青海南戈滩—乌龙滩地区多金属地质特征与找矿潜力

Metallogenic Geological Characteristics and Prospecting Potential of Nangetan-Wulongtan Multi-metal Ore in Qinghai Province

南戈滩—乌龙滩地区位于不同构造单元交接处,岩浆活动强烈,印支期岩浆活动规模最大,且与矿化关系最为密切。构造格局复杂,区域受近EW、NW向断裂带的影响明显。本区经历了多期次构造和岩浆作用的叠加,为形成多矿种和多成因类型矿床的叠生或共存提供了有利的动力学背景条件。金属矿床(点)广泛分布,是青海省内重要矿化聚集区。已发现矿床有10余处,以接触交代矽卡岩型、接触交代—热液型、喷流—沉积型矿床成因类型为主,但本地区工作程度仍显较低。通过分析成矿地质背景和矿床地质特征,认为在南戈滩—乌龙滩地区寻找多金属矿床有很大空间。

The area of Nangetan and WuLongtan are located in the joint of different tectonic units,the magmatic ac-tivity was strongest in Indo Chinese epoch and close with mineralization process.The structural framework was com-plex,this area was greatly affected by nearly EW and NW fracture belt.This area undergone multi-stage tectonic and magmatic superposition,providing favorable dynamics background conditions for the coexistence and diplogene of multiple mineral commodity and many genetic type minerals,The metal deposits are widely distributed,which is an important gathering mineralization area in Qinhai Province,we have found mineral deposits more than ten.The genetic type was contact metasomatism skarn,hydrothermal and exhalitive-sedimentary types,but this area is still in low degree of work.Analyzing the ore-forming geological background and geological features of deposit,we think it has large space to find multi-metal deposit in Nangetan and Wulongtan area.