沽源盆地大官厂铀钼多金属矿床成矿机理及成矿预测  

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

作　　者：伍静[1] 娄峰[1] 李宏卫[1] 肖成东[2] 樊秉鸿 沈光银 薛清波[2] 

机构地区：[1]中山大学地球科学系,广东广州510275 [2]天津华北地质勘查总院地质勘查总院,天津300181

出　　处：《地学前缘》2011年第1期133-140,共8页Earth Science Frontiers

基　　金：高等学校博士学科点基金项目(20070558033)

摘　　要：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。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 activities of porphyries in the deeper localities under the volcanic rocks.It is also proposed that the upheaval domain of the granitic remelting interface was located at the axial region of the anticline where is suggested to be the optimum locality for porphyry Mo ore prospecting.

关 键 词：重熔界面 铀钼多金属矿床 大官厂 铀钼矿床 

分 类 号：P619.14[天文地球—矿床学] P618.65[天文地球—地质学]