Abstract: In the study of seismotectonics,much attention is usually paid to active fault zones which have long evolution history and large scales.However there are also newly-generated seismotectonic zones in the recent tectonic stage.Seismicity has a close relation with both kinds of tectonic zones.It can be seen that Tangshan-Hejlan-Cixian seismic zone is a new crustal shear fracture zone which has been developed since the Neogene as well as a newly-generated seismotectonic zone in North China based on analysis of the data of earthquakes and geological structures.

Key words: Seismotectonics, Depression, Hebei

摘要： 地震构造研究往往注重那些形成历史长且规模较大的活动断裂带。实际上还存在一种与现代地质环境和区域应力状态基本保持一致的最近构造阶段新发育的断裂带,即新生断裂带。地震活动与这两种构造带关系密切。根据地震和地质构造等资料分析认为,唐山-河间-磁县地震带是一条晚第三纪开始发育的新生地震构造带。

关键词: 地震构造, 坳陷, 河北