长江三峡仙女山断层带的变形结构及其动力学分析  

THE DEFORMATIONAL STRUCTURES AND DYNAMIC ANALYSIS OF XIANNUSHAN FAULTT ZONE IN THE CHANGJIANG RIVER GORGE AREA

作　　者：吴树仁[1] 刘子忠[1] 秦兴黎 李东林[1] 

机构地区：[1]中国地质大学,长江水利委员会三峡区勘测大队

出　　处：《地震地质》1994年第3期217-228,共12页Seismology and Geology

摘　　要：根据仙女山断层分带性、分段性、分层性和断层变形结构特征，建立了其空间变形结构模式，进而讨论了仙女山断层带时间演化系列中两个主要变形阶段的几何学和运动学特征，并利用断层带的共轭节理、断面擦痕和显微构造标志分别确定燕山主期和喜马拉雅主期构造应力方向和差异应力大小，获得了若干重要的动力学资料。On the basis of zonations segmentation and layering of the Xiannushan fault zone，a spatialdeformational structure model has been established，and geometrical and kinematic characteristicsof the fault in two main deformational stages of its temporal evolution sequence are discussed． Interms of conjugate joints， striations on fault planes and microstructure in fault zone，the tectonicstress directions and differential stress in main Yanshanian tectonic deformation and main Hi-malayan phases tectonic deformation have been determined, respectively，and some important dy-namic information has been obtained.

关 键 词：仙女山 断层带 动力学 变形结构 

分 类 号：P542.3[天文地球—构造地质学]