关键词: 华北, 上地幔, 对流, 底辟, 盆地构造

Abstract: Based on comprehensives analysis of deep structure, formation of Cenozoic basin and its dynamical characteristics, the formation mechanism of the basin and its relation to movement of the upper mantle in the eastern part of North China are discussed in this paper. The experimental study have been carried out using the centrifugal technique, in which the differential density of material is adopted instead of differential temperature.The experimental result shows that the upper mantle convection, the upheaval and diapirism and the gravity isostasy produce a monodirectional tensile force for the movement of the continental crust in North China. The tensile force represents a main mechanism for formation of dustpan-shaped basin.The authors suggest that the driving force for formation and development of the eastern North China basin is closely related to gravitational effect and movement of the upper mantle.

Key words: North China, Upper mantle, Convection, Diapirism, Basin