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河南内乡夏馆—西峡二郎坪一带金矿床(点)广泛分布,成矿类型多样,产出条件复杂,岩体与围岩接触带以及中元古代和早古生代地层中都有金矿形成。根据成矿物质、成矿流体来源和成矿机制,将产于接触带和地层中的金矿体分为5种类型,它们是在火山、火山沉积和正常沉积等不同背景下,由岩浆热液、变质热液或地下水热液叠加改造(再造)形成的,每类矿床都经历了多期多阶段成矿过程,以后期热液交代、充填成矿为主。构造对金矿形成有明显控制作用,区域性深大断裂控制金成矿带,二级韧脆性剪切带控制金矿床分布,三级层间破碎带、断裂裂隙带和接触带构造控制矿体就位。构造热液的叠加改造或再造主导了成矿作用。
The gold deposits in the Xia Hall-Neijiang-Xilixian area of Xixia area are widely distributed, with various metallogenic types and complex output conditions. The gold ore deposits are formed in the contact zone between the rock mass and the surrounding rock as well as in the Mesoproterozoic and Early Paleozoic strata . According to the origin of ore-forming materials, ore-forming fluid and metallogenic mechanism, the gold ore bodies produced in the contact zone and strata are divided into five types. They are formed by volcanic, volcanic and normal deposition, Liquid, metamorphic hydrothermal or groundwater hydrothermal superposition (reconstruction). Each type of ore deposit undergoes multi-stage multi-stage mineralization process, with later hydrothermal replacement and filling mineralization. The structure has a significant control over the formation of gold deposits, the regional deep-seated controlled gold metallogenic belt, the secondary ductile-brittle shear zone controlled gold distribution, the third-level intergranular fractured zone, the fractured fracture zone and the contact zone structure control the ore body Bit. The superposition and remodeling of structural hydrothermal fluids dominated the mineralization.