鱼嘴构造在相邻能干层能干性估测中的应用  

Application of Fish Head Boudin Structure to Estimation of Competency of Adjacent Competent Layers

作　　者：林彦蒿[1] 曾佐勋[1,2] 

机构地区：[1]中国地质大学地球科学学院,武汉430074 [2]华中构造力学研究中心,武汉430074

出　　处：《高校地质学报》2010年第4期492-497,共6页Geological Journal of China Universities

基　　金：国家地质学理科基地人才培养基金项目(J0830520);国家自然科学基金项目(49972068);国家级《构造地质学》精品课程建设项目

摘　　要：利用不同类型鱼嘴状石香肠构造恢复能干层原岩的初始厚度,并进一步分析原岩发生在应变椭球Z轴方向和X方向的线应变,以应变差折射流变计的方法为基础,推导出一种求相同基质中相邻能干层粘度比的估测方法。以湖北大冶铁山地区采集的两块鱼嘴状石香肠标本为例进行了应用尝试,得到大理岩基质中两层不同的角岩鱼嘴状香肠体的粘度比分别为3.07和0.75。The initial thicknesses of the original rock layers can be restored by various fish head boudins.Furthermore,we can analyze the linear strain in Z and X axes of the strain ellipsoid of the original rocks by the layer thicknesses.In this article, a method for estimating the viscosity ratios of adjacent competent layers was derived from the Strain Differential Refraction Rheology Gauges.An application trial was made for two specimens of fish head boudins from the Tieshan area,Daye,Hubei province.We obtained the viscosity ratios of two adjacent fish head boudin hornfels layers in marble matrix,which are 3.07 and 0.75,respectively.

关 键 词：鱼嘴状石香肠 初始厚度 应变折射 能干性 

分 类 号：P554[天文地球—构造地质学]