：期刊论文

作者Yan, Detian1,2; Chen, Daizhao1; Wang, Qingchen1; Wang, Jianguo1
刊名CHEMICAL GEOLOGY
出版日期2012-01-06
卷号291页码:69-78
关键词Oceanic anoxia Organic accumulation Mass extinctions Ordovician-Silurian transition Yangtze Sea
ISSN号0009-2541
DOI10.1016/j.chemgeo.2011.09.015
文献子类Article
英文摘要The Ordo-Silurian transition was a critical interval in geological history, during which profound biotic, climatic and oceanic changes occurred. In order to explore the oceanic palaeoredox changes, multiple geochemical proxies, including ratios of S/C, FeHR/FeT, FeP/FeHR and DOP values, are presented here from three sections (Wangjiawan, western Hubei, Sanjiaguan, northern Hunan, and Nanbazi, northern Guizhou) across the Ordo-Silurian boundary on the Yangtze Platform. These palaeoredox data indicate a predominance of stratified, anoxic (ferruginous) ocean on the Yangtze block during this transition, which was interrupted by a brief episode of oceanic oxygenation in the early Hirnantian. This oxygenation, temporally coinciding with the end-Ordovician glaciation and global glacio-eustatic sea level fall, likely resulted from enhanced circulation of polar cold, dense oxygen-rich water onto the low-latitude shelf. The prior and subsequent longer-term episodes of anoxic ocean, particularly the later one which started in the late Hirnantian, occurred in parallel with the rapid climatic warming and sea level rise, which could have slowed down oceanic circulation, thereby enhancing oceanic stratification, anoxia and organic preservation. Oceanic redox changes, together with rapid climatic and sea-level fluctuations, were likely responsible for the stepwise massive demise of the Ordo-Silurian biotic crisis. (C) 2011 Elsevier B.V. All rights reserved.
WOS关键词SEDIMENTARY PYRITE FORMATION ; SOUTH CHINA ; LATE ORDOVICIAN ; LATEST ORDOVICIAN ; HIRNANTIAN GLACIATION ; SULFUR RELATIONSHIPS ; MARINE-SEDIMENTS ; ORGANIC-CARBON ; BLACK-SEA ; IRON
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000300202300006
出版者ELSEVIER SCIENCE BV
资助机构National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; 40903032) ; 40903032) ; 40903032) ; 40903032) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; 40903032) ; 40903032) ; 40903032) ; 40903032) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; 40903032) ; 40903032) ; 40903032) ; 40903032) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Key Basic Research Project(2005CB422101) ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; National Science Foundation of China(40839907 ; 40903032) ; 40903032) ; 40903032) ; 40903032)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84158]  
专题中国科学院地质与地球物理研究所
通讯作者Chen, Daizhao
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Detian,Chen, Daizhao,Wang, Qingchen,et al. Predominance of stratified anoxic Yangtze Sea interrupted by short-term oxygenation during the Ordo-Silurian transition[J]. CHEMICAL GEOLOGY,2012,291:69-78.
APA Yan, Detian,Chen, Daizhao,Wang, Qingchen,&Wang, Jianguo.(2012).Predominance of stratified anoxic Yangtze Sea interrupted by short-term oxygenation during the Ordo-Silurian transition.CHEMICAL GEOLOGY,291,69-78.
MLA Yan, Detian,et al."Predominance of stratified anoxic Yangtze Sea interrupted by short-term oxygenation during the Ordo-Silurian transition".CHEMICAL GEOLOGY 291(2012):69-78.

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来源：地质与地球物理研究所

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