Scientific publications

This paper presents the results of a study of the upper mantle in the Kola region, based on the analysis of broadband seismological data. The dataset includes seismograms fromboth permanent seismic stations installed in the region and four new temporary recording sites. Using the network of 14 stations, we obtained shear-wave velocity models to depths of about 300 km using the receiver function method. The new models reveal a heterogeneous structure of the lithosphere in the study area, where a high-velocity layer rises toward the upper layers of the mantle and deforms the overlying mid-lithosphere discontinuity (MLD), characterized by lower velocities. This heterogeneous mantle structure appears to be the result of an interaction between the Archean lithosphere and a Paleoproterozoic mantle plume. Furthermore, the study shows that the crust-mantle transition in the region is represented by both a sharp Moho boundary and a gradient layer.