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侵入岩中的金矿床多为改造作用形成。赋矿侵入体岩性多样,从超镁铁─镁铁到中性─酸性─碱性成分均有发现。岩体发育在克拉通、克拉通边缘活化带及褶皱带中,其时代从太古宙到燕山期都有发现。其中超镁铁岩─镁铁岩─闪长岩─碱性岩─斜长岩为上地幔或土地幔─下地壳的重熔或混染的产物,中─酸性岩为地壳深部含金火山沉积岩系重熔形成。金矿床有细脉浸染、石英脉、细脉浸染+石英脉等类型。在大岩体中矿床发育在内接触带的断裂系中,而在小岩体内则遍及岩体及其内外接触带。成矿时代主要为燕山期,其次为海西期、太古宙,较少为喜马拉雅期及元古宙,成矿与成岩之间有大的时差存在。成矿物质来自岩体及含金岩系,成矿流体以大气降水及建造水为主。矿床为地质晚期深部热流沿断裂上升加热了浅部的循环水,并从侵入岩及含金岩系中淋出了金再迁移到上部沉积出而形成。
Many gold deposits intruded into rocks are formed by reformation. The ore-bearing intrusions are diverse in lithology and are found from ultramafic-mafic to neutral-acidic-alkaline constituents. The rock mass is developed in the craton, the craton active belt and fold belt, and its age has been found from Archean to Yanshan Period. Among them, the ultramafic-mafic-diorite-alkaline rock-plagioclase is the product of remelting or contamination of the upper mantle or the mantle-lower crust, and the medium-acidic rocks are deep-crust gold-bearing volcanic sedimentary rocks Department remelting formation. Gold deposits are disseminated veins, quartz veins, veins disseminated + quartz veins and other types. In large rock body, the deposit is developed in the fault zone of the inner contact zone, whereas in the small rock body, the deposit is distributed throughout the rock mass and its internal and external contact zones. The main mineralization age is Yanshanian period, followed by Hercynian and Archean, with less Himalayan and Proterozoic, and large time difference between mineralization and diagenesis. The ore-forming materials come from rock mass and gold-bearing rock series, and the ore-forming fluid is dominated by atmospheric precipitation and construction water. The deposit is a deep geothermal late heat flow along the rise of the fault heated shallow water, and from the intrusive rocks and gold-bearing rocks leached gold and then migrate to the upper deposition and the formation.