Shallow seismic survey in the Middle Timan

We conducted shallow seismic exploration in the Middle Timan region to study the depth and spatial distribution of geological bodies. The study focused on the «Verkhnemezenskaya» kimberlite pipe, and the «Pavyuga» and «Kamenskaya» magnetic anomalies, located within the southern part of the Chetlas uplift. Analysis of the seismograms revealed distinct anomalies in the form of changes in first-arrival waveforms, loss of correlation, and reduced seismic wave intensity. These features clearly delineated the «Verkhnemezenskaya» pipe, and the «Pavyuga» magnetic anomaly zone. The shallow seismic survey proved effective in mapping geological boundaries based on vertical heterogeneities. The investigation depth, determined by the energy of the seismic source and the spread length (235 m in this case), typically did not exceed 30–50 m., and in the vast majority of cases did not exceed 30—50 m with an alignment of 235 m. The use of shallow seismic exploration (refraction method) supported this method to identify the boundaries of geological structures based on the heterogeneities of the environment.