白银市郝泉沟金矿控矿因素及找矿标志

Ore-controlling Factors and Prospecting Indicators of the Baiyin Haoquangou Gold Deposit

郝泉沟金矿大地构造位置处于北祁连加里东褶皱带东段中部火山岩带上,黑石山复式背斜的南翼、白银厂-二道湾-石青硐深大断裂的北部,其南为中祁连隆起带,北为阿拉善地块,具有多旋回的构造特征,构造样式多样,在早古生代经历了裂陷拉张而后又挤压成弧的构造演化过程,认为本区是一个早古生代火山弧-海沟体系的残体,属白银火山弧残体的组成部分之一。

The tectonic structure of the Haoquangou gold deposit is located on the central volcanic rock belt in the Caledonian fold belt in North Qilian,the southern wing of the Heishishan compound anticline,and the north part of the Baiyinchang-Erdaowan-Shiqingdong deep fault.There is a middle Qilian uplift belt in the south and an Alashan block in the north.It has the tectonic feature of polycycle and various tectonic styles,having experienced the tectonic evolution process of rift extension and then arc formation in the early Paleozoic.It is considered that this area is a remnant of an early Paleozoic volcanic arc-trench system,which is one of the components of the Baiyin volcanic arc remnant.