贵州广顺二叠系化学地层的划分及沉积环境分析  

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

作　　者：南君亚[1] 周德全 叶健骝[1] 张权莉 

机构地区：[1]中国科学院地球化学研究所,贵阳550002 [2]贵州省地矿局区域地质研究院,贵阳550005

出　　处：《矿物学报》1996年第2期223-230,共8页Acta Mineralogica Sinica

基　　金：国家自然科学基金!49372113

摘　　要：本文以贵州省广顺二叠纪坝子头－茶叶剖面作为基准剖面，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，结合化学地层单元微量元素地球化学特征，分析了二叠纪海平面变化所产生的地球化学响应及沉积环境特征。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.

关 键 词：化学地层 层序地层 海平面变化 沉积环境 二叠纪 

分 类 号：P534.46[天文地球—古生物学与地层学]