Lower Triassic Smithian-Spathian Boundary at West Pingdingshan Section in Chaohu,Anhui Province

查看全文 作　　者：LIANG [1]Dan;TONG [1]JinNan;ZHAO [2]LaiShi

机构地区：[1]Key Laboratory of Biogeology and Environmental Geology of the Ministry of Education (China University of Geosciences), Wuhan 430074, China;[2]State Key Laboratory of Geological Processes and Mineral Resources (China University of Geosciences), Wuhan 430074, China

出　　处：《Science China Earth Sciences》索引2011年第54卷第3期,共8页

基　　金：supported by Ministry of Science and Technology (Grant No. 2006FY120300-11);National Natural Science Foundation of China (Grant Nos. 40830212, 40921062, 40972003) 摘　　要：The West Pingdingshan Section in Chaohu, Anhui Province, has been extensively studied in recent years and become one of the classic Lower Triassic sequences well-clarified in multiple stratigraphies. Also it is an important section that defines the Smithian-Spathian (S-S) boundary within the Olenekian Stage. The S-S boundary strata at the section are restudied in high-resolution conodont biostratigraphy and carbon isotopes. The refined S-S boundary defined by the FAD of conodont Neospathodus pingdingshanensis is at 30 cm above the base of Bed 52, corresponding to a rapid diversification of conodonts. A sharp positive shift of δ13Ccarb curve co-occurs at the S-S boundary and it can be used as a key reference to define the boundary. The defined S-S boundary position and carbon isotopes curve can be well correlated globally. 关键词：边界位置下三叠统山西组安徽省平顶巢湖碳同位素生物地层

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Lower Triassic Smithian-Spathian Boundary at West Pingdingshan Section in Chaohu,Anhui Province

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耦合文献(179)

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