| 河套盆地吉兰泰凹陷中生代构造层划分及意义 |
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| 引用本文： | 杨德相,屈争辉,陈树光,李壮福,吴健平,王建广,武 函.河套盆地吉兰泰凹陷中生代构造层划分及意义[J].高校地质学报,2020,26(6):691-703. |
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| 作者姓名： | 杨德相 屈争辉 陈树光 李壮福 吴健平 王建广 武 函 |
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| 作者单位： | 1. 中国石油 华北油田公司勘探开发研究院，任丘 062550；
2. 中国矿业大学 煤层气资源与成藏过程教育部重点实验室，徐州 221008；
3. 中国矿业大学 资源与地球科学学院，徐州 221116 |
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| 摘 要： | 2017年河套盆地临河坳陷油气勘探取得重要发现，基于区域中生代以来大地构造演化系统梳理，以钻井与地震对照、研究区与邻近盆地类比为研究方法，划分河套盆地临河坳陷南部吉兰泰凹陷中生代构造层，并绘制其分布范围，探讨其赋存特征与意义。结果表明：研究区中生界除三叠系外发育齐全，厚度巨大，且白垩系自上而下可细分为K1 I、K1 II和K1III三个构造层；除K1I构造层全区广覆式发育外，其它构造层呈楔状—缓楔状，长轴沿主控断裂NNE向延伸；研究区自中生代以来盆地性质经历了早中侏罗世断陷、早白垩世早期断陷、早白垩世中期断拗转换和早白垩世晚期拗陷的演化过程；F 3和F 7断层之间的K1 II和K1 III构造层、F 7断层东部的J构造层均具良好的油气勘探前景。
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| 关 键 词： | 吉兰泰凹陷 中生代 构造层 划分与对比 赋存与意义 |
Determination of Mesozoic Tectostratigraphic Units and Its Significance in Jilantai Sag,Hetao Basin |
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| YANG Dexiang,QU Zhenghui,CHEN Shuguang,LI Zhuangfu,WU Jianping,WANG Jianguang,WU Han.Determination of Mesozoic Tectostratigraphic Units and Its Significance in Jilantai Sag,Hetao Basin[J].Geological Journal of China Universities,2020,26(6):691-703. |
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| Authors: | YANG Dexiang QU Zhenghui CHEN Shuguang LI Zhuangfu WU Jianping WANG Jianguang WU Han |
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| Institution: | 1. Exploration and Development Research Institute of Huabei Oilfield Company, China National Petroleum Corporation, Renqiu 062550, China;
2. Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process, Ministry of Education, China University of Mining and Technology, Xuzhou 221008, China;
3. School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China |
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| Abstract: | Significant discoveries of petroleum exploration have been achieved in 2017 in the Linhe Depression, Hetao Basin. Based on a literature review of the tectonic evolution of the study area since the Mesozoic, combined methods of well-seismic comparison and basin analogy, the Mesozoic tectostratigraphic units of Jilantai Sag have been determined, and their occurrence and significance have also been studied. The results show that, except for the Triassic, the Mesozoic strata were well developed in the study area. Particularly, the Cretaceous strata can be further divided into three tectostratigraphic units, i.e., K1I、K1II and K1
III; The K1 I is characterized by abroad sedimentation unit covering the whole study area, while the other tectostratigraphic units are wedge-shaped with major axes aligning along the NNE main faults; The Mesozoic basin type of the Jilantai Sag have experienced rift stage during the Early-Middle Jurassic, rift stage during the early Early Cretaceous, transitional stage from rift to depression during the middle Early Cretaceous, depression stage during the late Early Cretaceous; The strata of the K1 II and K1 III tectostratigraphic units located between the faults F3 and F 7, and the Jtectostratigraphic unit located in the east of fault F 7 show great potential of petroleum exploration. |
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| Keywords: | Jilantai Sag Mesozoic tectostratigraphic unit division and correlation occurrence and significance |
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