Abstract: On the basis of crustal structure,focal mechanism,seismicity and geophysical research,the authors suggest that in North China exists gravitational lateral spreading of the crustal substances mainly from SW to NE.In this paper,fundamental characteristics of such a mass spreading as well as its relation to recent tectonic motion and seismic activity are presented.It is shown that gravity is to contribute to recent tectonic motion and seismic activity in this area.

摘要： 根据地壳结构、震源机制解、地震活动及地球物理探测等资料的综合分析,作者认为,在华北存在着由南西往北东为主的地壳物质重力水平扩展作用。本文分析了华北地壳物质重力水平扩展运动的基本特征及其对区内现代构造运动与地震活动的制约关系。