| 四川盆地北部大巴山山前带构造样式与变形机制 |
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| 引用本文： | 汪泽成,赵文智,徐安娜,李登华,崔瑛.四川盆地北部大巴山山前带构造样式与变形机制[J].现代地质,2006,20(3):429-435. |
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| 作者姓名： | 汪泽成 赵文智 徐安娜 李登华 崔瑛 |
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| 作者单位： | 中国石油勘探开发研究院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 利用最新的地震和地表地质资料,对四川盆地北部大巴山山前构造进行综合解释。按构造样式差异,将大巴山山前构造带划分出3个构造带:通江—黄金口西NW向潜伏断褶带、五宝场—铁山坡NW—NE向构造交汇带及温泉井—奉节近EW向构造带;其对应的前缘构造样式分别为反冲断层型、褶皱滑脱型及双向冲断—褶皱型。中生代以来的构造变形主要有2期:印支晚期,以NE向褶皱作用为主;燕山中、晚期—喜马拉雅期,以NW向冲断—褶皱作用为主。大巴山前缘构造受不同方向挤压应力联合作用的控制。
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| 关 键 词： | 大巴山前陆盆地 构造样式 构造叠加 冲断—褶皱 |
| 文章编号： | 1000-8527(2006)03-0429-07 |
| 收稿时间： | 12 23 2005 12:00AM |
| 修稿时间： | 03 5 2006 12:00AM |
Structure Styles and Their Deformation Mechanisms of Dabashan Foreland Thrust Belt in the North of Sichuan Basin |
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| WANG Ze-cheng,ZHAO Wen-zhi,XU An-na,LI Deng-hua,CUI Ying.Structure Styles and Their Deformation Mechanisms of Dabashan Foreland Thrust Belt in the North of Sichuan Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2006,20(3):429-435. |
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| Authors: | WANG Ze-cheng ZHAO Wen-zhi XU An-na LI Deng-hua CUI Ying |
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| Institution: | Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China |
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| Abstract: | By means of the latest seismic data and surface geology,structure styles of Dabashan foreland thrust belt are comprehensively interpreted.According to the difference in their styles,three structure belts can be determined:NW buried thrust belt of Tongjiang-Huangjinkou,NW-NE intersection belt of Wubaochang-Tieshanpo,and EW structure belt of Wenquanjing-Fengjie.Correspondingly,front structure styles can be divided into 3 types: back-thrust fault type,folded detachment fault type,and vis-à-vis thrust faulted fold type.There are two main stages of structure deformations since Mesozoic.The first one is Late Indo-Sinian epoch,mainly forming NE folds;the other is Mid-Late Yanshan to Himalaya,mostly developing NW thrust faults.Multi-stages stacked structure deformations are very obvious,and controlled by combined pressure stress in different directions. |
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| Keywords: | Dabashan foreland basin structure style stacked structure thrust faulted-fold |
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