TY JOUR TI Petrogenetic typing of volcanics from the top of the oil-bearing pre-Jurassic complex in the Elizarovsky trough of the West Siberian Plate KW volcanics KW petrotypes KW genotypes KW reservoir properties KW pre-Jurassic complex KW West Siberian Plate JO Russian Journal of Earth Sciences AU Rostovtseva, Y.V. AU Nemova, V.D. AU Nemchenko, N.V. AU Tomasenko, S.V. AU Pustylnikova, V.V. PY 2025 IS 25 PB Geophysical Center of the Russian Academy of Sciences