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银山金铜多金属矿床位于赣东北深断裂的北西侧。矿区大面积出露前震旦系双桥山群浅变质岩,其上有零星不整合产出的上侏罗统鹅湖岭组火山碎屑岩—熔岩。矿区褶皱构造主体为双桥山群浅变质岩构成的银山背斜,沿背斜轴部发育一条斜贯全区的剪切带。区内主要发育燕山早期的火山碎屑岩、熔岩、次火山岩及隐爆角砾岩。大量事实表明,该矿床经历了构造动力热液成矿和火山-岩浆热液成矿,两种成矿作用在时间上具同期性,在空间上两者密切相关,构成了构造动力—火山岩浆同步一体的成矿体系。
The Yinshan gold-copper polymetallic deposit is located on the north west side of the deep fault in northeastern Jiangxi. The former Sinian Shuangqiaoshan Group metamorphic rock is exposed in a large area before the occurrence of volcaniclastic-lava of the Upper Jurassic Ehuuring Formation sporadic unconformity. The main fold structure in the mining area is the Yinshan anticline formed by the Shuangshoushan group of shallow metamorphic rocks, and a shear zone is developed along the anticline axis. The area is mainly developed early Yanshan volcanic rocks, lava, sub-volcanic rocks and cryptoexplosive breccia. A large number of facts show that the deposit underwent tectono-hydrothermal mineralization and volcanic-magmatic hydrothermal mineralization. Both metallogenic processes have the same period in time and are closely related in space to form the tectonic-volcanic magma Synchronous metallogenic system.