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根据人工地震及部分钻井资料研究,邯郸、汤阴断陷是太行山南段东麓的北北东向箕状断陷,邯郸断陷形成于早第三纪,主要受其东缘的邯东铲式正断裂控制。汤阴断陷形成于第三纪,其北部主要受东缘的汤东铲式正断裂控制,南部受东、西边缘的汤东、汤西铲式正断裂控制。两个断陷均为浅源震区,近几年来时有小震出现。邯东断裂没有明显的新活动,地震活动也较微弱,而汤阴断陷的汤东、汤西断裂,新活动明显,推测南部地震活动水平较高,是更应注意的地段。
According to the study of artificial earthquakes and some drilling data, the Handan-Tangyan faulted depression is a north-north eastward half-graben-shaped fault depression in the eastern foot of the southern Taihang Mountains. Handan fault depression was formed in the early Tertiary, mainly due to its eastern part of the Handan shovel Type of positive fracture control. The Tangyin fault depression was formed in the Tertiary. Its northern part is controlled by the Tangdong shovel-type normal fault in the east margin and the Tangdong and Tangxi shovel-type normal faults in the south and east and west edges, respectively. The two fault depressions are all shallow source earthquakes, with minor earthquakes occurring in recent years. There are no obvious new activities in the Handan Fault and less seismic activity. The Tong-Dong and Tangxi faults in the Tangyin faulted depression have obvious new activity. It is presumed that the seismic activity level in the south is higher, which is more should be noticed.