投稿时间：2020-02-27
修订日期：2020-08-21
网络发布日期：2020-10-31
中文摘要: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。
Abstract: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 mo-del of this type of deposits. The model suggests that the porphyry copper (molybdenum) deposits are closely rela-ted to the Cenozoic intermediate-acid arc subvolcanic rock system in Sumatra, and are controlled by the NW-trending Sumatra fault and its secondary faults. Based on the geologically favorable factors, the distribution of copper (molybdenum) deposits, and the 1:1 000 000 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.
keywords:geology,quantitative assessment of mineral resources porphyry copper(molybdenum)deposit “three-part” assessment method Sumatra Indonesia
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基金项目:本文得到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）”和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
引用文本：
胡鹏,张海坤,曹亮,程湘,战明国,潘罗忠,戴昱,潘贝红.2020.印度尼西亚苏门答腊岛斑岩型铜（钼）矿产资源定量评价[J].矿床地质,39(5):867~878HU Peng,ZHANG HaiKun,CAO Liang,CHENG Xiang,ZHAN MingGuo,PAN LuoZhong,DAI Yu,PAN BeiHong.2020.Quantitative assessment of porphyry copper（molybdenum）mineral resources in Sumatra, Indonesia[J].Mineral Deposits39(5):867~878
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