我国浙江长兴县煤山剖面已被确定为“全球二叠系-三叠系(P/T)界线层型剖面和点”,其相关的研究一直是地学界的热点。本次工作在煤山剖面A、B、C、D剖面的P/T界线附近的层位进行采样,其样品编号与地层对应关系如图1所示,A,B,C,D剖面的样品编号与地层对应关系类同;进行了X射线衍 The Meishan section of Changxing County, Zhejiang Province, China, has been identified as “Permian-Triassic (P / T) boundary line section and point”. The related researches have always been hot topics in geosciences. This work sampled the layers near the P / T boundary of sections A, B, C and D of the Meishan section, and the corresponding relationship between the sample number and the formation is shown in Figure 1. The sections A, B, C and D Correspondence between the number and the formation of the same type; carried out X-ray diffraction