摘要
江南型金矿系指产于江南古岛弧带元古界浅变质岩系中的层控金矿床,在成因上属变质热液和地下水渗滤热液之间的过渡类型。其成矿物质主要源于含金建造,成矿能量来自雪峰期和加里东期运动以及由此触发的地下热水活动。在总结该类型金矿主要地球化学特征的基础上,提出了江南型金矿“源—运—储”的综合成矿模式。
By Jiangnan- type gold deposits are meant the stratabound gold depositshosted by the Proterozoic low-grade metasedimentary sequence of Jiangnanancient island arc Belt. They should be classified into the transitional genetictype between metamorphic fluid and infiltrating geothermal water. Their ore-forming materials should mostly come from gold-bearing formations and majormetallogenic energy should be supported by Xuefengian and Caledonian tectonicmovements and the associated geothermal water system. Present paper sumsup their principal geochemical characteristics and advances a comprehensivegenetic model of 'source -transportation-concentration' for Jiangnan-type golddeposit.
基金
国家自然科学基金
关键词
金矿
矿床
成矿作用
地球化学
gold deposit
metallogenesis
geochemistry
Proterozoic Erathem
South China/gold-bearing formation
