江西银山金、铜多金属矿床构造动力-火山岩浆同步一体成矿热结构模式

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。

THERMAL STRUCTURAL MODE CONCERING TECTONO DYNAMIC VOLCANO MAGMATIC SYNCHRONIC METALLOGENISIS OF YINSHAN Au Cu POLYMETALLIC ORE DEPOSIT,JIANGXI PROVINCE

Yinshan Au Cu polymetallic ore deposit is situated on the NW side of NE Jiangxi deep fracture zone.Weakly metamorphised rocks of Shuangqiaoshan Group of Presinian period are widespread in the mine area,which is discordantly overlaid by scattered volcaniclastic rocks and lavas and of Ehuling Group of Upper Jurassic System.Yinshan anticline is the main fold in the area and consists of weakly metamophic rocks of Shuangqiaoshan group.Along the anticlinal axis there is a brittle ductile shearing zone,10KM in NE direction in length,tens to hundreds of meters in width.The igneous rocks are dominantly volcaniclastic rocks,lavas,subvolcanic rocks and cryptoexplosion breccias of Early Yanshan period.There are 3 cycles of volcano magmatic activity.A lot of geological facts indicate clearly that Yinshan Au Cu polymetallic ore deposit underwent two metallogenic stages:tectono dynamic hydrothermal metallization and volcano magmatic hydrothermal metallization.Two kinds of metallogenesis are basically contemporaneous and closely correlative with each other in space and in origin,they constitute a tectono dynamic volcano magmatic metallogenic system.