| 内蒙古西部银额盆地及邻区二叠系隆林阶—冷坞阶层序地层格架 |
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| 引用本文： | 史冀忠,陈高潮,姜亭,韩伟,李渭.内蒙古西部银额盆地及邻区二叠系隆林阶—冷坞阶层序地层格架[J].中国区域地质,2012(10):1657-1668. |
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| 作者姓名： | 史冀忠 陈高潮 姜亭 韩伟 李渭 |
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| 作者单位： | 中国地质调查局西安地质调查中心,陕西西安710054 |
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| 基金项目： | 中国地质调查局国土资源大调查项目《银额盆地及其邻区石炭-二叠系油气远景调查》（编号：1212011120962） |
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| 摘 要： | 依据露头层序地层学原理,对银额盆地及邻区二叠系隆林阶—冷坞阶露头剖面进行层序界面的识别和层序划分,共划分为2个Ⅲ级层序。在对东西、南北向层序地层对比的基础上,初步建立了研究区的层序地层格架。隆林期—罗甸期全区发生大范围的海侵接受海相沉积,以滨海—浅海陆棚相为主,局部发育碳酸盐岩台地相,盆地边缘发育过渡相沉积,有2个沉积中心,黑鹰山-额济纳旗坳陷带的沉积中心在碧云泉南-芦草井地区,柳园-巴丹吉林坳陷带的沉积中心在卡路山-杭乌拉一带。祥播期-冷坞期继承了前期的沉积格局,只是沉积范围向北西缩小,黑鹰山-额济纳旗坳陷带的沉积中心在芦草井地区,柳园-巴丹吉林坳陷带水体变浅,沉积中心在古硐井地区。
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| 关 键 词： | 银额盆地及其邻区 二叠系 隆林阶—冷坞阶 层序地层格架 |
The sequence stratigraphic framework of Permian Longlinian-Lengwuan Stage in Yingen-Ejin Banner basin and its adjacent areas, western Inner Mongolia. |
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| SHI Ji-zhong,CHEN Gao-chao,JIANG Ting,HAN Wei,LI Wei.The sequence stratigraphic framework of Permian Longlinian-Lengwuan Stage in Yingen-Ejin Banner basin and its adjacent areas, western Inner Mongolia.[J].Regional Geology of China,2012(10):1657-1668. |
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| Authors: | SHI Ji-zhong CHEN Gao-chao JIANG Ting HAN Wei LI Wei |
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| Institution: | Xi＇an Center of China Geological Survey, Xi＇an 710054, Shaanxi, China |
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| Abstract: | According to the basic principles of outcrop sequence stratigraphy, the strata of Permian Longlinian-Lengwuan Stage in Yingen-Ejin Banner basin and its adjacent areas are divided into two third-order sequences through sequence interface identification and sequence classification. The sequence stratigraphic framework of the study area was established by comparing E-W-trending and N-S-trending sequence stratigraphic criteria. In Permian Longlinian-Luodianian Stage, the study area was of marine facies deposition through marine transgression, mainly developed offshore and neritic shelf facies sediments, and partly developed carbonafite plateau fa- cies, with the development of transition facies sediments along the boundary of the basin. It had two depocenters. The depocenter of Heiyingshan-Ejin Banner depression was Biyunquannan-Lucaojing area, whereas the depocenter of Liuyuan-Badanjilin depression was Kalushan-Hangwnla area. The study area inherited the sedimentary framework of the early Permian Xiangboan-Lengwuan Stage, only the deposition range shrank northwestward. The depocenter of Heiyingshan-Ejin Banner depression was Lucaojing area. The water body of Liuyuan-Badanjilin depression became shallow, and the depocenter was Gudon~ing area. |
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| Keywords: | Yingen-Ejin Banner basin Permian Longlinian-Lengwuan Stage sequence stratigraphic framework |
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