Conclusions are as follows: ① The rejuvenated foreland basins, juxtaposing with peripheral foreland basin and retro-arc foreland basins, should be considered as a main.

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 were formed in the northern orogenic belt.

Dynamic subsidence, another kind of subsidence superposed on flexural subsidence of retroarc foreland basin.;

There are three kinds of fore-land basins classified in terms of origin and location:peripheral foreland basin,retroarc foreland basin and regenerated foreland basin.

Early Permian seismically induced soft-sediment deformational structures in Bogda region, Xinjiang:stratigraphic records of earthquakes in the retroarc collisional foreland basin;