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| 湖南桑植县仁村坪上二叠统—下三叠统底部菊石动物群序列及其区域对比 | |
| 引用本文： | 张宗言,何卫红,张阳,杨廷禄,吴顺宝.湖南桑植县仁村坪上二叠统—下三叠统底部菊石动物群序列及其区域对比[J].地质科技情报,2009,28(1). |
| 作者姓名： | 张宗言 何卫红 张阳 杨廷禄 吴顺宝 |
| 作者单位： | 1. 南京地质矿产研究所,南京,210016 2. 中国地质大学生物与环境地质教育部重点实验室,武汉,430074 3. 中国地质大学研究生院,武汉,430074 |
| 基金项目： | 国家自然科学基金，教育部资助项目，中国石油化工股份有限公司资助项目 |
| 摘 要： | 湖南桑植县仁村坪剖面二叠-三叠系界线地层连续,菊石动物化石丰富.根据该剖面上二叠统大隆组至下三叠统大冶组底部菊石动物群的分布,自下而上划分为4个菊石带:Araxoceras-Konglingites-Sanyangites带、Sinoceltites带、Pseudotirolites-Rotodiscoceras带和Hypophiceras-Ophiceras-Lytophiceras带.通过对该剖面菊石和牙形石生物地层及其与华南其他剖面的对比可知,Araxoceras-Konglingites-Sanyangites带与牙形石Neospathodus orientalis带同期,为吴家坪期晚期;Sinoceltites带与牙形石N.subcarinata-N.wangi带同期,为长兴期晚期;Pseudotirolites-Rotodiscoceras带与牙形石N.postwangi-N.changxingensis带和N.xiangsiensis-N.changxingensis带同期,为长兴期晚期;Hypophiceras-Ophiceras-Lytophiceras带与H.parvus、I.isarcica-I.staesche和N.planata 3个牙形石带同期,相当于印度期早期.根据仁村坪剖面菊石Hypophiceras-Ophiceras-Lytophiceras带底界的出现位置,将该剖面的二叠-三叠系界线确定在第27a层的中部. |
| 关 键 词： | 仁村坪剖面 菊石带 二叠-三叠系界线 区域对比 |
Late Permian-Earliest Triassic Ammonoid Sequences from the Rencunping Section,Sangzhi County,Hunan Province,South China and Their Regional Correlation |
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| ZHANG Zong-yan,HE Wei-hong,ZHANG Yang,YANG Ting-lu,WU Shun-bao.Late Permian-Earliest Triassic Ammonoid Sequences from the Rencunping Section,Sangzhi County,Hunan Province,South China and Their Regional Correlation[J].Geological Science and Technology Information,2009,28(1). | |
| Authors: | ZHANG Zong-yan HE Wei-hong ZHANG Yang YANG Ting-lu WU Shun-bao |
| Institution: | 1.Nanjing Institution of Geology and Mineral Resources;Nanjing 210016;China;2a.Key Laboratory of Geobiology and Environmental Geology of Ministry of Education;2b.Graduate School;China University of Geosciences;Wuhan 430074;China |
| Abstract: | At the Rencunping Section,Sangzhi County,Hunan Province,abundant ammonoids were found in the Permian/Triassic(P/T) boundary strata.Based on the distribution of ammonoid fauna from the Upper Permian Dalong Formation to the base of the Lower Triassic Daye Formation,four ammonoid zones are recognized:(1)Araxoceras-Konglingites-Sanyangites zone,(2)Sinoceltites zone,(3)Pseudotirolites-Rotodiscoceras zone,and(4)Hypophiceras-Ophiceras-Lytophiceras zone.Compared with the other sections of South China,the Araxoceras... |
| Keywords: | Rencunping Section ammonoid zone P-T boundary regional correlation |
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