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FORECAST OF HETEROGENOUS SUBSURFACE FEATURES IN THE NORTH OF THE TUNGUSKA SYNECLISE

V. S. Staroseltsev

Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk, Russia

The article analyzes manifestation pecularities of deep faults in the Earth’s crust of platform regions from the Moho discontinuity to the ground surface. The nature of change in the configuration of disjunctive dislocations has been studied. It is shown that it is possible to predict the presence of mineral deposits on the basis of revealing the detailed structure of the near-surface and root zones of regional deep faults in certain situations. As an example, a number of areas promising for discovery of hydrocarbon accumulations and orebearing intrusions are singled out. Major hydrocarbon accumulations can be found in the north of the Tunguska syneclise within the Upper Kotuy dome, Khantayskiy nose, Upper Khugdyakit uplift, to which they can come from the Verkhneketskaya hollow of the Lama-Khantayskiy megatrough, periodically replenished from the Yenisey-Khatanga regional trough. The discovery of new deposits of polymetallic ores in the northwest of the Kharaelakh trough is also likely.

Keywords: large hydrocarbon accumulations, polymetallic ores, tectonic substantiation of their formation.

DOI 10.20403/2078-0575-2019-2-24-34