【摘要】 得尔布干成矿带的西南段位于内蒙古自治区的新巴尔虎右旗至满洲里一带,是大兴安岭成矿省内极具找矿潜力的地区。铜、钼、铅、锌、银是该区的主要矿种,区内已发现大型矿床4处,小型矿床和矿点多处,分别形成于燕山早期和燕山晚期这2个主要成矿期,并可划分为3个矿床类型、6个矿床式。燕山早期的成矿元素主要是Cu、Mo、Au,以斑岩型和矽卡岩型矿床为主;燕山晚期的成矿元素主要为Pb、Zn、Ag,以次火山热液型和浅成热液型矿床为主。燕山期隆坳相间的构造格局和超浅成-浅成的中-酸性小岩体,控制着矿床的产出和分布。矿产地集中于燕山期隆坳交接带及其两侧,并形成以隆坳交接带为中心的、与成矿流体温度和盐度降低相伴的不对称分带。文章提出,得尔布干成矿带西南段的找矿潜力主要在隆坳交接带及其两侧,具体为已知矿区的深部及边部、乌奴格吐山—哈拉胜隆坳交接带和甲乌拉—山登脑隆坳交接带的两侧。此外,位于该区西南部的另一个隆坳交接带是潜在的矿化集中区。更多还原

【Abstract】 The southwestern sector of the Deerbugan metallogenic belt in Xin Barag Right Banner Manzhouli region of Inner Mongolia is one of the most promising ore-prospecting areas in the Da Hinggan Ling metallogenic province. Copper,molybdenum,lead and zinc constitute the main ore-forming elements. Four large-size ore deposits and lots of ore spots have been discovered in this region,which were formed in early Yanshanian stage and late Yanshanian stage and can be divided into three deposit types and six deposit styles. The ore deposits formed in the early Yanshanian stage are characterized by copper,molybdenum and gold of porphyry and skarn types,whereas those formed in the late Yanshanian stage by lead,zinc and silver of sub-volcanic and epithermal types. The ore deposits and ore spots in the region are controlled by the tectonic pattern of alternate Yanshanian upwelling areas and depression areas as well as ultra-hypabyssal to hypabyssal intermediate-acid small intrusions. They are concentrated in the connecting zone between upwelling and depression areas and its two sides,forming asymmetric metallogenic zoning with the decline of temperatures and salinities of ore-forming fluids around the connecting zone. The authors point out that the potential prospecting places in the southwestern sector of the Deerbugan metallogenic belt lie in the connecting zones between upwelling and depression areas and their sides,i.e.,in the deep parts and lateral areas of the explored ore deposits and on the sides of the Wulugetushan-Halashen and the Jiawula-Shandengnao connecting zones. In addition,another connecting zone between upwelling and depression areas in the southwestern part of the region seems to be a potential mineralizing concentration area.更多还原