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Carbon and sulfur isotopic fluctuations associated with the end-Guadalupian mass extinction in South China

文献类型：期刊论文

作者Yan Detian1,2; Zhang Liqin3; Qiu Zhen2
刊名GONDWANA RESEARCH
出版日期2013-11-01
卷号24期号:3-4页码:1276-1282
关键词Stable isotopes Mass extinctions End-Guadalupian South China
ISSN号1342-937X
DOI10.1016/j.gr.2013.02.008
文献子类Article
英文摘要Concentrations of total organic matter (TOC), carbon isotopic compositions of carbonate and organic matter (delta C-13(carb), delta C-13(org)), and sulfur isotopic compositions of carbonate associated sulfate (delta S-34(sulfate)) across the Guadalupian-Lopingian (G-L) boundary were analyzed from identical samples of Tieqiao section, Laibin, Guangxi province, South China. The delta C-13(carb) values show a positive excursion from -0.45 parts per thousand to the peak of 3.80 parts per thousand in the Laibin limestone member of the Maokou Formation, followed by a drastic drop to -2.60 parts per thousand in the lowest Heshan formation, then returned to about 1.58 parts per thousand. Similar to the trends of the delta C-13(carb), values, Delta C-13(carb-org) values also show a positive excursion followed by a sharp negative shift. The onset of a major negative carbon isotope excursion postdates the end Guadalupian extinction that indicates subsequent severe disturbance of the ocean-atmosphere carbon cycle. The first biostratigraphic delta S-34(sulfate) values during the G-L transition exhibit a remarkable fluctuation: a dramatic negative shift followed by a rapid positive shift, ranging from -36.88 parts per thousand to -37.41 parts per thousand. These sulfate isotopic records suggest that the ocean during the G-L transition was strongly stratified, forming an unstable chemocline separating oxic shallow water from anoxic/euxinic deep water. Chemocline excursions, together with subsequent rapid transgression and oceanic anoxia, were likely responsible for the massive diversity decline of the G-L biotic crisis. (C) 2013 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词SEA-LEVEL CHANGES ; TRACE-ELEMENT ; BOUNDARY ; EXCURSIONS ; DIAGENESIS ; EVOLUTION ; RELEASE ; SULFATE ; SECTION ; RECORD
WOS研究方向Geology
语种英语
WOS记录号WOS:000325233900029
出版者ELSEVIER SCIENCE BV
资助机构NSFC(41103018 ; NSFC(41103018 ; NSFC(41103018 ; NSFC(41103018 ; 41273001) ; 41273001) ; 41273001) ; 41273001) ; NSFC(41103018 ; NSFC(41103018 ; NSFC(41103018 ; NSFC(41103018 ; 41273001) ; 41273001) ; 41273001) ; 41273001) ; NSFC(41103018 ; NSFC(41103018 ; NSFC(41103018 ; NSFC(41103018 ; 41273001) ; 41273001) ; 41273001) ; 41273001) ; NSFC(41103018 ; NSFC(41103018 ; NSFC(41103018 ; NSFC(41103018 ; 41273001) ; 41273001) ; 41273001) ; 41273001)
源URL[http://ir.iggcas.ac.cn/handle/132A11/86686]  
专题中国科学院地质与地球物理研究所
通讯作者Yan Detian
作者单位1.China Univ Geosci, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Wuhan Univ, Minist Educ, Key Lab Geospace Environm & Geodesy, Wuhan 430079, Peoples R China
推荐引用方式
GB/T 7714		 Yan Detian,Zhang Liqin,Qiu Zhen. Carbon and sulfur isotopic fluctuations associated with the end-Guadalupian mass extinction in South China[J]. GONDWANA RESEARCH,2013,24(3-4):1276-1282.
APA Yan Detian,Zhang Liqin,&Qiu Zhen.(2013).Carbon and sulfur isotopic fluctuations associated with the end-Guadalupian mass extinction in South China.GONDWANA RESEARCH,24(3-4),1276-1282.
MLA Yan Detian,et al."Carbon and sulfur isotopic fluctuations associated with the end-Guadalupian mass extinction in South China".GONDWANA RESEARCH 24.3-4(2013):1276-1282.

入库方式： OAI收割

来源：地质与地球物理研究所

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