Reanimating lithosphere of North China: new insights from full-waveform seismic tomography  

华北岩石圈活化:来自全波形地震层析成像的新见解

作　　者：Xingpeng Dong Dinghui Yang 董兴朋;杨顶辉(Department of Mathematical Sciences,Tsinghua University,Beijing 100084,China)

机构地区：[1]Department of Mathematical Sciences,Tsinghua University,Beijing 100084,China

出　　处：《Science Bulletin》2020年第10期775-777,M0003,共4页科学通报（英文版）

基　　金：supported by the Joint Fund of Seismological Science (U1839206);the National Research & Development Program on Mornitoring, Early Warning and Prevention of Major Natural Disaster (2017YFC1500301)

摘　　要：The North China Craton(NCC)consists of the western Ordos block and the eastern block of the North China Basin,which are separated by the Taihang Mountains.The eastern NCC experienced multiple stages of tectonic-magmatic activity and internal deformation of the crust in the Mesozoic and Cenozoic[1],while the Ordos block retains the original cratonic characteristics,i.e.,it is stable and lacks seismic activity.Continuous subduction of the western Pacific Plate is responsible for lithosphere reanimating in North China[2],but the detailed morphology of lithospheric thinning patterns remains unresolved.Because rock wave velocity is affected by temperature,and rock anisotropy is mainly dominated by directional alignment of crystals,seismic tomography can be applied to depict the shapes of cooler lithosphere and warmer mantle flow,providing crucial constraints on crust and mantle deformation.

关 键 词：NCC Block 地震层析成像 全波形 岩石圈 

分 类 号：P631.4[天文地球—地质矿产勘探]