中国上石炭统上部及下二叠统海相地层中阶的划分  

Stages of upper Upper Carboniferous and Lower Permian marine strata in China

作　　者：夏国英[1] 丁蕴杰[1] 

机构地区：[1]天津地质矿产研究所,天津300170

出　　处：《中国地质》2002年第1期20-29,共10页Geology in China

基　　金：国家自然科学基金;地质行业技术发展基金(4870093);中国地质科学院课题(Y-92-1)联合资助。

摘　　要：明确而详细地提出了中国上石炭统上部及下二叠统海相年代地层单位的具体框架。将上石炭统上部划分为逍遥阶、下杨家河阶;下二叠统划分为上杨家河阶、范家河阶、垭口阶及隆林阶。明确了阶的定义、动物群特征、磁性地层特征及其与相关地层的关系。所划分的阶均能与世界标准年代地层进行详细而有依据的对比。In1992,according to the fossil assem blage zones,magnetic approach and oxygen-carbon isotope studies Ding divided the Upper Carboniferous to Lower Permian strata into five stages.In this paper,on the basis of Ding's division with some modification,the authors divide the upper Upper Carboniferous into the Xiaoyaoan Stage and Lower Yangjjia hean Stage and the Lower Permi an into the Upper Yangjiahean Stage,Fanjiahean Stage,Yakouan Stage and Longlinian Stage.The first five stages were established by Ding et al.in1992,while the last stage was reported by Huang et al.in1982.The authors give a clear and definite definition of the stages,characterize the fau nas and magnetostratigraphy and clarify their rela-tions to the related strata.The stages thus distin guished can all be correlated with the standard chronos-tratigraphic units of the world in details and on well-established grounds.

关 键 词：陕西 上石炭统 下二叠统 年代地层阶 划分 中国 磁性地层 海相地层 

分 类 号：P534.45[天文地球—古生物学与地层学] P534.46[天文地球—地质学]