A review of mineral systems and associated tectonic settings of northern Xinjiang, NW China

摘要: Abstract In this paper we present a review of mineral systems in northern Xinjiang, NW China, focussing on the Tianshan, West and East Junggar Altay orogenic belts, all which are part greater Central Asian Orogenic Belt (CAOB). The CAOB is complex collage ancient microcontinents, island arcs, oceanic plateaux plates, were amalgamated accreted Early Palaeozoic to Permian times. establishment was followed by strike-slip movements affected intraplate magmatism, linked mantle plume activity, best exemplified 250 Ma Siberian Traps 280 Ma Tarim event. there numerous economically important systems. contribution describe selection representative deposits, including subduction-related porphyry epithermal volcanogenic massive sulphides skarn Shear zone-hosted Au lodes may have first formed as intrusion-related subsequently re-worked during deformation. Intraplate magmatism led emplacement concentrically zoned (Alaskan-style) mafic–ultramafic intrusions, many host orthomagmatic sulphide deposits. A huge belt pegmatites orogen, locally hosts world-class rare metal Roll-front, sandstone-hosted U mineralisation completes rich endowment Xinjiang terranes.