Tectonic features of different types of oil and gas bearing basins in the west of the East European platform

Abstract

In the Neoproterozoic and Paleozoic, different-type sedimentary basins, some of which are oil-and-gas bearing, were formed in the western East European Platform (EEP). These basins are confined to two types of regional structures – rift intracontinental and passive-coastal. Their tectonic features determined the geological conditions of oil and gas formation and oil and gas accumulation. The Pripyat paleorift oil and gas bearing basin, which is the closing western segment of the Hercynian Pripyat-Dneprov-Donetsk avalacogenes, has the largest hydrocarbon reserves in the region and a complex structure. High density of block and plicate-block divisions of oil-and-gas bearing complexes is connected with syngenetic faults and salt tectonics. The oil-and-gas content of the sedimentary basins of the Caledonian passive margin of the West WEP – Baltica, Podlaska-Brest, Lublin, Volyn-Podolsk, is caused by the extended areal of the oil-and-gas formation in the sub- and near-thrust deep-submerged sedimentary complexes in the Teisser-Tornquist zone. It was the main source of hydrocarbon-fluid migration eastward into the sedimentary basins of the WEP passive margin.