The Composition and Petroleum Generation Characteristics of The Organic Matter in Rocks from Outcrops in The Southern Part of Sakhalin Island (for Stratigraphic Analogs of The Pilskaya Formation)

Summary The analysis of the organic matter of the Upper Oligocene-Lower Miocene rocks sampled in the outcrops in the central and southern parts of Sakhalin Island was carried out. The Verkhneduiskaya and Sertunaiskaya formations are characterized by a lower oil-generating potential compared to the source rocks of Pilskaya Formation. A comprehensive analysis of pyrolytic, kinetic characteristics and molecular composition were made, and the studied samples were grouped according to types of the initial organic matter and maturity.