Home – Home – Jornals – Russian Geology and Geophysics 2018 number Неопубликованное

In this paper, the model of the geological structure of the North Kara sedimentary basin is considered on the basis of a complex interpretation of seismic and geological data on islands and the continental margin of Siberia, and its seismostratigraphic and structural-tectonic characterization is given. It is concluded that in most of the basin the sedimentary cover is composed of Paleozoic sediments from the Cambrian to the Permian inclusive, the thickness of which reaches 13-14 km in depressional zones. The thickness of Mesozoic sediments in most of the basin does not exceed 1 km; in the northwest, where the North Kara basin borders the Barents Sea basin, the thickness of Mesozoic sediments increases to 5-6 km, and here the sedimentary cover includes Paleozoic, Triassic, Jurassic and Cretaceous seismogeological complexes. In terms of oil and gas content, the North Kara sedimentary basin is identified as part of the promising oil and gas province of the same name, which has a high potential from the seismic stratigraphic and structural-tectonic positions. The structural plans of various stratigraphic levels contain large depressions and rises that may be associated with zones of oil and gas formation and oil and gas accumulation; anticlines and complex traps - potential oil and gas prospective objects - are identified in various sedimentary complexes from Cambrian to Jurassic inclusive. According to the performed quantitative assessment, the most probable initial geological hydrocarbon resources of the North Kara sedimentary basin are about 10.7 billion tons of conventional hydrocarbons.