| 川北曾家地区二叠纪──早三叠世地层学研究 |
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| 引用本文： | 朱利东,刘登忠,徐新煌.川北曾家地区二叠纪──早三叠世地层学研究[J].成都理工大学学报(自然科学版),1997(1). |
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| 作者姓名： | 朱利东 刘登忠 徐新煌 |
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| 作者单位： | 成都理工学院地质学系，成都理工学院资源经济系 |
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| 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，并分析了相应的环境演变和不同的构造背景
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| 关 键 词： | 二叠纪──早三叠世，生物地层，层序地层，川北 |
PERMIAN EARLY TRIASSIC BIOSTRATIGRAPHY AND SEQUENCE STRATIGRAPHY IN ZENGJIA AREA OF NORTHERN SICHUAN PROVINCE |
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| Zhu Lidong,Liu Dengzhong,Xu Xinhuang.PERMIAN EARLY TRIASSIC BIOSTRATIGRAPHY AND SEQUENCE STRATIGRAPHY IN ZENGJIA AREA OF NORTHERN SICHUAN PROVINCE[J].Journal of Chengdu University of Technology: Sci & Technol Ed,1997(1). |
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| Authors: | Zhu Lidong Liu Dengzhong Xu Xinhuang |
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| Institution: | Chengdu University of Technology |
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| Abstract: | 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. |
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| Keywords: | Permian Early Triassic biostratigraphy sequence stratigraphy northern Sichuan |
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