金在许多早前寒武纪地盾形成的工业富集,可以认为是绿岩带最古的断裂成因构造的标型有用矿物。世界上所有地盾和大陆区内绿岩带实际上都有着同样的构成。通常,在绿岩带底部主要是大量的超基性和基性成分的高镁质和低钾质火山岩层(镁缘岩),数量居次者为火山沉积岩和酸性火山岩。大部分绿岩带剖面可归并为连续的(玄武岩—安山岩—英安岩—流纹岩)和不连续的(玄武岩—流纹岩)钠质拉班玄武岩系建造。在这里所说的次要数量里 The industrial enrichment of gold formed in many of the Early Precambrian shields can be considered as the landmark useful mineral for the oldest fault of the Greenstone Belt. All Earth Shields in the world and the Green Belt in the mainland have virtually the same composition. Typically, at the bottom of the greenstone belt there are a large number of high-magmatic and low-potassic volcanic formations (magmatic rocks) that are predominantly ultramafic and basic in composition, with volcanic sedimentary and acidic volcanic rocks in the highest order. Most of the greenstone belts are profiled as continuous (basaltic-andesite-dacite-rhyolite-rhyolite) and discontinuous (basaltic-rhyolite) Natrium Laban basalts. In the secondary volume mentioned here