Mt Owen is situated between two regional thrust faults, the Hunter Thrust and the Hebden Thrust that limit the lateral extent of the coal seams. Seam dips vary throughout the deposit, with dips being steep (up to 45 º ) in the areas near the Hunter and Hebden Thrusts where parallel thrusts dislocate the seam by up to 40 metres.

Up to 22 mineable coal intervals are recognised, ranging in thickness from 0.2 metre to 10 metres, within a stratigraphic interval of approximately 350 metres, the coal seams comprise a total thickness of approximately 55 metres.

The seams for which there is potential for economic extraction at Mt Owen include the Lemington Seams, Pikes Gully Seams, Arties Seams, Upper Liddell Seams, Middle Liddell Seams, Lower Liddell Seams, Barrett Seams, Upper Hebden Seams and the Lower Hebden Seams.