Abstract We present an overview of previous deep seismic sounding(DSS) results in Henan region along with a review of crustal structure features. The results show that: 1) The north China plate in north-central Henan province is characterized by a simple upper-middle-lower stratification, mirror-symmetrical deep and shallow tectonics and widely developed low-velocity bodies in the crust, while the crust of the Qinling-Dabie fold belt in the south is characterized by a highly laterally variable velocity structure, high velocity domes, large dip intracrustal reflective interfaces and Moho interfaces in the form of septal folds. 2) Changes in crustal thickness in the north China basin occur mainly in the middle and lower crust, while the upper crust is more uniform in thickness. The absence of mountain roots in the deep crust of the Qinling-Dabie fold belt reflects the strong slip action of the lower crust along the Moho surface. 3) The characteristics of earthquake distribution in different regions of Henan province are closely related to the velocity structure of the crust. The distribution of earthquakes in Puyang is controlled by high-speed anomalies, in Xuchang it is controlled by a combination of crustal media and regional fractures, while in Nanyang it is mainly controlled by the stratified structure of the crust.
MA Cejun,TIAN Xiaofeng,WANG Shuaijun et al. Crustal Structure Features of Henan Region Revealed by Active Source Deep Seismic Profiles[J]. jgg, 2023, 43(12): 1218-1223.
MA Cejun,TIAN Xiaofeng,WANG Shuaijun et al. Crustal Structure Features of Henan Region Revealed by Active Source Deep Seismic Profiles[J]. jgg, 2023, 43(12): 1218-1223.