福建上杭紫金山铜金矿床控岩控矿构造分析  

Discussion on the Rock-and Ore-Controlling Structures of the Zijinshan Copper-Gold Deposit in Shanghang County, Fujian Province

作　　者：陶建华 许春林 

机构地区：[1]闽西地质大队

出　　处：《福建地质》1992年第3期186-203,共18页Geology of Fujian

摘　　要：紫金山铜金矿床的形成与构造作用关系十分密切。NE向构造控制了燕山早期花岗岩的展布,NE与NW向构造结点控制了紫金山火山机构以及中酸性浅成—超浅成岩体。隐爆角砾岩受NW向断裂、裂隙带控制。紫金山矿区的石英-绢云母蚀变主要受区域构造—岩浆活动的控制。石英-地开石、石英-明矾石蚀变与次火山热液作用有关,主要受NW向断裂和裂隙密集带控制。紫金山矿区的铜金矿化带和矿体明显受断裂构造、火山构造的双重控制。成矿作用以裂隙充填-交代方式为主,含矿裂隙带在走向和倾向上皆呈右行侧列。紫金山矿床的铜金成矿活动与燕山晚期的火山-构造活动有关。The formation of the Zijinshan copper-gold deposit is closely relationship with the geological structures in the Zijinshan area. In the mining area,the NE trending structures control the distribution of early-Yanshanian granite, while the juncture of the NE and NW trending structures control the volcanic apparatus and intermediate-acid hypabyssal and sub-hypabyssal rock masses. The cryptoexplosive breccia is also controlled by the NW trending fault and fracture belts. The quartz-sericitizational alteration is mainly controlled by the regional tectonics and magmatic activity. The alteration of quartz-dickitization and quartzalunitization has a relation to the sub-volcanic hydrothermalism and is controlled by the concentrated NW trending fault and fracture belt. The copper-gold mineralization belt and orebodies in the Zijinshan mining area are obviously controlled by both fault structures and volcanic structures. The fracture filling and metasomatism are dominant in the ore-forming process. The strike and dip of ore-bearing fracture belts are right-lateral.Therefore, the coppergold mineralization of the Zijinshan copper-gold deposit has a relation to the late-Yanshanian volcanic and tectonic activities.

关 键 词：铜金矿床 NW向断裂 蚀变 控矿构造 交代 燕山晚期 火山构造 裂隙带 矿区 矿体 

分 类 号：P618.51[天文地球—矿床学] P624.7[天文地球—地质学]