摘要
运动学涡度是岩石递进变形中非共轴性的一种量度，利用其对韧性剪切带进行应变分解，确定剪切作用类型是当今构造地质学研究的较新课题。极摩尔圆同时适用于共轴和非共轴变形，是应变分析的一种有利工具，并特别适用于从应变测量数据求取运动学涡度；从力学理论角度对运动学涡度进行了系统而简明的论述，对极摩尔圆的原理进行了推导，并提出了它们在韧性剪切带应变分析中的应用。
Kinematic vorticity is a measurement of the non coaxiality in progressive deformation. With this theory, decomposing the strain in a ductile shear zone and defining the shearing type which formed the shear zone are new subjects for structural geology. The polar Mohr diagram is suitable for both coaxial and non coaxial deformation and, therefore, is a powerful tool for strain analysis. It is especially useful for obtaining the kinematic vorticity from the measured strain data of a general shear zone. This paper, briefly and systematically, discribes the theory of kinematic vorticity, deduces the principle of polar Mohr diagram and sets forth their applications.
出处
《地质科技情报》
CAS
CSCD
北大核心
1997年第3期33-39,共7页
Geological Science and Technology Information
基金
国家自然科学基金
高校博士学科点专项科研基金
关键词
运动学涡度
极摩尔圆
韧性剪切带
应变分析
kinematic vorticity,polar Mohr circle,ductile shear zone,strain analysis
