Metallogenic Geological Conditions. Xi Kun Position And Metallogenic Model Of The Mississippi Valley-type Lead-zinc Deposits

West Kunlun Mountain Region in Xinjiang(China) is one of the most important metallogenic regions in west China, it will become a new base for mine resource especially for Lead-Zinc mine prospecting.Regional sedimentary (metamorphic) formation, magmatite, tectonic evolution, geophysics field characteristics and regional geochemistry condition have been analysised in order to expound the metallogenic Geological Condition about West Kunlun Mountain Region brilliantly in this paper. Especially considered that Oytage-kurliang fissure basin, as a very important polymetal metallogenic belt in West Kunlun Mountain Region, is the key of the paper. The author chose Lead-Zinc deposits in Oytage-kurliang fissure basin as a main target to research. After detail field inspecting, combined with the deep indoor research result, the author regarded that those deposits, which districted in West Kunlun Mountain Region(such as Tamu, Kalangu), are belong to Mississippi Valley Type Lead-Zinc deposits. Based on all of these, the metallogenic model of these Mississippi valley type lead-zinc deposits have been built up. The regional metallogenic regular pattern and exploration model had been summarized. At last, the dissertation gave a revaluating of Long-rang prospect for Mississippi Valley type lead-zinc deposits in West Kunlun Mountain Region, proposed three long-range prospecting. From all of these researching, some important achievements are acquired as follow:According to the sedimentary (metamorphic) formation, magmatite, tectonic evolution, the geotectonic units of West Kunlun Mountain Region and it's adjacent area are divided into 5 first order units, and subdivided into 6 second-order units, on the basis of these, 7 third-order units are divided in order to show those important polymetal metallogenic belt clearly. The relationship between plate tectonic movement and ore-forming process was revealed.Based on the analysis about the main characteristics of West Kunlun Mountain Region's tectonic evolution stage since the late Proterozoic Era, the author put forward that Rodinia super-continent's merging and dissociation had a profoundly influence during the West Kunlun Mountain Region 's tectonic evolution phase. Oytage-kurliang fissure basin was formed in the end of Permian, it's special tectonic place and special tectonic evolution process supplied favourable conditions to the polymetal metallogenical course in this .Referring himself to some geophysics information, the author made a suggestion that the Indio Continent's jamming together with Europ-Asian Continent was the main force of West Kunlun Mountain Region's grand scale napping and the main characteristics of the regional evolution, pointed out that it was the grand napping and folding that caused grand scale hot brine's moving and cycling, especially the oil field brine blending with deeply fluid that leaded the metallogenic material to precipitate. This new idea not only enriched the metallogenic theory and the metallogenic law's researching, but also gave a guide to the mining respecting and mining scientific research on West Kunlun Mountain Region .After studying on the deposits' geological character and metallogenic tectonic, Some development have been achieved in the relation between the West Kunlun Mountain Region's regional tectonic and Lead-Zinc's metallogenic process. The author regarded that the regional rifts and the second scale rifts had an obviously control function during the metallogenic process of Lead-Zinc deposits in West Kunlun Mountain Region. All of those Lead-Zinc deposits' character,which distributed around the big rifts nearly such as Tamu, Kalangu, Teklyke, had been described detail to readers. This work not only deepened the Lead-Zinc deposits' metallogenic machine and metallogenic process' researching but also pointed out a way for the West Kunlun Mountain Region region's mining respecting.Based on the detail field inspecting information, the law of Lead-Zinc mineralization had been concluded. It shows that the Lead-Zinc mineralizatio...