We used receiver function (RF) analysis to derive new seismic models of Moho depth, crustal Vp/Vs ratio, depth of sedimentary velocity discontinuity, and corresponding sedimentary Vp/Vs ratio in the Permian Basin region from the seismic waveform data of 260 moment magnitude (Mw) ≥ 6 teleseismic events. We obtained the optimal models by searching one- and two-layer models and comparing similarity between the synthetic and observed RFs. We find the first-order velocity discontinuity in sedimentary basins is shallower than the basin basement. The Delaware Basin (DB) exhibits a bowl-shaped sedimentary velocity discontinuity, with depths ranging from 1.7 km to 5.8 km, whereas the Central Basin Platform (CBP) has a shallow sedimentary velocity discontinuity, with 0.2 km to 2.7 km depths. Moho depth ranges from 36 km to 46 km in the Permian Basin region. The median Vp/Vs ratios of the crust are 1.75, 1.79, and 1.78 in the DB, CBP, and the Diablo Platform (DP), respectively. Our interpretation of the different Vp/Vs ratio in the three subregions is that the crust in the DB includes more low-Vp/Vs-ratio felsic rocks, and the crust in the CBP and DP contains more high-Vp/Vs-ratio gabbroic and basaltic rocks from the Proterozoic and Phanerozoic mafic intrusion.

我们使用接收器函数（RF）分析从260矩震级的地震波形数据推导了二叠纪盆地地区莫霍深度，地壳Vp / Vs比，沉积速度不连续深度以及相应的沉积Vp / Vs比的新地震模型。 （Mw）≥6次地震事件。我们通过搜索一层和两层模型并比较合成RF和观察到的RF之间的相似性来获得最佳模型。我们发现沉积盆地的一阶速度不连续性比盆地基底要浅。特拉华盆地（DB）表现出碗形的沉积速度不连续性，深度范围为1.7 km至5.8 km，而中央盆地平台（CBP）的沉积速度不连续性较浅，深度为0.2 km至2.7 km。二叠纪盆地地区的莫霍面深度范围从36 km到46 km。在DB，CBP和Diablo Platform（DP）中，地壳的中值Vp / Vs比分别为1.75、1.79和1.78。我们对这三个子区域中不同的Vp / Vs比的解释是，DB中的地壳包含更多的低Vp / Vs比率的长石质岩石，而CBP和DP中的地壳包含更多的高Vp / Vs比率的辉长岩和元古生代镁铁质侵入带的玄武岩。