Relationship between the Convergency of the Plates Formed in the Jinningian and Caledonian Periods and the Metallogenesis in Qinling Orogenic Zone
Based on field investigation and research of SHRIMP dating and lithogeochemical survey, superimposed conjunction zones of plates formed in two phases of Jinningian period and Caledonian period are evidently present in the hinterland of Qinling orogenic zone. There are two junction zones of plates formed in the Jinningian period by splitting of the middle-Neoproterozoic old Chinese landmass group-archipelagic ocean during ancient Qinling period, in which a quaternity composed by ophiolite, island-arc volcanic rock, plutonic intrusions and epicontinental metamorphic rocks is distinctive to be closed relationship in space-time. Study of the distribution and the relations to regional metallogenesis of the plate convergent zones formed in two phases would provide some new considerations to the regional metallogenesis of iron, chalcopyrite, nickel and cobalt in this area.