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西秦岭地区广泛分布与硅质岩有关的有色和贵金属矿床,特别是一些大型、超大型铅锌(铜)金矿床,这些矿床的容矿岩石为硅质岩,长期以来大多数学者都认为该类矿床是同生热水沉积矿床。基于前人研究成果,本文重点研究了西成铅锌金矿集区、风太铅锌(铜)金矿集区和大水金矿集区的成矿地质背景、硅质岩与矿化的关系、硅质岩及成矿物质来源、成岩成矿时代、花岗岩与成矿关系、控矿构造和赋矿构造、围岩蚀变等7个方面的地质地球化学特征。认为该类矿床应属后生构造—岩浆—热液矿床。
The West Qinling area is widely distributed with siliceous-related non-ferrous and precious metal deposits, especially large-scale, ultra-large lead-zinc (copper) gold deposits. The ore-hosting rocks of these deposits are silicalites. For a long time most scholars agree that The deposit is a syngenetic hydrothermal sedimentary deposit. Based on the previous research results, this paper focuses on the metallogenic geological background of the Xicheng lead-zinc-gold deposit, the wind-lead-zinc-zinc (copper) gold deposit and the Dashui gold deposit, the relationship between the cherts and mineralization , Geology and geochemistry of the source rocks, the sources of the metallogenic materials, the diagenetic metallogenic epoch, the relationship between granite and metallogeny, the ore-controlling structure and the ore-hosting structure, and the alteration of the surrounding rock. This type of deposit should be considered as a metazoan-magmatic-hydrothermal deposit.