Lower Cretaceous deposition in the southern North West Shelf

Summary

Based on seismic, core and log data, the depositional framework and major lithostratigraphic variations of the Barrow Group are investigated, followed by an integrated subsurface and outcrop study of the sedimentology, depositional history and stratigraphy of the basal Winning Group in the Northern Carnarvon Basin.

Core outcrop and log data used in the succession are evaluated from both sequence stratigraphic and traditional stratigraphic viewpoints.

Finally, available biostratigraphic control is integrated with regional electric-log and seismic correlation to present the palaeogeographic evolution of the Barrow Group and Lower Winning Group in terms of an empirically derived sequence-stratigraphic framework.

Keywords: geology, stratigraphy, petroleum, North West Shelf, lithofacies