坦桑尼亚苏库玛兰德绿岩带金矿地质特征及找矿思路  

Geological Characteristics and Prospecting Methods for Gold Deposits in the Sukumaland Greenstone Belt of Tanzania

作　　者：姜高珍[1,2] 李以科[1] 王安建[1] 周朝宪[2] 杨彪[2] 

机构地区：[1]中国地质科学院矿产资源研究所,北京100037 [2]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《地质与勘探》2015年第6期1193-1200,共8页Geology and Exploration

基　　金：国家地质大调查项目(编号:1212011220870和12120114077201)资助

摘　　要：东非维多利亚湖绿岩带区是非洲大陆第三大产金区,其南部的Sukumaland绿岩带具有优越的金成矿地质条件和巨大的金成矿潜力,发育Geita、Bulyanhulu等一系列世界级金矿床。该地区金矿工业类型以绿岩带石英脉型和BIF型为主,成矿受构造、岩浆岩与地层等条件的严格控制。本文以Sukumaland绿岩带南部的Kahama地区为实验区,在理清区域金矿成矿规律和控矿要素的基础上,通过GIS加权叠加的方法利用有限的地质、航磁和遥感数据划分了金成矿有利度。The SukumaLand greenstone belt is located in the south of the Lake Victoria greenstone belt,where is tile third large gold producing area of the African continenll possesses fawrable gold metallogenic conditions and great metallogenic potential,and a serious of world-class gold deposits like Geita and Bulyanhulu.These goht deposits are mainly of the greenstone-hosted quartz-carbonate vein type and iron-formation-hosted vein type, where the goht mineralization is strongly controlled by tectonics,magmatite as well as strata.This paper selects somewhere in Kahama,the southern Sukumaland greenstone belt as an experimental area.After dissecting regional mineralizing regularity and ore-controlling factors,this paper utilizes the weighted superposition method to integrate limited geological,aeromagnetic and remote sensing data,and grades the tavorability of gold mineralization.

关 键 词：坦桑尼亚 苏库玛兰德绿岩带 BIF型金矿 OLI成矿有利度 

分 类 号：P624[天文地球—地质矿产勘探]