印度尼西亚苏门答腊岛斑岩型铜(钼)矿产资源定量评价  

Quantitative assessment of porphyry copper(molybdenum)mineral resources in Sumatra,Indonesia

作　　者：胡鹏[1] 张海坤[1] 曹亮[1] 程湘[1] 战明国 潘罗忠 戴昱 潘贝红 HU Peng;ZHANG HaiKun;CAO Liang;CHENG Xiang;ZHAN MingGuo;PAN LuoZhong;DAI Yu;PAN BeiHong(Wuhan Center,China Geological Survey,Wuhan 430205,Hubei,China;Guangxi Bureau of Geology and Mineral Prospecting and Exploitation,Nanning 530023,Guangxi,China;China-Asian Geoscience Cooperation Center(Nanning),Nanning 530023,Guangxi,China;Regional Geological Survey Institute of Guangxi Zhuang Autonomous Region,Guilin 450304,Guangxi,China)

机构地区：[1]中国地质调查局武汉地质调查中心,湖北武汉430205 [2]广西壮族自治区地质矿产勘查开发局,广西南宁530023 [3]中国东盟地学合作中心,广西南宁530023 [4]广西壮族自治区区域地质调查研究院,广西桂林450304

出　　处：《矿床地质》2020年第5期867-878,共12页Mineral Deposits

基　　金：中国地质调查局地质调查项目“印度尼西亚苏门答腊岛铜多金属资源潜力评价(编号:DD20160114)”;广西壮族自治区地质矿产勘查开发局地质勘查基金项目“广西与东盟特提斯构造过程与大规模成矿作用对比研究(编号:桂地矿外任[2018]1号)”联合资助。

摘　　要：应用“三步式”矿产资源定量评价方法,在对苏门答腊岛典型斑岩型铜(钼)矿床成矿特征进行分析基础上,构建该类铜(钼)矿床的描述性模型,认为该区斑岩型铜(钼)矿床与苏门答腊岛弧新生代中酸性次火山岩系关系密切,NW向苏门答腊断裂及其次级断裂起到控岩控矿的作用;结合该区已知铜(钼)矿床(点)分布及1∶100万低密度地球化学测量成果,圈定了4处铜(钼)成矿远景区;根据密度模型公式估算出该区在90%、50%和10%预测概率下的矿床数;利用蒙特卡洛模拟方法预测该区斑岩型铜(钼)矿产在不同预测概率下的铜(钼)资源量,结果显示苏门答腊岛斑岩型铜(钼)矿产资源潜力巨大。Using the method of“three-part”quantitative assessment,the authors analyzed the metallogenic characteristics of typical porphyry copper(molybdenum)deposits in Sumatra,Indonesia,and constructed a descriptive model of this type of deposits.The model suggests that the porphyry copper(molybdenum)deposits are closely related to the Cenozoic intermediate-acid arc subvolcanic rock system in Sumatra,and are controlled by the NWtrending Sumatra fault and its secondary faults.Based on the geologically favorable factors,the distribution of copper(molybdenum)deposits,and the 1∶1000000 low-density geochemical survey,the authors delineated four copper(molybdenum)prospective areas.According to the density model formula,the number of undiscovered deposit was estimated under the prediction probability of 90%,50%,and 10%respectively,and the copper(molybdenum)resources of porphyry copper(molybdenum)deposits were estimated by Monte Carlo simulation method under different probabilities.The assessment shows that Sumatra has a large potential of copper(molybdenum)resources of the porphyry copper(molybdenum)deposits.

关 键 词：地质学 矿产资源定量评价 斑岩型铜(钼)矿 “三步式”评价方法 苏门答腊岛 印度尼西亚 

分 类 号：P618.41[天文地球—矿床学] P618.65[天文地球—地质学]