| 郯庐断裂南段走滑和伸展断裂的深部结构及位置关系 |
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| 引用本文： | 张交东,杨长春,刘成斋,刘德良,杨晓勇,刘传鹏,黄松,任凤楼.郯庐断裂南段走滑和伸展断裂的深部结构及位置关系[J].地球物理学报,2010,53(4):864-873. |
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| 作者姓名： | 张交东 杨长春 刘成斋 刘德良 杨晓勇 刘传鹏 黄松 任凤楼 |
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| 作者单位： | 1.中国科学院地质与地球物理研究所，北京 100029;2.中石化胜利油田分公司，山东东营 257100;3.中国科学技术大学地球和空间科学学院，合肥 230026 |
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| 基金项目： | 国家自然科学基金重点项目（90814011）和中国博士后科学基金（20090450566）共同资助. |
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| 摘 要： | 郯庐断裂带是亚洲东部著名的断裂活动带，经过多年的研究，取得了一系列重要成果，但涉及断裂带内部精细结构、走滑与伸展断裂体系的研究成果较少.本文以其中的嘉山-庐江段为对象，依据高精度大地电磁（EMAP）和人工地震剖面及航磁异常资料，剖析了断裂带内部精细结构，明确了伸展和走滑断裂体系组成和平面位置，认为该段由多条主干断裂组成，具有断裂属性横向分区的特征：以池河-太湖断裂为界，东侧主要发育池河-太湖(隐伏)、嘉山-庐江和古河-散兵等断裂，组成正花状构造样式，主要呈现压剪性走滑活动特征；西侧主要发育五河-合肥、石门山和池河-太湖（浅部）等断裂，呈现半地堑结构，其中2条断裂往南伸入合肥盆地而消失，只有池河-太湖断裂继续南延为合肥盆地的东部边界，主要呈现伸展活动特征.本文提出的断裂带横向分区等认识，既融合了前人有关“裂谷论”和“平移论” 的重要成果，又弥合了二者的认识分歧，为今后精细研究郯庐断裂带提供了一条新思路.
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| 关 键 词： | 郯庐断裂带 嘉山-庐江段 走滑断裂体系 伸展断裂体系 深部结构 |
| 收稿时间： | 2009-09-22 |
| 修稿时间： | 2010-02-25 |
The deep structures of strike-slip and extension faults and their composite relationship in the southern segment of Tanlu fault zone |
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| ZHANG Jiao-Dong,YANG Chang-Chun,LIU Cheng-Zhai,LIU De-Liang,YANG Xiao-Yong,LIU Chuan-Feng,HUANG Song,LIN Feng-Lou.The deep structures of strike-slip and extension faults and their composite relationship in the southern segment of Tanlu fault zone[J].Chinese Journal of Geophysics,2010,53(4):864-873. |
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| Authors: | ZHANG Jiao-Dong YANG Chang-Chun LIU Cheng-Zhai LIU De-Liang YANG Xiao-Yong LIU Chuan-Feng HUANG Song LIN Feng-Lou |
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| Institution: | 1.Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029,China;2.Shengli Oil Field Co.Ltd, Dongying 257100,China;3.University of Science & Technology of China, Hefei 230026, China |
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| Abstract: | Tanlu fault zone is the biggest one in east China. A series of significant study results have been obtained in the past forty years, but there still are understanding differences on some important issues such as its deep structure. Taking Jiashan-Lujiang segment as research object, this paper researches the interior fine structure and sediment response by analysis combining high precision EMAP method, artificial seismic sections with gravity and magnetism information. It also elaborates the system configulation and the locations of extension and strike-slip faults, and it is figured out that this segment is composed of many faults with laterally different characteristics. The east of Chihe-Taihu fault is strike-slip area, there are three main faults (Chihe-Taihu deep fault, Jiashan-Lujiang fault, and Guhe-Sanbing deep fault) which form normal flower structure; the west of it is extending area, It is composed of three faults near Dingyuan county and two of them (Wuhe-Hefei fault and Shimenshan fault) extend southward into Hefei basin and disappear there. Chihe-Taihu fault extends southward continually and becomes the eastern boundary of Hefei basin. The paper combines with the previous research results on rifting and translation and provides a case for the deep structure research of large scale fault belts. |
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| Keywords: | Tanlu fault zone Jiashan-lujiang segment Strike-slip structure Extending structure Deep structure |
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