印度尼西亚苏门答腊岛浅成低温热液型金(银)矿产资源总量预测Quantitative prediction of the undiscovered epithermal gold(silver) mineral resources in Sumatra, Indonesia
赵风顺;华杉;吴昊;张晓军;杨森林;魏译文;
摘要(Abstract):
苏门答腊岛位于印度尼西亚西缘,是环太平洋成矿带的重要组成部分,拥有丰富的铜、金、铅、锌等金属矿产资源,对其资源总量进行评价可以为国家"一带一路"战略决策提供基础数据。在对该区进行野外调查和1∶100万低密度地球化学调查的基础上,分析了小比例尺尺度下浅成低温热液型金(银)矿床的地质特征、关键控矿因素和找矿标志,构建了该类金(银)矿床的预测模型;认为该区NW向苏门答腊大断裂及其次级断裂与新生代岛弧岩浆岩具有密切的时空耦合关系,该断裂系统和新生代岩浆岩共同控制浅成低温热液型金(银)矿床的产出;已知金(银)矿床点和1∶100万低密度地球化学异常可以作为快速圈定研究区有利找矿地段的标志;并据此圈定成矿远景区5个,其中A级成矿远景区3处,B级成矿远景区2处;然后,利用通用密度模型预测了不同概率下的各远景区未知矿床数,并运用蒙特卡罗模拟预测了苏门答腊岛浅成低温热液型金(银)矿产在不同概率下的金(银)资源量。
关键词(KeyWords): 资源总量预测;浅成低温热液型金(银)矿床;“三步式”评价方法;苏门答腊岛;印度尼西亚
基金项目(Foundation): 中国地质调查局项目(DD20160114)
作者(Author): 赵风顺;华杉;吴昊;张晓军;杨森林;魏译文;
Email:
DOI: 10.19509/j.cnki.dzkq.2021.0107
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