贵州广顺二叠系化学地层的划分及沉积环境分析

本文以贵州省广顺二叠纪坝子头－茶叶剖面作了基准剖面，通过野外观察和室内岩相分析，根据岩石的成岩作用，颜色，微相特征及岩层的厚度和叠置关系，进行了层序的划分。在此基础上，以该剖面５９个岩层的１７个微量元素（Ａｓ，Ｂ，Ｂａ，Ｃｏ，Ｃｒ，Ｃｕ，Ｇａ，Ｍｎ，Ｍｏ，Ｎｉ，Ｐｂ，Ｓｎ，Ｓｒ，Ｔｉ，Ｖ，Ｚｎ和Ｚｒ）为变量，用因子分析和群分析进行了化学地层单元的划分，通过化学地层和层序地层划分结果的对比，结合化学

DIVISION OF PERMIAN CHEMICAL STRATA IN GUANGSHUN,GUIZHOU PROVINCE AND ANALYSIS OF SEDIMENTARY ENVIRONMENT

By taking the Batouzi-Chaye section of the Permian system in Guangshun, Guizhou Province as the base section, the stratigraphic division has been made on the basis of the diagene-sis, color, micro-facies characteristics and thickness of the rocks in conjunction with field observa-tions and petrographical analysis. The stratigraphic division of chemical strata are based on the re-sults of factor analysis and cluster analysis with the seventeen trace elements (As,B, Ba,Co,Cr,Cu,Ga,Mn,Mo, Ni,Pb,Sn,Sr,Ti, V, Zn, and Zr ) in the fifty-nine layers of the section studied as the variables. By comparing chemical stratigraphy with sequence stratigraphy, in combination with the geochemical characteristics of trace elements in the chemical strata, the geochemical response and sedimentary environment features, which were caused by sea-level changes during the Permi-an, have been analyzed.