青海省都兰县各玛龙铅锌矿矿床特征与成因研究

Characteristics and Genesis of Various Malong Lead-zinc Deposits in Dulan County of Qinghai Province

研究区大地构造位于东昆仑构造带的南东段,位于“东昆仑”成矿带东段,出露地层主要为上泥盆统牦牛山组(D 3 m),有近东西向及北东-南西向两组断裂构造,矿体产于构造蚀变带中,含矿岩性主要为二长花岗岩,成矿类型属热液型。近东西向的F3各玛龙断裂通过处、岩体侵入接触部位的节理、裂隙间是赋矿最有利的空间,研究结果对以后的地质勘查工作具有重要的指导意义。

The geotectonic structure of the area is located in the southeastern part of east Kunlun tectonic belt.It is located in the eastern part of“East Kunlun”metallogenic belt.The exposed strata is mainly the upper devonian Qiushan Formation(D 3 m),with near-East and northeast or southwest towards two groups of fault structures.The ore body is produced in the tectonic alteration zone,the ore-bearing lithology is mainly monzonitic granite and the ore-forming type is hydrothermal.Near the east-west F3,Malone fault is the place to passes through.The joints of the rock intrusion contact parts and the fissures are the most favorable space for ore mining.The research results have important guiding significance for future geological exploration work.