摘要
介绍利用地质构造特征获取岩石流变信息的方法,包括应变折射、劈理折射、膨缩石香肠构造和能干层褶皱.作者利用石香肠构造求得北京西山方解石石英脉的应力指数在3.06～7.69之间,与云母大理岩的粘度比在8.74～20.27之间;而硅质条带的应力指数在2.25～3.93之间,与白云岩的粘度比在2.38～4.26之间.通过能干层褶皱获得石英脉的应力指数下限大于10,并利用下限值求得石英脉对板岩的粘度比为241～662.
The methods to obtain rheological information from characteristics of geological structures are introduced , including strain refraction, cleavage refraction, pinch-and-swell boundinage and competent fold. The following data are obtained from the observation of boundinages and folds developed in Xishan, Beijing. The stress exponents of calcite quartz vein range from 3.06 to 7.69, the viscosity ratio of which to cipolino varies from 8.74 to 20.27. The stress exponents of striped sili-calite vary from 1.29 to 2.99, the viscosity ratio of which to dolomite, ranges from 1.37 to 3.15. The lower limit of the stress exponent of quartz vein is larger than 10, and the viscosity of quartz vein to slate varies from 241 to 662.
出处
《华南地质与矿产》
CAS
1996年第4期32-36,共5页
Geology and Mineral Resources of South China
基金
国家教委博士点基金资助项目成果
关键词
岩石
应力指数
粘度比
流变性质
岩石构造
stress exponent viscosity ratio strain refraction pinch-and-swell boundi-nage competent fold
