GENESIS OF OILS AND OIL SHOWS OF THE ANABAR-KHATANGA SADDLE (ARCTIC SECTOR OF THE SIBERIAN PLATFORM)

V. A. Kashirtsev, N. S. Kim, E. A. Fursenko, O. S. Dzyuba, A. N. Fomin, O. N. Chalaya

In recent years much attention is given to HC raw material resource evaluation in insufficiently known Arctic regions in the east of Russia. The Anabar-Khatanga saddle, which oil shows are known from 1940–1950-s, is one of the objects promising for oil and gas. The question of what strata oil sources were for localized naphthids there has not been resolved yet. According to data on distribution of hydrocarbonbiomakers in investigated naphthids (high concentrations of squalane, exceedance of andiantan under regular gapane, presence of gammaceran) a conclusion that OM accumulated in conditions of extremely salinized sedimentary basin is made. The comparison of given geoсhemical materials with geological data allow to consider the all studied naphthids have its origin, mainly, in organic matter of oil source strata of Devonian salt-bearing complex, in a less degree – in Upper Paleozoic formations.

Key words: Anabar-Khatanga saddle, naphthids, hydrocarbons biomarkers, alkanes, terpanes, steranes, genesis of oil.

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