扬子地块西南缘微细浸染型金矿矿床地质特征及构造环境  

Geological feature and structure environment of micro-fine disseminated gold deposit in the southwest edge of Yangtze block

作　　者：徐耀鉴[1] 吴铁平[2] 

机构地区：[1]中南大学 [2]湖南工程职业技术学院

出　　处：《黄金》2008年第5期18-21,共4页Gold

摘　　要：通过对扬子地块西南缘滇、黔、桂三角区微细浸染型金矿床的控矿构造、矿化蚀变等特征以及矿床空间分布规律、成矿时代的分析研究,认为区内的微细浸染型金矿床主要形成于燕山期地壳挤压作用为主的构造背景下,地体边界间的挤压、拼贴是造成该区金活化、迁移,并最终在扬子地块边缘富集成矿的主要原因。By analyzing the ore controlling structures, mineralizing alteration characteristics, the law of deposit spatial distribution and metallogenetic epoch of micro-fine disseminated gold ＇deposit in the southwest edge of Yangtze block, it is revealed that this type of deposits mainly formed in the background of earth crust, squeezing action in Yanshan Stage. The crustal boundary extrusion and collage was the leading cause of gold activation, transference and metallogenic enrichment.

关 键 词：扬子地块 微细浸染型金矿床 矿床特征 构造环境 

分 类 号：P618.51[天文地球—矿床学]