Conodont biostratigraphy across the Permian-Triassic boundary at the Dawen section, Great Bank of Guizhou, Guizhou Province, South China: Implications for the Late Permian extinction and correlation with Meishan

doi:10.1016/j.jseaes.2008.08.002

	Conodont biostratigraphy across the Permian-Triassic boundary at the Dawen section, Great Bank of Guizhou, Guizhou Province, South China: Implications for the Late Permian extinction and correlation with Meishan
	Chen, Jun 1,2; Beatty, Tyler W.1; Henderson, Charles A.1; Rowe, Harry 3
	2009-11-02
发表期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
卷号	36 期号:6 页码:442-458
摘要	Several continuous Permian-Triassic boundary (PTB) sections are well exposed in the interior of the Great Bank of Guizhou (GBG) on the east limb of the Bianyang syncline, Luodian County, Guizhou Province. South China. Fourteen conodont taxa are identified, including Clarkina kazi, Clarkina lehrmanni n. sp., Clarkina taylorae, Clarkina zhejiangensis, Hindeodus eurypyge, Hindeodus inflatus, Hindeodus sxlatidentatus, Hindeodus parvus erectus, Hindeodus parvus parvus, Hindeodus postparvus, Hindeodus praeparvus, Hindeodus typicalis, Isarcicella staeschei, and Merrillina ultima based on a detailed study of the Permian-Triassic interval at the Dawen section. The first occurrence (FO) of H. parvus parvus in the lower Daye Formation, at about 7.45 m above the contact surface between the Upper Permian skeletal packstone and a calcimicrobial framestone unit, is correlated with the Permian-Triassic boundary; the occurrence of H. eurypyge, H. praeparvus and M. ultima immediately below and H. postparvus above the interval supports this interpretation. A morphometric analysis of 31 Hindeodus specimens helped distinguish H. parvus erectus from H. parvus parvus and H. postparvus. Correlation with the Meishan section (PTB GSSP) using both conodont biostratigraphy and carbon isotopes, indicates that the major extinction at the two localities is simultaneous and coincides with the top of the skeletal packstone at Dawen. The contact between the skeletal packstone and the calcimicrobialite is very irregular and has previously been interpreted as a dissolution surface and correlated with a surface in the lower part of bed 27 at Meishan. Our results confirm this interpretation and reveal that the dissolution event postdated the extinction. (C) 2008 Elsevier Ltd. All rights reserved.
关键词	Conodonts Permian-Triassic boundary Late Permian extinction Dawen section Great Bank of Guizhou South China
DOI	10.1016/j.jseaes.2008.08.002
语种	英语
关键词[WOS]	GLOBAL STRATOTYPE SECTION ; MARINE CARBONATE PLATFORMS ; NANPANJIANG BASIN ; MASS EXTINCTION ; ZHEJIANG PROVINCE ; BIOTIC CRISIS ; ZONATION ; POINT ; STRATIGRAPHY ; EVOLUTION
资助项目	NSERC ; University of Calgary Graduate Students Association ; Province of Alberta ; Nanjing Institute of Geology and Palaeontology ; MST[2006 CB806400] ; NSFC
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000271356400005
项目资助者	NSERC ; University of Calgary Graduate Students Association ; Province of Alberta ; Nanjing Institute of Geology and Palaeontology ; MST ; NSFC
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/239
专题	中国科学院南京地质古生物研究所
通讯作者	Henderson, Charles A.
作者单位	1.Univ Calgary, Dept Geosci, Nw Calgary, AB T2N 1N4, Canada 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 3.Univ Kentucky, Dept Geol Sci, Lexington, KY 40506 USA
第一作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Chen, Jun,Beatty, Tyler W.,Henderson, Charles A.,et al. Conodont biostratigraphy across the Permian-Triassic boundary at the Dawen section, Great Bank of Guizhou, Guizhou Province, South China: Implications for the Late Permian extinction and correlation with Meishan[J]. JOURNAL OF ASIAN EARTH SCIENCES,2009,36(6):442-458.
APA	Chen, Jun,Beatty, Tyler W.,Henderson, Charles A.,&Rowe, Harry.(2009).Conodont biostratigraphy across the Permian-Triassic boundary at the Dawen section, Great Bank of Guizhou, Guizhou Province, South China: Implications for the Late Permian extinction and correlation with Meishan.JOURNAL OF ASIAN EARTH SCIENCES,36(6),442-458.
MLA	Chen, Jun,et al."Conodont biostratigraphy across the Permian-Triassic boundary at the Dawen section, Great Bank of Guizhou, Guizhou Province, South China: Implications for the Late Permian extinction and correlation with Meishan".JOURNAL OF ASIAN EARTH SCIENCES 36.6(2009):442-458.