| 大兴安岭南部上二叠统林西组新认识 |
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| 引用本文： | 郑月娟,苏飞,常诗楠,张健,黄欣,陈树旺.大兴安岭南部上二叠统林西组新认识[J].地质与资源,2014,23(1):25-30,37. |
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| 作者姓名： | 郑月娟 苏飞 常诗楠 张健 黄欣 陈树旺 |
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| 作者单位： | 1. 沈阳地质矿产研究所/中国地质调查局 沈阳地质调查中心, 辽宁 沈阳 110034;2. 内蒙古地质勘查有限责任公司, 内蒙古 呼和浩特 010011 |
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| 基金项目： | 中国地质调查局项目“松辽外围中新生代盆地群油气地质综合调查”(编号1212010782001、1212011120970),“东北地区晚古生代地层划分对比及油气资源前景研究”(编号1212011121086)资助 |
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| 摘 要： | 在综合分析前人资料和野外实际工作的基础上,根据岩石组合特征,将林西组大致分为两部分:下部为一套灰色、灰紫色、黄褐色的河流相砾岩、砂砾岩组合,含Paracalamites sp.,Eichwaldia sp.,Pecopterissp.等植物化石,分布于研究区南部的林西地区,推测为盆地的边缘相沉积,同时期盆地内部可能存在海陆交互相沉积;上部为黑、灰、绿为主色调的砂岩、板岩组合,含晚二叠世植物化石Paracalamites sp.,Pecopteris sp.,Cladophlebis sp.,Noeggerathiopsis cf.cylovaensis等及双壳类Palaeanodonta-Palaeomutela组合.在研究区广泛分布,但厚度及岩石组合特征横向变化较大,局部地区上部层位有火山岩,反映沉积环境比较复杂.
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| 关 键 词： | 大兴安岭南部 林西组 岩石组合特征 |
| 收稿时间： | 2012-06-21 |
NEW UNDERSTANDING OF THE UPPER PERMIAN LINXI FORMATION IN SOUTHERN DAXINGANLING REGION,CHINA |
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| ZHENG Yue-juan,SU Fei,CHANG Shi-nan,ZHANG Jian,HUANG Xin,CHEN Shu-wang.NEW UNDERSTANDING OF THE UPPER PERMIAN LINXI FORMATION IN SOUTHERN DAXINGANLING REGION,CHINA[J].Geology and Resources,2014,23(1):25-30,37. |
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| Authors: | ZHENG Yue-juan SU Fei CHANG Shi-nan ZHANG Jian HUANG Xin CHEN Shu-wang |
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| Institution: | 1. Shenyang Institute of Geology and Mineral Resources, CGS, Shenyang 110034, China;2. Inner Mongolia Geological Exploration Co., Ltd., Hohhot 010011, China |
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| Abstract: | Based on a systematic study of previous data and field survey,the authors divided the Linxi Formation into two lithologic members from bottom to top.The first member,mainly distributed in Linxi area,is dominated by gray-purple fluvial sandstone and conglomerate,containing plants of Paracalamites sp.,Eichwaldia sp.and Pecopteris sp.The second member,widely spreading in the southern part of Daxinganling region,consists mostly of black gray sandstone-slate with volcanic rocks at the upper part,containing abundant fossils of bivalves and plants such as Palaeanodonta-Palaeomutela assemblage,as well as Paracalamites,Pecopteris,Cladophlebis and Noeggerathiopsis. |
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| Keywords: | southern Daxinganling region Linxi Formation rock association |
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