| Western Kunlun belt, one of most important polymetallic metallogenic belts in China, is located in the north margin of Qinghai-Tibet plateau, south of Tarim basin where there are lots of mineral resources.Based on the study on the distributing of the intrusions of different stages and two ophiolite belts which were Kudi-Qimanyute and Mazha-Subashi ophiolite belt, make sure the presence of the two oceans. They are North Ocean of Western Kunlun between Tarim massif and middle of Western Kunlun belt and Middle Ocean of Western Kunlun between middle of Western Kunlun belt and south of Western Kunlun belt. The existence of the North Ocean of Western Kunlun is from Mesoproterozoic to Hercynian. Based on age and chemical characteristics of rocks of Subashi ophiolite, Middle Ocean of Western Kunlun was considered as a matured ocean during the period of Hercynian, closed in the end of Indosinian.According to the establishment of the two oceans, it was considered that Western Kunlun orogenic belt has experienced interior and peripheral orogenic stage, and its dynamic evolution is determined:1.the formation of basement in Paleoproterozoic; 2. plate lysis in Mesoproter-ozoic; 3.formation of North of Western Kunlun belt which is Caledonian and Hercynian complex orogenic belt; 4. stage of interior orogen between middle of Western Kunlun belt and south of Western Kunlun during the periods of Indosinian; 5. stage of peripheral orogen south of Western Kunlun belt during the periods of Yanshan and Himalayan. And identified the three western Kunlun tectonic belt: North of Western Kunlun belt is Caledonian and Hercynian composite orogenic belt; Middle of Western Kunlun belt is basement uplift and the granites of Caledonian, Hercynian, Indosinian; South of Western Kunlun belt is Qiangtang block.According to the study, we believe that the main minerals of the Western Kunlun orogenic belt are copper, iron, gold, lead, zinc and precious metals,and the main types of deposits are sedimentary exhalative deposits, medium-low temperature hydrothermal deposits, skarn-type deposits,orogenic gold deposits and so on. The regional metallogenic regularity in Western Kunlun orogenic belt can be summarized that the period of Hercynian and Indosinian were the main ore-forming age. Deposits in Hercynian are mainly Aketasshi massive sulphide copper deposits, Saluoyi massive sulfide copper deposit, Tegelimansu biochemical sedimentary copper deposits, etc. The main deposits in Indosinian are Bandier skarn copper deposit and Seerhong skarn copper iron Mineralization spots. Caledonian and Proterozoic are the second important ore-forming periods.The main deposits in Caledonian are Qieliekeqi and Heiqia siderite deposits which are sedimentary exhalative deposits. In Proterozoic formed Laobing Proterozoic sedimentary Metamorphic iron deposit. The mineralization is weak during the period of Yanshanian. Zonal distribution of ore belt can be divided into Cu, Pb, Zn, Au, Fe metallogenic North of Western Kunlun belt, Cu, Mo, Au, Fe (Co), W, Sn metallogenic Middle of Western Kunlun belt, Fe (Co), Mn, Au, Sb, Ag rare metal metallogenic South of Western Kunlun belt.During the period of writing the paper a lot of fluid inclusions tests were made, using Linkam THSM-600-type cold-hot desk in the laboratory of geological fluids of the college of the Earth Sciences, Jilin University. We got a lot of results of ore-forming fluids homogenization temperature, salinity, density and pressure, and we calculated the depth of mineralization of the typical deposits. The results accumulated large amounts of data for the Western Kunlun orogenic research.Homogenization temperatures of fluid inclusions in the sedimentary exhalative deposits are medium and low(Qieliekeqi 191.6-380℃; Heiqia just 168-176℃). Ore-forming fluid has a high (or moderate) salinity (Qieliekeqi 32.93-34.52% (NaCl); Heiqia just 6.72-11.38% (NaCl)), moderate (or low) density characteristics (Qieliekeqi 1.09-1.1g/cm~3; Heiqia 0.93-0.98 g/cm~3). Ancient water depth was 2.19km (Qieliekeqi), 1.83km (Heiqia).Homogenization temperatures of fluid inclusions in Western Kunlun orogenic gold mineralization plots is low(Paximu 125.1-168.3℃, Yeerqiang 149-165℃), mineralization fluid with low salinity (Paximu 0.87-3.37% (NaCl); Yeerqiang 1.05-1.22 % (NaCl)), low density characteristics (Yeerqiang 0.92-0.93 g/cm~3; Paximu 0.93-0.96 g/cm~3), ore-forming depth is shallow (0.9-1.0km).Homogenization temperature of fluid inclusions in the medium-low temperature hydrothermal deposits which include Kalangu lead-zinc deposit and Busilajin copper-molybdenum mineralization plots is low (Kalangu 160-180℃; Busilajin 148.2-185℃), with moderate to low salinity (Kalangu 1.39-15.55% (NaCl); Bulasijin 6.29-7.30% (NaCl)), and low density characteristics (Kalangu 0.85-1.03 g/cm~3; Busilajin 0.93-0.97 g/cm~3). Ore forming depth is shallow (1.48km).In Western Kunlun orogenic belt, skarn-type deposits are controlled by the Indo-granodiorite and intermediate-acid porphyry and Carboniferous marble. Fluid inclusion homogenization temperature is from 200℃to 240℃. From early to late stage, fluid salinity decreased (0.87 ~ 33.04% (NaCl)); fluid shows low density (0.92 ~ 1.0 g/cm~3), and shallow depth (1.57km).According to the study of U-Pb zircon by LA-ICP-MS, the age of three rocks was respectively determined.1.The age of granodiorite in Seerhong deposit is 240.6±1.4Ma;2. The age of granodiorite in Siruyidieer lead-zinc mineralization plots is12.86±0.88Ma;3. The age of fine-grained granite and diorite in Bujinlasi deposit is 449±2.3Ma and 446±2.1Ma. According to the result of molybdenite Re-Os dating, the age of Busilajin Molybdenum deposit is 434.1±4.6Ma-441.4±2.1Ma.On the basis of the geological studies above, combining with the results of the study of fluid inclusions, and the age of the intrusions and ore in deposits, different genetic types of deposits were determined. Including sedimentary exhalative deposits– Qieliekeqi iron ore deposits and Heiqia iron deposits; skarn-type deposit Seerhong copper iron mineralization plot, biochemical sedimentary deposits– Tegelimansu copper deposit; the hydrothermal vein type deposits - Kalangu zinc-lead deposit and Busilajin copper-molybdenum mineralization plot; orogenic gold deposits -Yeerqiang and Paximu gold mineralization point. In the end, we established the genetic models of different types of deposits.15 TM, ETM + remote sensing images of Western Kunlun orogenic belt were studied in the paper. According to the construction interpretation of remote sensing image, three tectonic belts and the secondary line and ring structures of orogenic belt were divided. By using the software of ENVI and ERDAS to remote sensing image, extraction such as iron mineralization and hydroxyl alteration information are made. And analyses the relationship of structure and exploration, of mineralization-alteration information and exploration.In the end, according to the remote sensing mineralization, alteration, geology geochemical and other comprehensive information, we devided Western Kunlun orogenic belt metallogenic perspective by origin type of the deposits, including 13 A leve prospect areas, 25 B level prospect areas and 21 C level prospect areas. Genesis types include sedimentary exhalative deposits, medium-low temperature hydrothermal vein-type deposits and skarn-type deposits which are related to intrusions, massive sulfide deposit, sedimentary-metamorphic deposits, and so on. The results are as followings: South of Western Kunlun is the best potential prospecting region; the second is North of Western Kunlun; the least is Middle of Western Kunlun.
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