西澳太古代后生特征明显的中温热液金矿床,大部分与2.65±0.05Ga发生的海相盆地火山弧系统闭合引起的主要造山运动有关。金通常沉淀富集于绿片岩一角闪岩相特殊的绿岩地体中,受脆性—韧性或脆性构造控制。流体的性质说明,主要是变质成因,尽管也存在地幔成分。 Most of the epithermal hydrothermal gold deposits characterized by the Archean Paleozoic in Western Australia are mostly related to major orogeny caused by closure of the volcanic arc system in the marine basin at 2.65 ± 0.05 Ga. Gold is generally precipitated and enriched in a special greenstone body of greenschist-amphibolite facies controlled by a brittle-ductile or brittle structure. The nature of the fluid shows that it is mainly the cause of metamorphism, although there are also mantle components.