CONODONT SUCCESSION AROUND THE PERMIAN-TRIASSIC BOUNDARY AT THE HUANGZHISHAN SECTIoN,ZHEJIANG AND ITS STRATIGRAPHIC CORRELATION
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Abstract:
Conodonts from the Permian-Triassic boundary beds at the Huangzhishan Section, Zhejiang are systematically studied for the first time, with a total of 16 species assigned to 2 genera. On the basis of the ranges of identified species, five conodont zones are recognized in ascending order as follows: the Clarkina changxingensis changxingensis Zone, the C. parasubcarinata Zone, the C. changxingensis yini-C. meishanensis zhangi Zone, the C. meishanensis meishanensis Zone, and the Hindeodus parvus Zone. The successive occurrences of Hindeodus changxingensis in Bed 15, Hindeodus eurypyge in the lower part of Bed 18 and Hindeodus parvus in the middle part of Bed 18 serve as proxies for defining the Permian-Triassic boundary at the base of Bed 18-3 in the Huangzhishan Section. Correlations with the stratotype Meishan Section, Zhejiang and sections in Iran are also discussed in terms of conodonts.
