e,deep- seated,middle- seated and shallow- seated tectonic level.

In the axial zone of the granitic domal extensional tectonics there is mainly outcrop of Mesozoic granitoids,and on its northern and southern sides occurs thick granitic gneiss that has undergone strong ductile shear.

Petroleum plays in rift basins and extensional structures;

Crustal detachment and destruction of the North China craton: constraints from Late Mesozoic extensional structures.;