Abstract: Fault gouges record a great deal of information on fault activity. Preferred orientation and fabric of minerals have close relation to the mode of slip along the fault. In this paper,the illite fabric in the Xiangshan Tiangjingshan fault zone is determined by using the X-ray method with Textrete-Goniometer. Our results indicate that the illite fabric in the middle sgement has no preferred orientation and it is the result of stick-slip of the fault,while that in the east and west segments has maximum density areas and it is caused by the sinistral shear creep-slip of the fault.

Key words: Fault gouge, Fabric analysis, X-ray analysis

摘要： 断层泥矿物的优选方位和组构型式与断层活动的性质有着密切的关系。使用X射线组构测角仪测试香山-天景山断裂不同区段断层泥伊利石的组构,结果显示,香山-天景山断裂中段断层泥伊利石组构无优选方位,是断层粘滑的结果;东西两段断层泥伊利石组构有一个极密区,是断层左旋剪切蠕动的结果。

关键词: 断层泥, 组构分析, X光分析