conquer
发表于 2025-3-28 16:58:06
Introduction,is with the metamorphosed supracrustal volcano-sedimentary series of the greenstone belts. Prominent examples of the greenstone-gold association are known from nearly all of the Archean cratons, including those in South Africa (Barberton Belt), Zimbabwe (Sebakwian and Bulawayan Belts), Ghana (Birrim