Tertiary channelling in the Duntroon Basin, Australia ? significance for hydrocarbon trap styles and plays

Abstract

Consecutive major Tertiary channelling episodes localised at a major offset in the Duntroon Basin have generated large erosional structures sealed by thick transgressive marls. The controls on the trap development are the sequence of channelling events, and the nature of the channel fill as it relates to seal risk of the structures. These erosional structures, draped by sands and capping marls, offer excellent hydrocarbon trapping potential.