东昆仑祁漫塔格地区花岗岩成因类型对成矿作用的控制

Genetic Types of Granite Controlled the Mineralization in Qimantage Area,Eastern Kunlun

祁漫塔格地区位于东昆仑造山带的西段,中酸性花岗岩浆侵入活动强烈,断裂构造十分发育,矿产资源丰富。区内大多数矿产都直接或间接的受花岗岩浆作用控制,笔者利用研究区花岗岩体的成因分类结果,以与加里东期和印支晚期花岗岩浆作用有关的几个典型矿床为例,简要阐述花岗岩成因类型对成矿作用的控制。结果显示,祁漫塔格地区同时期形成的花岗岩体,花岗岩成因类型不同,其所形成的矿产也不同;而不同时期形成的花岗岩体,花岗岩成因类型相同,其所形成的矿产也较接近。加里东期以A型或(A+S)型为主的花岗岩类形成了白干湖-戛勒赛超大型钨锡矿,而同期以I型为主的花岗岩类形成了乌兰乌珠尔铜锡矿。加里东期与印支晚期同以I型为主的花岗岩类,虽然成矿时代不同,却都形成了矿种相近的乌兰乌珠尔铜锡矿和卡尔却卡铜钼矿。

Qimantage area discovering abundant mineral resources lies in the western sector of eastern Kunlun orogenic belt,and neutral-acid granite magmatic intrusion happened frequently,moreover fault structures were well-developed.Most of the deposits in study area are controlled directly or indirectly by granite magmatism in each period.According to the research on granite genetic types,the author has briefly introduced the genetic types of granite rocks controlled the mineralization,for example,several important deposits are respectively related to the Caledonian stage or the late Indo-Chinese stage.The results showed that the granite bodies of the different granite genetic types in the same period were formed in to the different deposit,whereas the granite bodies of the same granite genetic types in the different period were formed the similar deposit.In the Caledonian stage,the A or（A＋S）-type granitoid formed the Baiganhu-Jialesai large-scale W-Sn deposit,however,the I-type granitoid formed the Ulan Uzhur Cu-Sn deposit.In the Caledonian stage and late Indo-Chinese stage,although metallogenic epoch of two deposits are different,yet the I-type granitoid formed both the Ulan Uzhur Cu-Sn deposit and Kaerqueka Cu-Mo deposit.