甘肃白银露天矿小型构造的初步解析

来源期刊：中南大学学报(自然科学版)1983年第2期

论文作者：段嘉瑞

文章页码：98 - 104

关键词：小型构造； 露天矿区； 折劈理； 甘肃白银； 加里东褶皱； 破劈理； 构造形迹； 剪节理； 交面线理； 变质作用

摘    要：白银露天矿区小型构造十分发育,类型繁多,计有小褶皱,流劈(片)理、折劈理、破劈理、扭折、剪节理及拉长线理、皱纹线理等透入性构造。据初步解析可划分为二幕三期,均属加里东构造旋回。各变形期的构造样式、动力学特征、热流值、应变相及变质作用等都有一定的规律。研究这些规律,对于解决白银地区区域构造和成矿规律等方面都有实际意义。

Abstract: There are various types of minor structures occurring in the Baiyin Open-pit Mine, Gansu. According to the deformation succession of the structures,it may be subdivided into two main phases and three subordinate stages,and all of them belong to the Caledonian cycle. For all the stages, the stylesof structure, dynamic characteristics, heat-flow values,strain-facies and meta-morphism that have been found in the minor structures,reveal certain regu-larities.