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    西藏甲马—驱龙矿集区成矿远景

    Ore and ore resource prospects of the Jiama-Qulong ore concentration area, Tibet

    • 摘要: 提要:西藏甲马—驱龙矿集区长约124km,宽69km,位于冈底斯陆缘火山-岩浆弧(中—晚侏罗—古近系)的中东部。通过最近的地质调查、矿床勘查和研究,发现冈底斯陆缘火山-岩浆弧带内存在多个矿集区,其中甲马—驱龙矿集区是该弧内一个重要铜多金属矿集区之一。该矿集区的矿床以正在开发的大型甲马铜多金属矿床为代表,还发现了驱龙南、驱龙北、底日玛、松多雄、拉抗俄和象背山等一批非常有潜力的矿床和矿(化)点。它们的矿化类型独特,成因类型多样,是冈底斯陆缘火山-岩浆弧演化过程不同阶段的产物。这些不同类型的矿床集中在一定的区域,已初步显示并成为冈底斯陆缘火山-岩浆弧带内极具成矿潜力、并有一定成矿远景的重要矿集区。相信通过今后进一步工作,该矿集区有望成为中国西部又一个有色金属矿产资源基地。

       

      Abstract: Abstract: The Jiama-Qulong ore concentration area, Tibet, 124km long and 69 km wide, is located in the east-central part of the Mid-Late Jurassic-Paleogene Gangdise continental-margin volcanic-magma arc. Through recent geological survey, mineral exploration and ore deposit study, the authors found several ore concentration areas in the Gangdise continental-margin volcanic-magma arc, of which the Jiama-Qulong ore concentration area is one of the important copper polymetallic ore concentration areas in the arc. The deposits of this area are represented by the large Jiama-Qulong copper polymetallic ore deposit which is being exploited. In addition, they also found a number of very promising deposits and mineralization occurrences such as Oulong South, Oulong North, Dirima, Songduoxiong, Lakang'e and Xiangbeishan. They are characterized by unique mineralization types and a variety of genetic types, suggesting that they are products of different stages of evolution of the Gangdise continental-margin volcanic-magma arc. These different types of deposit are concentrated in a certain areal extent and have primarily shown and formed an important ore concentration area with great ore potential and a certain ore prospect in the Gangdise continental-margin volcanic-magma arc. The authors believe that through further work this area is expected to become another nonferrous mineral resource base in western China.

       

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