| 内蒙古东南部西乌珠穆沁旗地区石炭纪-二叠纪岩石地层和层序地层 |
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| 引用本文： | 鲍庆中,张长捷,吴之理,王宏,李伟,苏养正,桑家和,刘永生.内蒙古东南部西乌珠穆沁旗地区石炭纪-二叠纪岩石地层和层序地层[J].地质通报,2006,25(5):572-579. |
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| 作者姓名： | 鲍庆中 张长捷 吴之理 王宏 李伟 苏养正 桑家和 刘永生 |
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| 作者单位： | 1. 中国地质调查局,沈阳地质矿产研究所,辽宁,沈阳,110032
2. 内蒙古地质矿产勘查院,内蒙古,呼和浩特,010010 |
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| 基金项目： | 中国地质调查局地质调查项目 |
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| 摘 要： | 通过1:25万区域地质调查,对西乌珠穆沁旗-林西地区石炭纪-二叠纪地层进行了岩石地层学研究与重新归并划分,并进行了生物地层、层序地层及不整合面地层的多重地层划分与对比.研究了测区各地层的基本层序、沉积环境和沉积相,将石炭纪-二叠纪地层划分为3个沉积层序,建立了岩石地层和年代地层格架.石炭纪-早二叠世本巴图组(CPb)、格根敖包组(CPg)和阿木山组(CPa)三者为石炭纪-二叠纪西乌珠穆沁旗海槽同期异相地层的观点,能很好地解释这几套地层的相互关系.寿山沟组(P1ss)地层呈超覆不整合覆于以前地层或地质体之上;大石寨组(P2ds)为达到最大海泛面时海(水)下火山喷发的产物;哲斯组(P2z)是海盆地萎缩期的沉积产物.
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| 关 键 词： | 西乌珠穆沁旗地区 内蒙古 晚石炭世-二叠纪 层序地层 |
| 文章编号： | 1671-2552（2006）05-0572-08 |
| 收稿时间： | 2005-08-10 |
| 修稿时间： | 3/1/2006 12:00:00 AM |
Carboniferous-Permian marine lithostratigraphy and sequence stratigraphy in Xi Ujimqin Qi, southeastern Inner Mongolia, China |
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| BAO Qing-zhong,ZHANG Chang-jie,WU Zhi-li,WANG Hong,LI Wei,SU Yang-zheng,SANG Jia-he,LIU Yong-sheng.Carboniferous-Permian marine lithostratigraphy and sequence stratigraphy in Xi Ujimqin Qi, southeastern Inner Mongolia, China[J].Geologcal Bulletin OF China,2006,25(5):572-579. |
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| Authors: | BAO Qing-zhong ZHANG Chang-jie WU Zhi-li WANG Hong LI Wei SU Yang-zheng SANG Jia-he LIU Yong-sheng |
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| Institution: | 1. Shenyang Institute of Geology and Mineral Resources,China Geological Survey,Shenyang l 10032,Liaoning,China; 2. Inner Mongolia Institute of Geology and Mineral Exploration, Hohhot 010010, Inner Mongolia, China |
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| Abstract: | On the basis of 1:250000 regional geological survey, the authors made a lithostratigraphic study and redivision of the Carboniferous-Permian strata in the Xi Ujimqin Qi-Linxi area, southeastern Inner Mongolia, and used the biostratigraphic, sequence stratigraphic and unconformity approaches to make multiple stratigraphic division and correlation. They studied the essential sequences, depositional environment and sedimentary facies and divided the Carboniferous-Permian strata into three depositional sequences and established the lithostratigraphic and chronostratigraphic frameworks. The view that the Carboniferous-Early Permian Gegen Obo Formation (CPg), Bumbat Formation (CPb) and Amushan Formation (CPa) are contemporaneous but heteropic strata in the Carboniferous-Permian Xi Ujimqin Qi sea trough can well explain the mutual relation of these stratigraphic units. The Shoushangou Formation (P1ss)overlaps unconformably on pre-existing strata or geologic bodies; the Dashizhai Formation(P2ds) is the product of submarine volcanic eruption at the time of a maximum marine-flooding surface; and the Zhesi Formation (P2Z) is the production of deposition during shrinkage of a sea basin. |
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| Keywords: | Xi Ujimqm Qi Inner Mongolia Late Carboniferous-Permian sequence stratigraphy |
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