Chargeability of Quaternary Clay and its Interrelation with Presence of Oil and Gas in Mesozoic Sediments–West Siberia

Results of measurements of fast decaying induced polarization (IP) on Quaternary clay samples in comparison of the geochemical data executed on a site in Western Siberia are discussed. The higher clay chargeability was observed in zones with abnormal contents of aromatic hydrocarbons. Conclusions are made, that higher concentration of hydrocarbons in Quaternary clay and their abnormal chargeability can be attribute to oil-and-gas deposits at depth. It is supposed to use near-surface IP measurements for contouring the epigenetically changed rocks above deposits of hydrocarbons.