为什么中酸性小岩体成大矿?  

Why Small Granitic Stocks Associate with Giant Mineral Systems?

作　　者：陈衍景[1] 

机构地区：[1]北京大学地质学系,北京100871

出　　处：《西北地质》2012年第4期128-133,共6页Northwestern Geology

基　　金：国家自然科学基金(U1139301);国家973项目(2006CB403500)资助

摘　　要："小岩体成大矿"是对岩浆-流体成矿规律的科学总结,是找矿勘查的重要依据。笔者认为,中酸性小岩体成大矿的原因是在岩浆形成、演化过程中,小岩体比大岩体更容易富集成矿元素,更有利于成矿流体和物质运移,是更有利的成矿物质沉淀储集空间。The view of ＂small intrusions hosting large mineral deposits＂ scientifically summarized the features of magmatic- hydrothermal mineralizations, which has been evidenced to be an effective exploration criterion. However, why the small intrusions generally associate with large or giant mineral systems remain open to study. The author proposes that the small granitic stocks, compared to huge bath- oliths, are favorable for metal enrichment during magma generation and evolution, for fluid migration and metal transportation, and accommodating metal precipitation and accumulation.

关 键 词：中酸性小岩体 矿床 成矿金属 流体运移 

分 类 号：P611.1[天文地球—矿床学]