Features of Basement Structure of the Southern Part of Vilyuy Syneclise

Based on the analysis of seismic time sections along regional profiles made in the southern part of the Vilyuy hemisyneclise, dynamic anomalies that carry information about the features of the structure of the Archean-Lower Proterozoic basement have been identified. Using the experience of the Tatarstan basement study, in the Sinsk area dynamic anomalies in the upper part of the basement were interpreted as decompacted zones. These zones may represent high-capacity reservoirs and may be of interest for exploratory drilling in the future. Volumetric dynamic anomalies detected in the earth's crust at considerable depths and interpreted as energy-active (energy-saturated) volumes of the geological environment are of conciderable scientific and practical interest. The outlined connection of such anomalies with the location of large finds of important mineral resources (oil, gas, diamonds, uranium) makes their study a priority. One of such anomalies (Suntar) was found in the southwestern part of the Vilyuy area. Analysing this structure could be assumed the presence of kimberlite fields, as well as hydrocarbon accumulations in the studied part of the Suntar arch and its northeastern slope. This suggests the necessity for a case study of the identified anomaly. Considering that such a promising object in the Vilyuy hemisyneclise is not unique, it is advisable to start a step-by-step generalization of the results of geophysical exploration right now. Along with the study of the sedimentary structural cover and basement, one of the main goals of such a generalization should be the creation of a tectonodynamic map of this most promising territory. To fully solve these and other problems, it is necessary to carry out regional geophysical recearch on profiles that completely intersect the entire syneclise, more clearly coordinate the ongoing and planned regional activity, cover the entiere Vilyuy syneclise with modern aeromagnetic and airborne gravity surveys completely with the fulfilly study of adjacent tectonic elements.