A 2D Seismic Stratigraphic Interpretation of the Basal Hammerhead Supersequence, Bight Basin, Offshore South AustraliaNatasha Bysterveld
Honours - Bachelor of Science (Petroleum Geology and Geophysics)- 2014
Australian School of Petroleum
University of Adelaide
Sequence stratigraphy is a powerful exploration tool in basin analysis which can be used to predict geological properties from geophysical data. This study applied the principles of sequence stratigraphy to 2D seismic reflection data to conduct a seismic stratigraphic analysis of the basal Hammerhead Supersequence, in the Bight Basin. The Bight Basin is an east-west trending basin located in the Great Australia Bight of Southern Australia. It developed in response to the rifting and northward drift of the Australian continent from Antarctica. The main depocentre is the Ceduna Sub-Basin which preserves Cretaceous aged deltaic strata over an area of 100,000 km². A seismic stratigraphic analysis of the region resulted in seven interpreted sequence boundaries and five mapped parasequence sets within the basal Hammerhead Supersequence. Depositional facies were interpreted as ranging from of paralic to marine, with good reservoir and intraformational seal potential.