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GEODYNAMICS OF THE SOUTH OF THE SIBERIAN PLATFORM AND OIL-AND-GAS POTENTIAL

A. V. Migurskiy

Siberian Research institute of geology, geophysics and mineral resourses, Novosibirsk, Russia

Geodynamic processes are among the main factors in the evolution of naphthidogenesis. This is especially clearly illustrated by the example of the Siberian Platform, which has experienced seven planetary geodynamic activations. These are the Karelids (1.9–1.7 billion years old), which soldered the largest megablocks (terranes) into a single craton, Baikalids (Late Neoproterozoic) having transformed the southern framing of the platform, Caledonides (Late Silurian – Early Devonian), which formed the Pred-Patom fold-thrust belt, early (Middle Devonian – Early Carboniferous) and late Herzenides (Middle Carboniferous – Early Triassic), the impact of which led to the emergence of the Vilyui Rift System, the Vilyui and Tunguska syneclises, great shows of trap magmatism and associated fold zones, the Mesozoids (Middle Triassic – Cretaceous), which formed the Vilyui syneclise, Angara-Vilyui trough, Prisayan-Pribaikal fold-thrust belt and geographical ranges of carbonatite, subalkalic intrusions, iron breccia pipes. In Cenozoic, the south of the Siberian Platform was affected by the formation of the Baikal arched uplift. All the listed structural failures affected the genesis of hydrocarbons, migration, formation, destruction and redistribution of oil and gas fields in varying degrees.

Keywords: Siberian platform, geodynamic activation, oil and gas potential.

DOI 10.20403/2078-0575-2019-2-35-50