Crustal P-and S-Wave Velocity Structure of the North China Craton at 36°N from Active-Source Seismic Data and Its Tectonic Implications

作     者：Xiaofeng Tian Walter DMooney Xiaoguo Deng Songlin Li Baofeng Liu Hanqi Liu Xiaofeng Tian;Walter D.Mooney;Xiaoguo Deng;Songlin Li;Baofeng Liu;Hanqi Liu

作者机构：Geophysical Exploration CenterChina Earthquake AdministrationZhengzhou 450003China U.S.Geological SurveyMenlo Park CA94025USA 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2022年第33卷第3期

页      面：642-663页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：supported by the DREAM project of the National Key R&D Program of China(No.2016YFC0600402) the National Natural Science Foundation of China(No.41774071) the US Gelogical Survey Earthquake Hazards Program 

主　　题：North China Craton crustal velocity structure craton destructure tectonics wideangle reflection/refraction 

摘      要：We present crustal models for seismic P-waves(Vp),S-waves(Vs)and the Vp/Vs ratio across the southern North China Craton along latitude 36°*** results are based on inverse and forward modeling of long-range wide-angle reflection/refraction *** crust of the southern Ordos Block has high lower crustal velocity(7.0 km/s)and a Moho depth of~42 *** contrast,thick sediments and a lower average velocity(compared with the Ordos block)found underneath the Shanxi Graben are likely to be the products of rifting that has occurred since the *** Moho dips,exposed basement rock and higher average crustal velocity beneath the Lüliang Mountain and the Taihang Mountain are characteristic of an orogenic *** Tanlu fault and the Liaocheng-Lankao fault show sharp crustal velocity variations and a Moho *** seismic profile sampled the entire region of the Eastern North China Craton where the cratonic root has been destroyed and the unique crustal structure is correlated with the substantially modified *** crustal seismic velocity model shows a strong correspondence between surface geology,local tectonics and the deep crustal structure.