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与中生代中期造山型构造活化不同．晚中生代期间，中国大陆东部的构造活化表现为规模宏大的断陷盆地系、变质核杂岩、花岗岩浆侵位、火山岩喷发以及沿大型走滑断层的转换伸展为特征的大陆裂陷作用。根据岩浆活动、盆地的充填记录，构造格架和盆地的沉降史分析，可以将裂陷作用划分为两个大的阶段，即由兴安岭群火山喷发为代表的第一阶段和以巴彦花群含煤、油碎屑岩系为代表的断陷盆地形成阶段。盆地沉降史回剥研究表明，裂陷作用第二阶段断陷盆地的发育受控于次一级的幕式构造作用过程。此外．对晚中生代裂陷作用的动力学背景的探讨需要阐明岩石圈的深部过程和构造应力场的反转这个两个重要的问题。
It is different from the activation of orogenic structure in the middle Mesozoic. During the Late Mesozoic, the tectonic activation in the eastern part of mainland China manifested as continental rifting characterized by large-scale faulted basin system, metamorphic core complex, granitic magma emplacement, volcanic eruption, and transformation along a large strike-slip fault. Based on the analysis of magmatism, filling records in the basin, tectonic framework and basin subsidence history, the rifting can be divided into two major stages: the first stage, represented by the volcanic eruption of the Xing’anling Group, Group of coal, oil clastic rock system, represented by the fault basin formation stage. The study on the subsidence history of the basin subsidence shows that the development of the second rift basin in the rifting is controlled by the sub-stage episodic tectonism. In addition. The discussion of the dynamical background of Late Mesozoic rifting needs to elucidate two important issues: the deep processes in the lithosphere and the reversal of tectonic stress fields.