沽源盆地大官厂铀钼多金属矿床成矿机理及成矿 预测

沽源火山盆地是中国华北地块北缘一条重要的铀钼多金属成矿带--燕辽成矿带的重要组成部分,长期以来受到地学界的广泛关注。由于该带矿床多数产于火山岩中,其成因一直被认为是与火山岩有关的矿床。文中根据花岗岩原地重熔理论及大官厂矿区地质、地球物理资料特征,提出大官厂矿区其下隐伏有花岗岩体,成矿作用主要与隐伏的花岗岩有关;同时分析出本区隐伏花岗岩体的重熔界面隆起部位,指出该位置(背斜核部)是成矿最有利部位,推测可能隐伏有斑岩型钼矿床,为本矿区的找矿指明了新的方向。

Mineralization mechanism of the Daguanchang U-Mo polymetallic deposit and its application in ore prospecting

The U-Mo polymetallic deposits located in the Guyuan volcanic basin in the northern rim of northern China terrain attract more and more attentions of geoscientists in China.The U-Mo polymetallic deposits were considered to have genetic relation to the ore-hosted volcanic rocks.On the basis of the in-situ-melting model of granite origin,together with geologic and geophysical features of the Daguanchang U-Mo polymetallic deposit,it is concluded that the Daguanchang U-Mo deposit was originated from the activit...