| Research area is an important Au、Sb metallogenic belt and belongs to the Bayan Har fold belt, which is located in the south of South Kunlun fault in the East Kunlun. The Bayan Har Ocean in south of East Kunlun was closed up during Indosinian, then the whole East Kunlun and its south part had turned to intra-continental stage and the marginal orogeny is complete. The study area has undergone strong crust-mantle interaction in Late Indosinian, and lithospheric delamination and mantle magma underplating are obvious. It reveals that the tectonic regime has transferred from compression to extension. The above tectonic events indicates that the Indosinian is an important tectonic active stage of East Kunlun. The underplating of mass mantle-derived material and its tectonic-magmation activities make the Indosinian become the most important formation stage of hydrothermal deposit in East Kunlun. The formers have carried out different degrees of regional geological survey, mineral survey and regional geochemical and geophysical exploration in the study area, and discovered several primary deposits including Dachang Au and Sb deposit, Jiajilongwa Au and Sb deposit, Dongdatan Sb and Au deposit and Tibet Dagou Au deposit and so on. Because of the terrible natural climate condition in the study area, the researches related to ore-forming process are mainly focus on Au and Sb deposit. The former surveys mostly are large-scale ones with less working precision, so there has not found porphyry copper and other polymetallic deposits, and the Cyprus-type sulphide copper deposit exploration in volcanic rocks has no valuable breakthrough. In addition, the former researches in the study area mostly are single-point work, without a comprehensive study and evaluation for the whole area, so it is difficult to make an objective and correct evaluation for mineralization type and prospecting potential.Based on1:50000regional geology and mineral resources survey in Maerzheng area, through systematic checks for the mining(mineralized) points discovered by the formers and checks for the geophysical and geochemical anomalies, this paper combines structure, strata, magma, and geophysics, geochemistry and remote sensing to study the ore-bearing potential and mineralizing background of the Maerzheng area. Taking the ongoing integrated exploration information into account, this paper has comprehensively analyzed and studied the copper polymetallic mineralizing potential in Maerzheng area.On the basis of preliminary work, the paper comprehensively analyzed the newly discovered mineral (mineralized) points, including3iron mineral (mineralized) points,4copper mineral (mineralized) points,1copper and molybdenum mineralized point,1gold deposit and1gold mineralized point, and1alluvial gold mineral point. Especially, this paper detailed described and analyzed the East Hagetenuoertuo iron and copper mineralized point (K6), Hewuriaguole copper mineralized point (K10), Wusuwuai copper mineral point (K11), East Yamenwulahe copper mineral point (K8), South Yamenwula copper (molybdenum) mineralized point (K9), Shuweimenke iron mineral point (K2) and Shaoriojin gold deposit (K16). The results show that the mineralization is closely related to the Maerzheng Formation. intermediate-basic volcanic rocks, the Early-Middle Triassic Bayankalashan Group turbidite, the Lower Ordovician tonalite and the tectonic fracture zone. Therefore, four mineralizing potential zones in Maerzheng area are initially confirmed, including Miesite-Wulanwula iron, copper (molybdenum) and gold mineralizing zone (Ⅱ1), Wusuwuai copper (cobalt) mineralizing zone (Ⅱ2), Shaoriojin gold mineralizing zone (Ⅰ1), Zhajia tungsten and REE mineralizing zone (Ⅲ2). |
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