Geochemical characteristics of palaeogene oil shales and oil seeps in parts of naga hills, northeast india

The Tertiary rocks of NE India host number of oil and gas reserves which is an indication for the presence of good source rocks capable of generating such a prolific accumulation of oil and gas in the region. Twenty five oil shale samples collected from Palaeogene outcrops (Disang Group) of the study area were analyzed using Rock-Eval-VI. In addition, two oil-seep samples (Barail Group) have also been analyzed for their geochemical characteristics. The study reveals that the hydrocarbons in both the oil shales and the oil-seeps are in an immature stage and genetically relate to terrestrial sources.