浙江长兴地区二叠系与三叠系界线层型研究

<正> 中国南部二叠系与三叠系分界的层型剖面位于浙江长兴煤山(赵金科、盛金章等,1980)。在这个剖面上,1978年赵金科等把上二叠统的顶界确定在“未定名菊石带”,后经重新研究,又改归于下三叠统底部(赵金科、盛金章等,1980)。1980年5月,我们再度去上述界线层型剖面工作,在“未定名菊石带”同一层位详细采集化石,并到邻区安徽广德独山、江苏宜兴湖汷等地的相当层位调查,进一步证实在界线层型剖面上的“未定名菊石带”

A research in the Permian-Triassic boundary stratotype from Changxing area, Zhe- jiang

The best known and most appropriate section for consideration as Permian-Triassic boundary stra-totype occurs in the Meishan of Changxing, Zhejiang where a continuous sequence including the earliest Triassic (Hypophiceras-bearing beds) and the uppermost Permian Changhsingian is described in detail. The exact Permian-Triassic boundary is drawn at the base of Hypophiceras-bearing beds.