北京西山膨缩石香肠流变性质构造研究初探  

A PRELIMINARY STUDY ON RHEOLOGICAL BEHAVIOR OF ROCKS IN XISHAN,BEIJING BY USE OF BOUDINAGE

作　　者：曾佐勋[1] 付永涛[1] 李艳霞 

机构地区：[1]中国地质大学

出　　处：《地质力学学报》1997年第1期45-49,共5页Journal of Geomechanics

基　　金：国家教委博士点基金

摘　　要：本文探索了利用膨缩石香肠构造定量估测古岩石流变参数的方法，获得北京西山云母大理岩中的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；板岩中的石英脉的应力指数在２．５７－４．７５之间，与板岩的粘度比在９４．８－１７５．８之间；白云岩中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．Both mechanical analysis and simulating experiment of boudinage indicates its non Newtonian fluid behaviour.This paper attempts a quantitative evaluation of the rheolegical parameters of rocks from a study of the boudinage structures in Xishan,Beijing.The authors obtain a stress exponent between 3.06 to 7.69,for the calcite quartz vein embedded in cipolino and a viscosity ratio for the two varying from 8.74 to 20.27;a stress exponent of 2 57 to 4.75 for the quartz vein in slate and a viscosity ratio of them ranging from 94.8 to 175 8;and a stress exponent between 2.25 and 3.93,for the siliceous bands interbedded in dolomite and a viscosity ratio between them varying from 2.38 to 4.26.

关 键 词：应力指数 膨缩石香肠构造 北京 流变性质 

分 类 号：P548.21[天文地球—构造地质学]