Recent achievements on the research of the Paleozoic-Mesozoic transitional period in South China |
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| Authors: | Yin Hongfu Feng Qinglai Xie Shucheng Yu Jianxin He Weihong Liang Handong Lai Xulong and Huang Xianyu |
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| Institution: | (1) Key Laboratory of Biogeology and Environmental Geology of 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;(3) State Key Laboratory of Coal Resources and Safety Mining, Beijing, 100083, China |
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| Abstract: | This is a review of research achievements on the Permian-Triassic transition in South China. It comprises of five parts: (1)
advances on the biostratigraphy and eventostratigraphy of the Meishan Section, the Global Stratotype Section and Point (GSSP)
of the Permian-Triassic boundary (PTB); (2) advances on the PTB research of deep water facies, especially the Dongpan Section
in Guangxi; (3) advances on the PTB research of terrestrial facies, especially the Chahe Section in Guizhou; (4) correlation
of the global change and biotic extinction between the PTB and modern times and its revelation to the status and future of
the earth and mankind; and (5) the pattern and causality of the Permian-Triassic extinction. In the last part, it is concluded
that the Permian-Triassic transitional interval constitutes a prolonged crisis period ranging from end-Guadalupian extinction
to the end of Early Triassic, totaling 14 Ma. The environmental crisis and mass extinction peaked at the PTB, which displayed
multiphase extinction rather than just one phase. Commencement of an extinctions prelude prior to the postulated bolide impact
implies that the causes of PTB extinction largely lie in the intrinsic developments of the earth, especially those related
with the integration of Pangea. |
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| Keywords: | Permian-Triassic transition South China protracted crisis multiphase extinctions |
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