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Episodic euxinia in the Changhsingian (late Permian) of South China: Evidence from framboidal pyrite and geochemical data

文献类型：期刊论文

作者Wei, Hengye1,2; Algeo, Thomas J.2; Yu, Hao3; Wang, Jiangguo3; Guo, Chuan3; Shi, Guo1
刊名SEDIMENTARY GEOLOGY
出版日期2015-04-15
卷号319页码:78-97
关键词Trace Metals Organic Carbon Isotopes Sulfur Isotopes Redox Proxies Mass Extinction Permian-triassic Boundary
DOI10.1016/j.sedgeo.2014.11.008
文献子类Article
英文摘要A multiproxy study of a new Upper Permian-Lower Triassic section (Xiaojiaba) in Sichuan Province, China, documents large changes in marine productivity, redox conditions and detrital input prior to the latest Permian mass extinction. Marine productivity, as proxied by total organic carbon content (TOC), biogenic SiO2, and excess barium, displays a long-term decline through most of the Changhsingian stage (late late Permian), culminating in very low values around the Permian-Triassic boundary. Concurrently, redox proxies including pyrite framboid, delta S-34(py), MOauth and U-auth and C-org/P document a shift from suboxic to dysoxic/oxic conditions that was interrupted by several episodes of benthic euxinia, and detrital siliciclastic proxies (Al, Hf, Nb, and REEs) suggest an increased flux of weathered material from land areas. The long-term changes in productivity, redox conditions, and terrigenous detrital fluxes were probably caused by a regional sea-level fall across the South China Craton. On the other hand, the brief euxinic episodes occurring during the late Permian had oceanographic causes, probably related to the transient upward expansion of the chemocline at the top of the oceanic oxygen-minimum zone. These euxinic episodes may have been harbingers of the more widespread anoxia that developed concurrently with the latest Permian mass extinction and that may have played a major role in triggering the largest biotic crisis of the Phanerozoic. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词RARE-EARTH-ELEMENTS ; TRIASSIC MASS EXTINCTION ; WATER-COLUMN ANOXIA ; MARINE-SEDIMENTS ; REDOX CONDITIONS ; OCEANIC ANOXIA ; HYDROTHERMAL FLUIDS ; EQUATORIAL PACIFIC ; PANTHALASSIC OCEAN ; CONTINENTAL-SHELF
WOS研究方向Geology
语种英语
WOS记录号WOS:000351795400007
资助机构National Natural Science Foundation of China (NSFC)(41302021 ; National Natural Science Foundation of China (NSFC)(41302021 ; Jiangxi Province Education Project(GJJ13453) ; Jiangxi Province Education Project(GJJ13453) ; Sedimentary Geology and Paleobiology program of the U.S. National Science Foundation ; Sedimentary Geology and Paleobiology program of the U.S. National Science Foundation ; NASA Exobiology program ; NASA Exobiology program ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan(GPMR201301) ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan(GPMR201301) ; U.S. National Science Foundation ; U.S. National Science Foundation ; State Key Laboratory of Geological Processes and Mineral Resources at the China University of Geosciences-Wuhan(GPMR201301) ; State Key Laboratory of Geological Processes and Mineral Resources at the China University of Geosciences-Wuhan(GPMR201301) ; IGCP Projects(572 ; IGCP Projects(572 ; 41203030 ; 41203030 ; 630) ; 630) ; 41002007) ; 41002007) ; National Natural Science Foundation of China (NSFC)(41302021 ; National Natural Science Foundation of China (NSFC)(41302021 ; Jiangxi Province Education Project(GJJ13453) ; Jiangxi Province Education Project(GJJ13453) ; Sedimentary Geology and Paleobiology program of the U.S. National Science Foundation ; Sedimentary Geology and Paleobiology program of the U.S. National Science Foundation ; NASA Exobiology program ; NASA Exobiology program ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan(GPMR201301) ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan(GPMR201301) ; U.S. National Science Foundation ; U.S. National Science Foundation ; State Key Laboratory of Geological Processes and Mineral Resources at the China University of Geosciences-Wuhan(GPMR201301) ; State Key Laboratory of Geological Processes and Mineral Resources at the China University of Geosciences-Wuhan(GPMR201301) ; IGCP Projects(572 ; IGCP Projects(572 ; 41203030 ; 41203030 ; 630) ; 630) ; 41002007) ; 41002007)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62577]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
作者单位1.E China Inst Technol, Coll Earth Sci, Nanchang 330013, Jiangxi, Peoples R China
2.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Hengye,Algeo, Thomas J.,Yu, Hao,et al. Episodic euxinia in the Changhsingian (late Permian) of South China: Evidence from framboidal pyrite and geochemical data[J]. SEDIMENTARY GEOLOGY,2015,319:78-97.
APA Wei, Hengye,Algeo, Thomas J.,Yu, Hao,Wang, Jiangguo,Guo, Chuan,&Shi, Guo.(2015).Episodic euxinia in the Changhsingian (late Permian) of South China: Evidence from framboidal pyrite and geochemical data.SEDIMENTARY GEOLOGY,319,78-97.
MLA Wei, Hengye,et al."Episodic euxinia in the Changhsingian (late Permian) of South China: Evidence from framboidal pyrite and geochemical data".SEDIMENTARY GEOLOGY 319(2015):78-97.

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来源：地质与地球物理研究所

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