The studies of mineralogy

geochemistry and isotope show that Qiaogashan granite derived from the sedimentary strata remelting and deforming due to the late Palaeozoic intracontinental subduction

layer slip

nappe

etc. in East Tianshan mountain. The stock was influenced by the late period strong ductile shearing

and also reacted by fluid rock reaction obviously. The forming

evolution of the stock and the effect of later geological event are associated with the formation of gold deposit in this area.