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浙江长兴煤山的 D剖面经多年研究 ,已成为二叠系长兴阶的单位层型和二叠系 -三叠系全球界线层型 ,并被推荐为吴家坪阶 -长兴阶全球界线层型的候选剖面 ,因该剖面上龙潭组地层出露较少 ,以致国内对长兴组与龙潭组的接触关系存有不同意见 ,给层型剖面的建立带来不利影响。在清理和研究了 D剖面西侧 30 0 m处 C剖面的吴家坪阶 -长兴阶界线层段后 ,证实了煤山地区龙潭组与长兴组为整合接触 ,对相关化石的地层分布也获得进一步的认识
After years of research, the D section of Meishan, Changxing, Zhejiang Province has become a Permian Changxing Formation unitary and Permian-Triassic global boundary layer type and is recommended as a candidate for the Wujianping-Changxingian global boundary layer type Section. Because there are few strata in Longtan Formation in this section, there are different views on the contact relationship between Changxing Formation and Longtan Formation in China, which adversely affects the establishment of stratified profile. After cleaning up and studying the Wujiaping-Changxing boundary line at section C of 300 m west of section D, it was confirmed that the Longtan Formation and the Changxing Formation in the Meishan area are in conformity with the contact and the stratigraphic distribution of the related fossils is further understanding