压力影构造的成因学、运动学和动力学初步分析  

A PRELIMINARY ANALYSIS OF GENESIS,KINEMATICS AND DYNAMICS FOR PRESSURE SHADOWS STRUCTURE

作　　者：凌小惠[1] 

机构地区：[1]中国地质科学院地质力学研究所

出　　处：《地质力学学报》1989年第2期227-240,共14页Journal of Geomechanics

摘　　要：压力影构造是一种较为常见的旋转应变标志体,研究它具有一定的理论意义和实用价值。作者通过多年研究,提出了一些新认识。本文从增量应变角度,结合三维空间,将压力影构造分为二大类型,进行了增量应变测量,并修正了计算公式,使其更真实地反映应变速率和应变增值;此外,还首次进行了初始构造应力场数学模拟。压力影构造的研究,可以以微见大,获得区域范围,乃至更大范围的构造信息,以便分析构造环境,探索地壳运动。A pressure shadow structure is a common rotational strain marker.In this paper,pressure shadow structures are divided into two types in terms of the increment strain in three trimensions. A modification of the formula proposed by previous workers for calculating the increment strains is presented by repeated measurements by the author,which may more approach the actual strain rate and strain increment.A modelling of the initial stress field for pressure shadows was made. A study of microstructures such as pressure shadows may not only help understanding reginal merostructures,but also reconstructing the mechanical properties of the structural planes,and ana- lyzing regional palaeotectonic environments,their development and evolution.

关 键 词：压力影 增量应变 应变标志 区域变质岩 应变测量 西秦岭 不整合 压溶作用 演化阶段 岩石变形 

分 类 号：P55[天文地球—构造地质学]