摘要
川北曾家地区二叠纪－早三叠世的生物地层研究表明，该区二叠系有４个生物带：Ｎａｎｋｉｎｅｌａｌａｔａ－Ｐｉｓｏｌｉｎａｓｔａｆｆｅｌｉｎｏｉｄｅｓ组合带，Ｎｅｏｓｃｈｗａｇｅｒｉｎａ－Ｖｅｒｂｅｅｋｉｎａｖｅｒｂｅｅｋｉ组合带，Ｃｏｄｏｎｏｆｕｓｉｅｌａ－Ｒｅｉｃｈｅｌｉｎａｃｈａｎｇｈｓｉｎｇｅｎｓｉｓ组合带和Ｐｓｅｕｄｏｔｉｒｏｌｉｔｅｓ－Ｃｈａｏｔｉａｎｏｃｅｒａｓ组合带；下三叠统也有４个生物带：Ｃｌａｒａｉａｗａｎｇｉ－Ｏｐｈｉｃｅｒａｓ组合带，Ｃｌａｒａｉａａｕｒｉｔａ－Ｃｌａｒａｉａｓｔａｃｈｅｉ组合带，Ｅｕｍｏｒｐｈｏｔｉｓｍｕｌｔｉｆｏｒｍｉｓ－Ｅｎｔｏｌｉｕｍ组合带和Ｔｉｒｏｌｉｔｅｓ组合带。在此基础上，结合火山沉积事件、沉积物注入和分布的明显变化及陆上暴露标志等的研究，建立了该区二叠系－下三叠统层序地层格架，划分出７个层序。
The study of biostratigraphy of Permian Triassic System in Zengjia area of northern Sichuan Province indicates that there are four biozones in Permian System and four biozones in Triassic System. Based on the biostratigraphic research,combining with volcanic sedimentary events, the obvious variation of sediment input and dispersion and the subaerial exposed markers, the authors construct the Permian Early Triassic sequence stratigraphic framework, divide the north of Sichuan Province into seven sequences and analyse the sedimentary evolution and different structural settings.
出处
《成都理工学院学报》
CSCD
1997年第1期90-97,共8页
Journal of Chengdu University of Technology
基金
国家计委1:5万区调和成都理工学院青年科学基金联合资助项目
关键词
二叠纪
早三叠世
生物地层
层序地层
地层学
Permian Early Triassic
biostratigraphy
sequence stratigraphy
northern Sichuan
