The Shanxi rift is located in the central part of the North China Craton (NCC). With strong tectonic deformation and intense seismic activity, its crust‐mantle deformation and deep structure have always attracted wide attention. Using teleseismic events observed in a dense network of 610 temporary and 127 permanent stations in the central NCC, we obtained the crust‐mantle S wave velocity structures by the joint inversion method of receiver functions and surface wave dispersion data. Our results show that the crust thickens in the northern part of the Shanxi rift (41 km) and thins in the southern part (35 km). The Taiyuan and Linfen basins, located in the central part, have high‐velocity zones in the lower crust and upper mantle; beneath the Yuncheng basin in the south, there are low‐velocity zones in the lower crust and uppermost mantle (30–80 km); the Datong basin, located in the northern part of the rift, exhibits a wide range of low‐velocity anomalies in the middle to lower crust and upper mantle. We speculate that the destruction of the NCC and associated lithospheric thinning had a significant impact on the southern part of the rift, but is still in its early stage in the central part, which retains most of the craton features. An upwelling of the asthenospheric magma occurred beneath the western part of the Datong basin. The horizontal deflection of the asthenospheric flow causes low‐velocity anomalies in its surrounding area, which is consistent with LAB topography.

中文翻译：

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华北克拉通山西裂谷下地壳和上地幔的S波速度结构及其构造意义

山西裂谷位于华北克拉通（NCC）的中部。构造变形强烈，地震活动激烈，其地幔幔变形和深部构造一直备受关注。利用在中央NCC的610个临时站点和127个永久站点的密集网络中观察到的远震事件，我们获得了地幔幔S通过接收函数和面波频散数据的联合反演方法得到波速结构。我们的研究结果表明，地壳在山西裂谷的北部（41公里）增厚，而在南部的地壳（35公里）变薄。太原盆地和临fen盆地位于中部，在下地壳和上地幔中具有高速带。在南部的运城盆地之下，下部地壳和最高地幔（30-80 km）内有低速带；位于裂谷北部的大同盆地，在中下地壳和上地幔中表现出各种低速异常。我们推测NCC的破坏和相关的岩石圈变薄对裂谷的南部有重大影响，但仍在中部处于早期阶段，保留了大多数克拉通功能。大同盆地西部下方发生了软流圈岩浆的上升。软流圈流动的水平偏转会引起其周围区域的低速异常，这与LAB的地形是一致的。