Control of reservoir geometry and stratigraphic trapping by erosion surface E5 in the Pembina-Carrot Creek area, Upper Cretaceous Cardium Formation, Alberta, Canada

Seven major erosion (E) surfaces are found within the 100-m-thick Cardium Formation in the subsurface of Alberta. Erosion surface E5 has up to 20 m of erosional relief in the Carrot Creek area, and is cut into originally horizontal open-marine sandstones and mudstones. The E5 surface has been correlated into the Pembina area by construction of a structure map based on 2470 resistivity logs. The topography is interpreted to have formed during …