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Ocean euxinia and climate change "double whammy" drove the Late Ordovician mass extinction

文献类型：期刊论文

作者Zou, Caineng1,2; Qiu, Zhen1,2; Poulton, Simon W.3; Dong, Dazhong1,2; Wang, Hongyan1,2; Chen, Daizhao4; Lu, Bin1,2; Shi, Zhensheng1,2; Tao, Huifei5
刊名GEOLOGY
出版日期2018-06-01
卷号46期号:6页码:535-538
ISSN号0091-7613
DOI10.1130/G40121.1
文献子类Article
英文摘要The Late Ordovician mass extinction (LOME, ca. 445 Ma) was the first of the "Big Five" Phanerozoic extinction events and comprised two extinction pulses. Proposed kill mechanisms include glacially induced global cooling and the expansion of water-column anoxia and/or euxinia (sulfidic conditions), but no general consensus has been reached with regard to the precise role of these mechanisms. A more definitive understanding is hampered by poorly constrained temporal links between the extinction pulses and climate change, and by uncertainty over the spatial distribution and intensity of euxinia. Here, we utilize Fe speciation and Mo concentrations, in addition to the chemical index of alteration weathering proxy, to reconstruct ocean redox conditions and climate change across a Late Ordovician to Early Silurian shelf-to-slope transect on the Yangtze Shelf Sea (a siliciclastic-dominated shelf basin in South China). These data show two cycles of expanded euxinia corresponding to the two pulses of the LOME, suggesting a strong causal relationship. Significantly, we show that intermittent or weak euxinia developed during the first extinction pulse, which likely accounts for the loss of benthic fauna and some planktonic organisms and nektonic groups. By contrast, the development of more intense euxinia throughout the water column during the second pulse likely drove survival fauna to extinction. Superimposed upon this, significant global cooling occurred across the first extinction phase, reflecting a secondary role in driving the extinction of certain low-latitude taxa.
WOS关键词REDOX CONDITIONS ; GLACIATION ; SPECIATION ; CHEMISTRY ; SEDIMENTS ; RECORD ; CARBON
WOS研究方向Geology
语种英语
WOS记录号WOS:000433513800017
出版者GEOLOGICAL SOC AMER, INC
资助机构National Key Basic Research Program of China(2014CB239000) ; National Key Basic Research Program of China(2014CB239000) ; National Natural Science Foundation of China(41602119) ; National Natural Science Foundation of China(41602119) ; Research Institute of Petroleum Exploration and Development (RIPED) Program(XN41603) ; Research Institute of Petroleum Exploration and Development (RIPED) Program(XN41603) ; Royal Society ; Royal Society ; National Key Basic Research Program of China(2014CB239000) ; National Key Basic Research Program of China(2014CB239000) ; National Natural Science Foundation of China(41602119) ; National Natural Science Foundation of China(41602119) ; Research Institute of Petroleum Exploration and Development (RIPED) Program(XN41603) ; Research Institute of Petroleum Exploration and Development (RIPED) Program(XN41603) ; Royal Society ; Royal Society ; National Key Basic Research Program of China(2014CB239000) ; National Key Basic Research Program of China(2014CB239000) ; National Natural Science Foundation of China(41602119) ; National Natural Science Foundation of China(41602119) ; Research Institute of Petroleum Exploration and Development (RIPED) Program(XN41603) ; Research Institute of Petroleum Exploration and Development (RIPED) Program(XN41603) ; Royal Society ; Royal Society ; National Key Basic Research Program of China(2014CB239000) ; National Key Basic Research Program of China(2014CB239000) ; National Natural Science Foundation of China(41602119) ; National Natural Science Foundation of China(41602119) ; Research Institute of Petroleum Exploration and Development (RIPED) Program(XN41603) ; Research Institute of Petroleum Exploration and Development (RIPED) Program(XN41603) ; Royal Society ; Royal Society
源URL[http://ir.iggcas.ac.cn/handle/132A11/88232]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Qiu, Zhen
作者单位1.China Natl Petr Corp, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
2.Natl Energy Shale Gas Res & Dev Expt Ctr, Langfang 065007, Peoples R China
3.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England
4.IGG CAS, Beijing 100029, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714		 Zou, Caineng,Qiu, Zhen,Poulton, Simon W.,et al. Ocean euxinia and climate change "double whammy" drove the Late Ordovician mass extinction[J]. GEOLOGY,2018,46(6):535-538.
APA Zou, Caineng.,Qiu, Zhen.,Poulton, Simon W..,Dong, Dazhong.,Wang, Hongyan.,...&Tao, Huifei.(2018).Ocean euxinia and climate change "double whammy" drove the Late Ordovician mass extinction.GEOLOGY,46(6),535-538.
MLA Zou, Caineng,et al."Ocean euxinia and climate change "double whammy" drove the Late Ordovician mass extinction".GEOLOGY 46.6(2018):535-538.

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来源：地质与地球物理研究所

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