李华,杨恺

• 1:中煤地质工程总公司

摘要(Abstract)：

卡尔古丽金矿区(Kalgoorlie Gold Filed)是西澳大利亚最大的金矿产区,在大地构造上属于西澳伊尔岗(Yilgarn)克拉通东部卡尔古丽绿岩带内。矿区主要出露太古代地层,包括镁铁质-超镁铁质熔岩序列、长英质火山碎屑岩序列,以及一系列侵入的基性-超基性岩脉。区域内的主构造为北北西向,包括一对结构不对称的水平褶皱——卡尔古丽背斜和向斜,以及与向斜西翼平行的Golden Mile断层,主构造被后期走滑断层影响形成的破碎剪切带,是赋存金矿的主要构造。根据控矿构造、矿质来源和沉积时间,可以将金矿脉分为三种类型,分别是Fimiston型、Oroya型和Charlotte型。研究认为,在该地区找矿主要应从围岩、构造、地球物理、地球化学几个方面着手。通过对本区成矿地质特征的分析和研究,新发现了Eureka小型金矿,希望能对中国企业在该地区的勘探投资有所帮助。

关键词(KeyWords)： 金矿;Eureka;地质构造;控矿因素;找矿模式;卡尔古丽

Abstract:

Keywords:

基金项目(Foundation): 国家国外矿产资源风险勘查专项基金支持,项目编号:201130A04100129

作者(Author): 李华,杨恺

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