【摘要】 在研究渭河地震区宝鸡——渭南、西安——临潼和兰田——华县三条活动断层断层泥的变形特征时,笔者用透射电镜发现了一批与断层活动有成生关系的粘土质应力矿物。而其中的伊利石经X—射线衍射仪进一步测定,(002)面的开形指数在3.1——4.1之间,结晶度在8.5——28.5之间。参照马瑾等的高温高压岩石变形实验数据,变形温度相当于350——450℃,压力相当于2Kb,属于强度大的有震粘滑断层。更多还原

【Abstract】 The deformation property of clay in fault gouge taken from the three active faults,namely Baoji-Weinan, Xian-Lintong and Lantian-Huaxian at the Weine seismic zone wasstudied by electron microscopy and a number of clay stress minerals, which were generatedduring faulting, were discovered. Among these minerals, illite was further determined by Xraydiffractometry The open form index of plane (002) varies from 3.1 to 4.1 and the crystallinityranges widely between 8.5 and 28.5. According to the experimental data of rock deformationunder high pressure and high temperature (Ma Jin etc.), the deformation temperaturecorresponds to 350--450℃ and the pressure corresponds to 2kb. Therefore, the three activefaults are determined of stick-slip with high strength.更多还原