Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?

doi:10.1016/j.lithos.2014.05.011

	Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?
	He, Bin 1; Zhong, Yu-Ting 1,2; Xu, Yi-Gang 1; Li, Xian-Hua 3
刊名	LITHOS
	2014-09-01
卷号	204 页码:258-267
关键词	Permo-Triassic boundary Mass extinction The Siberian Traps Volcanic ash Ignimbrite flare-up South China
ISSN号	0024-4937
DOI	10.1016/j.lithos.2014.05.011
文献子类	Article
英文摘要	Assessment of the synchroneity between the Siberian Traps and the Permo-Triassic boundary (PTB) mass extinction has led to the proposition that the Siberian flood volcanism was responsible for the severest biotic crisis in the Phanerozoic. However, recent studies suggest that the Siberian Traps may have postdated the main extinction horizon. In this paper, we demonstrate, using stratigraphy, a time and intensity coincidence between PTB volcanic ash and the main extinction horizon. Geochemistry of the FIB volcanic ashes in five sections in South China indicates that they were derived from continental magmatic arc. Zircons extracted from the PTB volcanic ashes have negative epsilon(Hf(t)) (12.9 to 2.0) and delta O-18 (6.8 to 10.9%.), consistent with an acidic volcanism and a crustal-derived origin, and therefore exclude a genetic link between the PTB mass extinction and the Siberian Traps. On the basis of spatial variation in the number of the PTB volcanic ash layers and the thickness of the ash layers in South China, we propose that the PTB volcanic ash may be related to Paleo-Tethys continental arc magmatism in the Kunlun area. Ignimbrite flare-up related to rapid plate subduction during the final assemblage of the Pangea super-continent may have generated a volcanic winter, which eventually triggered the collapse of ecosystem and ultimately mass extinction at the end of the Permian. The Siberian Traps may have been responsible for a greenhouse effect and so have been responsible for both a second pulse of the extinction event and Early Triassic ecological evolution. (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词	GLOBAL STRATOTYPE SECTION ; BIOTIC CRISIS ; 2 EPISODES ; ZIRCON ; EVENT ; END ; VOLCANISM ; AGE ; BIOSTRATIGRAPHY ; GEOCHRONOLOGY
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000342260400020
资助机构	National Basic Research Program of China(2011CB808906 ; National Basic Research Program of China(2011CB808906 ; National Natural Science Foundation of China(40721063 ; National Natural Science Foundation of China(40721063 ; GIGCAS 135 project(Y234051001) ; GIGCAS 135 project(Y234051001) ; 2011CB808905) ; 2011CB808905) ; 41073045 ; 41073045 ; 41273011) ; 41273011) ; National Basic Research Program of China(2011CB808906 ; National Basic Research Program of China(2011CB808906 ; National Natural Science Foundation of China(40721063 ; National Natural Science Foundation of China(40721063 ; GIGCAS 135 project(Y234051001) ; GIGCAS 135 project(Y234051001) ; 2011CB808905) ; 2011CB808905) ; 41073045 ; 41073045 ; 41273011) ; 41273011) ; National Basic Research Program of China(2011CB808906 ; National Basic Research Program of China(2011CB808906 ; National Natural Science Foundation of China(40721063 ; National Natural Science Foundation of China(40721063 ; GIGCAS 135 project(Y234051001) ; GIGCAS 135 project(Y234051001) ; 2011CB808905) ; 2011CB808905) ; 41073045 ; 41073045 ; 41273011) ; 41273011) ; National Basic Research Program of China(2011CB808906 ; National Basic Research Program of China(2011CB808906 ; National Natural Science Foundation of China(40721063 ; National Natural Science Foundation of China(40721063 ; GIGCAS 135 project(Y234051001) ; GIGCAS 135 project(Y234051001) ; 2011CB808905) ; 2011CB808905) ; 41073045 ; 41073045 ; 41273011) ; 41273011)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86033]
专题	中国科学院地质与地球物理研究所
通讯作者	Xu, Yi-Gang
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	He, Bin,Zhong, Yu-Ting,Xu, Yi-Gang,et al. Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?[J]. LITHOS,2014,204:258-267.
APA	He, Bin,Zhong, Yu-Ting,Xu, Yi-Gang,&Li, Xian-Hua.(2014).Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?.LITHOS,204,258-267.
MLA	He, Bin,et al."Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?".LITHOS 204(2014):258-267.