峨眉火成岩省成矿效应初探  

PRIMARY DISCUSSION ON ORE-FORMING EFFECT OFEMEI IGNEOUS PROVINCE

作　　者：张成江[1] 刘家铎[1] 刘显凡[1] 阳正熙[1] 李佑国[1] 吴德超[1] 

机构地区：[1]成都理工大学,四川成都610059

出　　处：《矿物岩石》2004年第1期5-9,共5页Mineralogy and Petrology

基　　金：教育部重点项目"峨眉火成岩省成矿效应及找矿方向研究";中国地质调查局项目"扬子地台西南缘成矿规律及找矿方向综合研究

摘　　要：　峨眉地幔柱活动是扬子地台西南缘最大的一次构造 岩浆热事件,峨眉火成岩省也是一个大的成矿省,对该区的成矿起着非常重要的控制作用,除形成著名的Fe Ti V(PGE)等亲地幔元素的岩浆 热液矿床外,更重要的是引起了强烈的壳幔相互作用,造成大区域尺度的异常高热流场,对地壳成矿流体的形成、循环、演化起了重要的促进作用,形成遍布扬子地台西南缘及邻区的Au,Ag,Pb,Zn,Hg,Te,Sb,Se等热液 热液改造型矿床。不同岩相有不同的成矿专属性,由于不同的构造背景对不同岩区玄武岩的形成演化和地质地球化学特征及其成矿作用的影响,成矿总体显示出明显的分带性。Activity of Emei mantle plume is the most obvious tectonic and magma-heat event in the southwest edge of Yangtzi platform. Emei igneous province is also a large ore-forming province and plays an important role in the ore formation of that area. Besides forming the famous magma-hydrothermal ore deposit of Fe-Ti-V (PGE) and other pro-mantle elements,it also causes violent interaction of crust and mantle, forming extremely hot stream field in a large area, accelerating the formation, circulation and evolution of crust ore-forming fluid, and forming the hydrothermal-hydrothermal reforming ore deposits of Au, Ag, Zn, Hg, Te, Sb, Se etc.in the southwest edge of Yangtzi platform and neighboring area. Since different rock phrases have different ore-forming attributes and different tectonic backgrounds have different influence on the formation, evolution, geologic and geochemical characteristics, and ore formation of basalt in different rock areas, ore formation displays obvious zonation characteristics on the whole.

关 键 词：地幔柱活动 峨眉火成岩省 成矿效应 矿床成因 构造岩浆热事件 

分 类 号：P588.1[天文地球—岩石学]