Evolution and Geodynamics of basin/Mountain Systems in East Qinling-Dabieshan and its Adjacent Regions

Controlled by collision between continental blocks and intracontinental deformation, different basin-mountain systems were developed along East Qinling-Dabieshan orogenic belt. Response to arc-continent collision and its later intracontinental deformation between North Qinling and North China plates, the hinterland thrust and retro-arc foreland basin system was formed in the northern orogenic belt. Driven by obliquely subduction of the Yangtze plate under the Qinling plate and intracontinental deformation of the collided Yangtze plate associated with clockwise rotation of the Yangtze plate relative to the North China plate, the foreland thrust and peripheral foreland basin system was developed in the northern Yangzte. During latest Jurassic to Cretaceous, the shortening and extension events overlapped in the orogen, and it extended from the core to margins. A collapse structure and E-W trending rift basin system was formed. Since mid Eocene the main basin bounding faults were transverse to the orogen, which were controlled by E-W trending extension in East China circum Pacific belt and deep tectonism.