中国大陆新生代构造应力场的研究

RESEARCH ON CENOZOIC TECTONIC STRESS FIELD ON CHINA MAINLAND

本文通过断陷盆地的分布特征、震源机制解和地应力测量等方面的资料分析研究,认为新生代以来中国大陆没有统一的构造应力场,或者说现今应力场小于前期应力场;断层活动、地震活动并不意味着应力的不断积累、不断加强,相反是应力的不断释放、不断减弱。

This paper proposes that there has not been the unified tectonic stress field on China mainland since Cenozoic era or in other words, the present stress field is smaller than that of the previous periods, and faulting and seismic activity do not imply the successive accumulation and reinforcement of the stress; On the contrary, the continuously release and weakening of the stress through the analysis and research on the data of the distributionn features of the down-faulted basin, the focal mechanism solution and the ground stress measurement.