甘肃省东狮沟及外围铜金多金属矿地质特征及找矿方向

Geological Characteristics and Prospecting Direction of Copper and Gold Polymetallic Deposits in Dongshigou and its Periphery,Gansu Province

东狮沟地区位于华北地台、塔里木地台、祁连褶皱带三大构造交汇部位,在受挤压隆升的同时,发生大规模的NWW及NW向的推覆走滑,韧性及韧脆性剪切带非常发育,为含矿热液的运移和富集提供了良好的通道和场所。该区中寒武统格尔莫沟群中岩组昌马西湖泉等地发现了沉积变质型磁铁矿、下岩组在鹰咀山等地发现沉积型锰矿。同时还发现了寒山、鹰咀山大型金矿、香毛山铜钴多金属矿床。所以说该层应该是北祁连一带最有前景的铜多金属矿田的主要赋矿层位。

The dongshigou area is located at the three tectonic interchanges of the North China platform, the Tafim platform and the Qilianzhezhou belt. While being squeezed and uplifted, large-scale nww and NW nappe slip, toughness and ductile shear zone are very developed. It provides a good channel and a good place for the migration and enrichment of mineralcontaining hydrothermal fluids. The sedimentary Metamorphic magnetite and the lower rock group found sedimentary manganese ore in Yingzuishan and other places in the middle of the Hanwutonggeermogou group in the area. At the same time, Hanshan, Yingzuishan large-scale gold deposits, Xiangmaoshan copper and cobalt polymetallic deposits were also discovered. Therefore, this layer should be the main ore-bearing layer in the most promising copper and metal ore field in the northern Qilian area.