Metallogenic Systems of Polymetallic Copper and Gold Deposits and Related Metallogenic Geodynamic Model in Eastern Tianshan, Xinjiang

In the past several years, a number of copper, gold and Cu Ag Pb Zn deposits have been discovered and explored in the eastern Tianshan area, Xinjiang. All of the metallic deposits are spatially and densely distributed within the Devonian Late Carboniferous island arc in the north and Carboniferous island arc in the south along the Kangguer Huangshan Carboniferous Permian suture large scale shear zone. These deposits,formed temporally in Carboniferous Permian, can be grouped into gold deposit system comprising epithermal, orogenic and quartz vein types, copper deposit system, porphyry, skarn and hydrothermal vein types, and Cu Ni sulfide system. The three metallogenic systems are genetically associated with the emplacements and eruptions of mafic ultramafic or intermediate felsic magmas during the subduction and extension of post collision of the plates.