Recent multibeam sea bottom surveys of the Lower Cook Inlet, Alaska, show abundant pock marks commonly associated with natural gas seeps. It is expected that the seeps are active due to the clarity of the pock marks. Three cores were taken for geochemical analysis targeting these features over an area of approximately 15 square miles.

Analysis is underway for the recently collected samples but C15+ Gas Chromatography data thus far indicate a strong contribution of recent organic matter to the overall sediment signature. Continued work is focused on the source rock details for the observed hydrocarbons with the goal of better understanding the local petroleum system.