Sequence Stratigraphic Interpretation of the Cretaceous through Miocene Section, Barcoo Sub-basin, Browse Basin, Northwest Shelf, Australia

The Browse Basin is one of four major sedimentary basins along the Northwest Shelf of Australia; large portions<br>remain largely unexplored. The study area is located in the Barcoo sub-basin, which was a major depocenter of the Browse<br>Basin. The sequence stratigraphic framework for Cretaceous through middle Miocene strata was developed to evaluate the<br>stratigraphic trap potential of the basin. Analysis was based on the interpretation of 11,800 km of 2D seismic and log data from<br>four exploration wells. Six second-order mega-sequences were recognized (145.5-112.0, 112.0-89.3, 89.3-65.5, 65.5-23.0,<br>23.0-19.0 and 19.0-14.2 Ma). Each mega-sequence was further subdivided into two to seven third-order depositional<br>sequences; each of these sequences was defined and summarized with structural, isochron, seismic facies, and geologic facies<br>analyses.