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近年来,变质岩分布地区的地质填图和构造研究工作越来越重视建立构造历史序列,旨在阐明构造规律及其演化过程. π组构分析是构造解析的一个重要组成部分,也是在野外地质填图基础上进行的一项专门性工作.进行π组构分析时,常常发现一些图解特征不明显,须作趋势判别,以便从极密与环带的两重性中,确定其相对发育程度.为了进行有效的判别,需要对某些数据进行数学处理.刘如琦等人曾介绍过判别的方法和计算步骤,其计算工作是在电子计算机上完成的,现阶
In recent years, the research on geological mapping and tectonics in the area of metamorphic rock pay more and more attention to the establishment of tectonic history sequence, which aims to elucidate the tectonic rule and its evolution process.π -configuration analysis is an important component of tectonic resolution and also in the field Geological mapping based on a specialized work carried out.I structural analysis, often found that some of the graphical features are not obvious, must be used to determine the trend in order to be extremely dense and annular duality, to determine the relative degree of development. In order to make effective discrimination, some data need to be processed mathematically.Liu Ruqi and others have introduced the method of identification and calculation steps, the calculation is done on the computer, the current