辽宁瓦房店金刚石矿集区区域成矿控制条件及资源潜力预测

瓦房店地区是我国金刚石矿主要矿集区.金伯利岩浆侵入活动主要受超岩石圈郯庐深断裂控制.有利于岩体赋存的部位是基底东西向构造发生继承性活动形成的北东东向断裂.该两组断裂联合控制了区内金伯利岩体群沿北北东方向成排、沿北东东方向呈带的空间分布规律.由于北东东向断裂活动强度的差异,Ⅰ、Ⅱ、Ⅲ号金伯利岩带由北向南呈现了岩体数量渐少...

THE REGIONAL ORE-CONTROLLING CONDITIONS AND PREDICTION OF RESOURCES POTENTIAL OF THE DIAMOND CONCENTRATED DISTRICT IN WAFANGDIAN, LIAONING PROVINCE

Wafangdian area in Liaoning Province is a significant diamond concentrated district in China.The intrusion of kimberlitic magma is controlled by the deep translithospheric Tan-Lu fault.The NEE-trending faults formed by the posthumous movement of E-W-trending structure in the basement are favorable positions for the rock bodies.The combination of both structures controls the distribution of kimberlite rock bodies.Because of the different active strength of the NE fault,the kimberlite belts display a decreasing trend from north to south in the amount,scale and ore content of rock bodies.Based on this,it is concluded that there exists 1 or 2 kimberlite belts in Beiwawo-Songshuzhen.A great potential of primary diamond resources is predicted in this area.In addition,it is estimated about 30 million carat diamond formed in placer by denudation.Therefore,the diamond resources in Jurassic-Quaternary strata are also promising.