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| 帕米尔弧东段逆冲推覆构造特征 | |
| 引用本文： | 宋扬,胡建中,王瑞江,李瑞清,田斌,李世杰.帕米尔弧东段逆冲推覆构造特征[J].现代地质,2011,25(1):15-21. |
| 作者姓名： | 宋扬 胡建中 王瑞江 李瑞清 田斌 李世杰 |
| 作者单位： | 1. 中国地质大学,地球科学与资源学院,北京,100083 2. 中国地质大学,地学实验中心,北京,100083 3. 中国地质科学院,矿产资源研究所,北京,100037 4. 中国地质大学,地球科学与资源学院,北京,100083;筑波大学,生命与环境学院,日本,茨城县,305-8572 |
| 基金项目： | 中国石化西部新区勘探指挥部项目(XBKY04-44-04); 中央级公益性科研院所基本科研业务费专项项目(K0803) |
| 摘 要： | 帕米尔弧形构造带是青藏高原碰撞挤压表现最明显的地区之一。通过构造剖面和地震剖面解释,认为帕米尔弧东段逆冲推覆构造具有分带性特点,自南西向北东方向可以划分为逆冲推覆构造的根带、中带、锋带与锋前带,相应地发育叠瓦状逆冲断层、冲断褶皱、断层相关褶皱、单斜构造等不同的构造组合。对逆冲推覆锋带中苏盖特和阿克陶生长背斜、生长地层及形成时序分别进行了研究,确定了帕米尔弧形逆冲推覆构造以前展式(背驮式)向前陆方向扩展,逆冲推覆始于上新世,并一直持续到早更新世。弧形构造东西两段逆冲推覆运动方式和地层缩短量有很大差异:西段为与挤压方向垂直的逆冲,而东段为斜冲兼顺时针走滑;西段地层缩短量大于东段。 |
| 关 键 词： | 帕米尔弧形构造 逆冲推覆 前展式 地层缩短量 |
Characteristics of Overthrust in the Eastern Pamir Structural Arc, Western Tibetan Plateau |
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| SONG Yang,HU Jian-zhong,WANG Rui-jiang,LI Rui-qing,TIAN Bin,LI Shi-jie.Characteristics of Overthrust in the Eastern Pamir Structural Arc, Western Tibetan Plateau[J].Geoscience——Journal of Graduate School,China University of Geosciences,2011,25(1):15-21. | |
| Authors: | SONG Yang HU Jian-zhong WANG Rui-jiang LI Rui-qing TIAN Bin LI Shi-jie |
| Institution: | SONG Yang1,HU Jian-zhong2,WANG Rui-jiang3,LI Rui-qing1,4,TIAN Bin1,LI Shi-jie1(1.School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China,2.Geology Experiment Center,3.Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,4.Graduate School of Life and Environmental Sciences,University of Tsukuba,Ibaraki 305-8572,Japan) |
| Abstract: | Pamir structural arc is one of the most intensively deformed areas produced by continued compressing of Tibetan Plateau after collision between Indian and Eurasian plates.Geological investigation and interpretation for the seismic section in the eastern Pamir structural arc revealed that thrust nappe was composed of 4 zones from southwest to northeast,i.e.,root zone,middle zone,frontal zone and frontal out zone,which are characterized by imbricate thrusting,thrust fold,fault related fold and monoclinal stru... |
| Keywords: | Pamir structural arc thrust nappe piggy-back stratum shortening |
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