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

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2020,（10）
• 页码范围: 775-777
• 页数: 3页
• 语种: 英文

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.