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银山多金属矿床是一个特大型火山—潜火山热液矿床,具有复杂的多期多阶段的成矿作用和有序的成矿分带。成矿作用主要为火山—潜火山热液作用,但在此之前,还经历了一期由韧脆性剪切带形成而引起的动力变质热液作用。根据矿体与3个旋回潜火山岩体的时空关系,火山—潜火山热液成矿作用又可分为两个成矿期和5个成矿阶段。矿床地质地球化学研究表明成矿作用在空间上具有定向迁移的特点,结合流体动力学计算机数值模拟认为定向迁移的根本原因是构造岩浆脉动和隐伏岩体形态产状。笔者认为,矿区深部可能有隐伏岩体,但对隐伏的斑岩铜矿床不应抱很大希望。
The Yinshan polymetallic deposit is a very large volcanic-latent volcanic hydrothermal deposit, with complicated multi-stage and multi-stage mineralization and ordered mineralization zoning. The mineralization was dominated by volcano-subvolcanic hydrothermal fluids, but prior to this, it also undergone a dynamic metamorphic hydrothermal reaction caused by the formation of ductile-brittle shear zones. According to the spatio-temporal relationship between the ore body and the three gyration volcanic rocks, the volcanic-latent volcanic hydrothermal mineralization can be divided into two metallogenic stages and five metallogenic stages. Geological and geochemical studies of the deposit show that the mineralization has the characteristics of directional migration in space. Combined with the fluid dynamics numerical simulation, the fundamental reason for the directional migration is that the tectonic magma pulsation and the shape and shape of the concealed rock mass occur. In my opinion, there may be concealed rock mass in the deep of the mining area, but should not have much hope for the concealed porphyry copper deposit.