Here, Karelian seismological network data were studied to reveal the architecture of the subcontinental lithospheric mantle (SCLM). The receiver functions method was used, which is based on the identification of converted waves from teleseismic earthquakes and their joint inversion into a velocity model. Original one-dimensional (1D) velocity models for the continental lithosphere of the central Karelian Craton (KC) and the western Belomorian Mobile Belt (BMB; both part of the Archean segment of the Fennoscandian Shield) were presented, analysed and interpreted in geological and petrological terms.

The obtained results reveal that the SCLM is >200 km thick both in the KC and the BMB. The mantle in both structures was shown to contain a well-defined, contrasting boundary with the crust. However, the boundary between the SCLM and the asthenosphere was not identified in this study. The SCLM was found to be stratified and divided into upper, middle and lower layers in both structures. The boundary between the upper and middle layers was identified at a depth near the upper line of the garnet stability limit in mantle peridotites; the boundary between the middle and lower layers corresponds to the graphite/diamond equilibrium line.

The SCLM of the BMB was shown to exhibit a distinct lowered velocity zone in the middle layer. The 1D velocity model of the central KC was found to be in good agreement with the evidence for the SCLM stratigraphy, based on the study of mantle xenoliths and xenocrysts from kimberlites and lamproites from the area.

在这里，研究了卡累利阿地震网络数据，以揭示次大陆岩石圈地幔 (SCLM) 的结构。使用接收函数方法，该方法基于远震地震转换波的识别及其联合反演成速度模型。提出、分析和解释了卡累利阿克拉通中部 (KC) 大陆岩石圈和贝洛莫里亚移动带 (BMB；芬诺斯坎迪亚地盾太古宙段的两个部分) 的原始一维 (1D) 速度模型。岩石学术语。

获得的结果表明，在 KC 和 BMB 中 SCLM 的厚度均 > 200 km。两种结构中的地幔都显示出与地壳形成鲜明对比的边界。然而，本研究并未确定 SCLM 与软流圈之间的边界。SCLM被发现是分层的，并在两种结构中分为上层、中层和下层。在地幔橄榄岩中，在靠近石榴石稳定极限上限的深度确定了上层和中层之间的边界；中层和下层之间的边界对应于石墨/金刚石平衡线。

BMB 的 SCLM 在中间层表现出明显的低速区。基于对该地区金伯利岩和灯长岩的地幔捕虏体和异晶的研究，发现中央 KC 的一维速度模型与 SCLM 地层学的证据非常吻合。