【摘要】 大兴安岭北段是我国重要的金、铜、铅、锌等多金属成矿区之一。矿床具有北东成带、北西成行的分布特征。成矿作用主要集中在燕山晚期,与燕山晚期火山岩、次火山岩具有内在的成因联系。东西向、北东-北北东向断裂构造是主要的容矿构造,多组断裂构造的交汇部位是矿化的有利部位。成矿物质以深源为主,有部分地壳物质的加入。根据区域成矿特点及成矿条件划分2种成矿类型、3个成矿带,建立了多金属矿床的成矿模型。更多还原

【Abstract】 Northern Daxing’anling Mountain is one of the most important regions for gold multimetal metallognesis. Mineral deposits in this area are distributed in belt with northeast direction and in row with northwest direction. The mineralization culminated in the later of Yanshan period, and the origin of deposits is closely associated with volcanic rocks and subvolcanic rocks. The faults in east-west or northeast direction are the main orebearing structures. The intersections of faults with different direction are the favorable sites for mineralizations. The mineralization materials mainly come from deep resources and a little from upper crust. Based on the mineralization characteristics and oreforming conditions, the metallognetic types could be classed into two types, and three metallognetic zones. The regional metallognetic model is establishied in the paper.更多还原