康定—攀枝花地区花岗岩类定位机制与成矿  

Location Mechanism and Mineralization of the Granitoid in Kangding—Panzhihua Area

作　　者：金明霞[1] 王洁民[1] 高锦曦[2] 

机构地区：[1]中国地质科学院成都地质矿产研究所,610082 [2]国土资源部国际合作与科技司,北京100035

出　　处：《地质论评》1999年第S1期844-850,1194,共8页Geological Review

基　　金：国家自然科学基金(编号49672113)资助项目

摘　　要：康定—攀枝花地区广泛分布的岩浆花岗岩和混合岩化花岗岩,其物源与古元古代康定群结晶基底的重熔有关,两者具有同源和同时性。由于定位机制不同形成了不同的矿产。前者经历了异地侵位、分异演化,在接触带形成了锡钨矿床;后者为原地、半原地定位,未经过分异演化,不利于形成工业矿床,仅在接触带发现一些金矿点和矿化。Magmagranite and migmatized granite are widely dispersed over Kangding—Panzhihua area,their source of mass relates to remelting of the Kongding Group crystalline basement during Paleoproterozoic. Both possessed some common features, such as consanguity and the same geological age. The different location mechanism leads to formation of different minerals. The former formed the Sn-W deposits on the contact zone because it experienced the allochthonous emplacement and differentiation evolutionary process; The latter was unfavourable to formation of deposit because it lacated in the homeland or subautochthonous, and had not experienced the different evolutionary process, so only some gold ore spot and mineralization are found in the contact zone.

关 键 词：花岗岩类 同源同时 不同定位 差异成矿 

分 类 号：P588.121[天文地球—岩石学]