摘要
本文总结了近年来关于韧性剪切带与金矿关系研究的地质成果。根据金矿床与韧性剪切带的时空关系、含矿热液来源、金矿体的地质产状及矿化特征,作者将产于韧性剪切带内的金矿床划分为三个大的类型和六个亚类型,即Ⅰ型(Ⅰa型和Ⅰb型)、Ⅱ型(Ⅱa型和Ⅱb型)、Ⅲ型(Ⅲa型和Ⅲb型)金矿床。提出了每种类型金矿床的找矿标志及应重视产于前寒武纪变质岩区韧性剪切带内Ⅰ型金矿的找矿工作,尤其应注意寻找与围岩界线不清,不易识别的Ⅰa型金矿床。
Based on the relationship between gold deposit and ductile shear belt, the origin of ore--bearing hydrothermal, the occurrence of gold orebodies and mineralization cha- racters, gold deposits in ductile shear belt can be divided into 3 types and 6 subtypes, namely, Ⅰ--type (I_a -- and I_b --subtype), Ⅱ--type (Ⅱ_a -- and Ⅱ_b --subtype), Ⅲ--type (Ⅲ_a -- and Ⅲ_b --subtype) gold deposits. Each exploration targets for different types of gold deposits is presented. During the exploratory work Ⅰ--type gold deposit in ductile shear belt of metamorphic zone in Pre--Cambrian should be pay more attention to, especially Ⅰ_a--subtype which is difficult to distinguish.
关键词
剪切带
金矿
矿床
类型
找矿标志
Ductile shear belt Gold deposit types Geological charactcr Exploration target