美国阿拉斯加金矿资源特征及远景区预测  

Gold Resource Characteristics and Prospective Area Prediction in Alaska,USA

作　　者：余石勇 赵元艺[1] YU Shiyong;ZHAO Yuanyi(Institute of Mineral Resources,Chinese Academy of Geological Sciences,MNR Key Laboratory of Metallogeny and Mineral Resources,Beijing 100037)

机构地区：[1]中国地质科学院矿产资源研究所,自然资源部成矿作用与资源评价重点实验室,北京100037

出　　处：《地质与勘探》2020年第6期1296-1304,共9页Geology and Exploration

基　　金：中国地质调查局项目“境外大型矿产资源基地及资源潜力评价”(编号:DD20190437)资助。

摘　　要：阿拉斯加位于北美洲西北部,是美国最大的州,经历了约2亿年的地质构造演化,具有丰富的矿产资源,尤其是以岩金为主的黄金资源。中国学者对阿拉斯加地区研究较少,中文资料匮乏。通过研究,为保护中国黄金资源和推动中国企业在阿拉斯加“走出去”战略提供了基础资料。分析已有资料发现,阿拉斯加金矿资源主要分布在东南部、西南部、中南部、中部和西部地区。金矿类型分为造山型、深成岩体型、侵入相关型、石英脉型、砂金型。通过分析阿拉斯加地质资料确定了4个远景区,由2个Ⅰ级远景区、1个Ⅱ级远景区和1个Ⅲ级远景区组成。建议中国企业关注Ⅰ级远景区。阿拉斯加金矿资源可利用性评价良好,值得中国企业关注。Alaska is located in northwest North America,and is the largest state of the United States.With about 200 million years of geological evolution,Alaska hosts rich mineral resources,especially gold resources dominated by rock gold.Previous studies on Alaska are few,with rare Chinese literature relevant to its gold resources.This paper provides basic information on this issue to protect Chinese gold resources and promote Chinese enterprises to“go out”to Alaska.Data suggests that the gold deposit resources of Alaska are mainly distributed in the southeast,southwest,middle south,central and western regions.These gold deposits can be attributed to several types such as orogenic,plutonic,intrusion-related,quartz vein and placer gold types.The four potential regions can be determined by analysis of geological data from Alaska,which are two class I,one classⅡand one classⅢprospects.It is suggested that Chinese enterprises should focus on classⅠprospect.Overall,the evaluation of gold deposit resource availability is well in Alaska,which is worthy of Chinese enterprises attention.

关 键 词：金矿 资源潜力 可利用性研究 远景区 阿拉斯加 

分 类 号：P618.51[天文地球—矿床学]