东昆仑乌斯托铜多金属矿成矿特征及找矿前景

Metallogenic Characteristics and Prospect of Wusituo Cu-polymetallic Deposit in East Kunlun

乌斯托铜多金属矿位于秦祁昆中央造山带西段,东昆仑复合造山带东段之东昆仑古生代—早中生代复合造山带。区内古老变质岩系发育,华力西期、印支期构造岩浆活动频繁、强度大,构造作用较复杂,成矿作用类型多样,化探、物探异常广布,区域内已有多处成矿事实存在,为青海省重要的成矿区带和战略矿产资源勘查地。迄今为止,区域上已发现的矿产种类有金、铁、铁铜、铅锌、银多金属、铜、钴及非金属矿产等。区内通过工作已发现多处矿(化)带。以矿区HS32号异常为例,通过对已发现矿带的成矿地质特征进行分析,认为成矿与闪长岩大理岩及断裂构造关系密切,该区具备寻找热液型铜矿、构造蚀变岩型金矿和矽卡岩型多金属矿的潜力,找矿前景良好。

Wusituo Cu-polymetallic deposit is located in the two sections of the centrel orogenic of the Qingling Qilian and Kunlun mountains,and the Paleozic-Earty Mesozic composite orogen of the east sector of East kunlun compsite orogen.In the area,the ancient metamorphic rocks is growth,the variscan-indian stage megmatic activity is frequent and strong,tectonic movement is complicated,metallogenic types are diverse,geophysial and geochemical exploration exist extensively.There are many metallogenic facts existed.It is an important minerlization belt and exploration area of strategic mineral resources in Qinghai Province.So far,gold,iron,iron-copper,lead-zinc,Ag-polymetallic,copper,cobalt and nonmetallic minerals have been found in the region.Taking HS32 anomaly area of the mining area as the study example,through geological work,the multiple mineralized zones are found in the study area.Through the analysis of the metallogenic geological characteristics of the mineralized zones already found in the study area,the results indicated that the mineralization is closely related to diorite marble and fault structure,the area has the potential to search hydrothermal copper,tectonic altered rock type gold deposits and skarn type polymetallic deposits.