从陕甘铅锌生产基地深部找矿的突破看未来找矿潜力
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摘要
陕西凤太矿田和甘肃的徽成矿田都处在同一构造地层区划内,其成矿地质环境相同,二者构成我国陕甘(西北)铅锌重要生产基地。徽县郭家沟铅锌矿的发现,使二者距离缩短为35 km。郭家沟铅锌矿是徽成矿田东部洛坝铅锌矿东延,矿体深埋地下300~800 m,地表多为黄土,厚度几十米,局部有第三系砂砾岩,偶见少量的泥盆系千枚分布。郭家沟铅锌矿的发现,一是地质推断;二是物探电法异常佐证;三是深孔验证。在二矿田之间的甘肃两当县境内多为黄土、第三系砂砾岩和白垩系砂砾岩覆盖,二矿田在深部有可能相连或靠的更近,有很大的探索空间和找矿潜力。
Fengtai ore field in Shaanxi province and Huicheng ore field in Gansu province are located in the same structure and stratigraphic provincialism. Both of them have the same mineralization geological circumstances,and formed the important Lead – Zinc producing base in Shaangan area norwest of China. Since the discovery of Guojiagou lead – zinc mine in Huixian county of Gansu province,shortened the distance between these two ore fields to 35 km. Guojiagou lead – zinc mine is the eastern extend of Luoba lead – zinc mine in the east of Huicheng ore field,the ore body was burried underground 300- 800 m,and the surface was covered by loess with the depth of tens meteres,partly visible the glutenite rock of Tertiary,and occasionally couple with the distributing of few phyllite of Devonian system. The discovery of Guojiagou lead– zinc mine is based on three reasons: the geological deduction,the anormalys verification by the ways of geophysics electrical method,and the deep – hole testing. These two ore fields probably connect with each other or much more closer in the depth. There possess the large exploration space and prospecting potential.
Fengtai ore field in Shaanxi province and Huicheng ore field in Gansu province are located in the same structure and stratigraphic provincialism. Both of them have the same mineralization geological circumstances,and formed the important Lead – Zinc producing base in Shaangan area norwest of China. Since the discovery of Guojiagou lead – zinc mine in Huixian county of Gansu province,shortened the distance between these two ore fields to 35 km. Guojiagou lead – zinc mine is the eastern extend of Luoba lead – zinc mine in the east of Huicheng ore field,the ore body was burried underground 300- 800 m,and the surface was covered by loess with the depth of tens meteres,partly visible the glutenite rock of Tertiary,and occasionally couple with the distributing of few phyllite of Devonian system. The discovery of Guojiagou lead– zinc mine is based on three reasons: the geological deduction,the anormalys verification by the ways of geophysics electrical method,and the deep – hole testing. These two ore fields probably connect with each other or much more closer in the depth. There possess the large exploration space and prospecting potential.
引文
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