摘要
牛圈银金多金属矿，华北地洼北缘。成矿条件明显受燕山晚期地洼活动——陆壳伸展运动所形成的断裂构造和火山机构控制。矿床呈隐爆角砾岩筒状，具浅成低温热液型矿床特征。
The Niuquan Silver-gold deposit locats in north margin of North China geodepression The ore formation conditions are obviously controlled by the fault structures and volcanic apparatus, both of them were originated from the activities of geodepression and the movement of continental extension in the late Yanshanian period The occurrence of ore deposit is chimney-like, and is composed of crypto-explosive breccia, and the genesis is of epi-hydrothermal type
关键词
大陆伸展
火山机构
金矿床
银矿床
地质构造
continental extension, volcanic apparatus, crypto-explosive breccia, Niuquan silver-gold deposit, Hebei Fengning
