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中国大陆晚新生代和现代构造变形以地块运动为主要特征,活动地块是被形成于晚新生代、晚第四纪(10～12万年)至现今强烈活动的构造带所分割和围限、具有相对统一运动方式的地质单元。不同活动地块的运动方式和速度是不同的,地块间的差异运动在其边界最强烈。强震是在区域构造作用下,应力在变形非连续地段不断积累并达到极限状态后突发失稳破裂的结果,活动地块边界带由于其差异运动强烈而构造变形非连续性最强,最有利于应力高度积累而孕育强震。我国大陆几乎所有8级和80％～90％的7级以上强震发生在活动地块边界带上,表明地块间的差异运动是大陆强震孕育和发生的直接控制因素。
The Late Cenozoic and modern tectonic deformation of the Chinese mainland is mainly characterized by the mass movement. The active massif is divided by the tectonic belts that formed in the Late Cenozoic and Late Quaternary (10 ~ 120,000 years) up to nowadays and surrounded by Limit, with the relative unity of the movement of geological units. The movement patterns and speeds of the different activities are different, and the differences between the blocks are the strongest at their boundaries. Strong earthquakes are the result of sudden instability and rupture after stress discontinuity accumulates and reaches the limit under the action of regional tectonics. Because of the strong differential motion, strong discontinuities in the boundary zone of active mass are the most, Is conducive to the accumulation of high stress and pregnant strong earthquake. Almost all of the 8th and 80% ~ 90% strong earthquakes of magnitude 7 above occurred in the active zone boundary zone in mainland China, indicating that the differential movement between the blocks is the direct control factor for the occurrence and occurrence of the strong earthquakes in the mainland.