Abstract —Based on the distribution of mantle seismicity and the sets of focal mechanisms of the earthquakes, the existence and deformation type of an allantoid mantle body within the eastern part of the Caucasus Isthmus is established. The body is inclined and plunges from the southeast to the northwest to a depth of 160 km. The shape of the mantle body and the type of its stress state which is fundamentally different from that for the Earth’s crust in the region precludes us from accepting plate-tectonic interpretation of this formation in the form of a concept implying the subsidence of the subducting part of the Arabian lithospheric plate underneath the Eurasian plate. We hypothesize that this phenomenon is associated with the tectogenesis process developing in the subcrustal mantle of the Caucasus irrespective of the collision processes.

中文翻译：

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高加索地峡东部深部地幔地震

摘要——根据地幔地震活动分布和地震震源机制，建立了高加索地峡东部尿囊状地幔体的存在和变形类型。体部倾斜，自东南向西北倾斜，深度达160公里。地幔体的形状及其应力状态的类型与该地区地壳的应力状态有着根本的不同，这使我们无法以暗示俯冲部分下沉的概念的形式接受对该地层的板块构造解释位于欧亚板块下方的阿拉伯岩石圈板块。我们假设这种现象与在高加索地壳下地幔中发展的构造发生过程有关，而与碰撞过程无关。