Shelf-margin architecture, sediment partitioning and shallow- to deep-water reservoir distribution in the Barrow Group (Northern Carnarvon Basin, North West Shelf, Australia): Insights from quantitative 3D seismic stratigraphy

The Barrow Group corresponds to a shelf margin (-100-500 m relief) that evolved during a syn-rift to post-rift transition (Latest Jurassic-Early Cretaceous). Full-volume 3D seismic interpretation methods and high-resolution quantitative analysis reveal that different combinations of coastal processes are responsible for linking shelf-margin architecture to deep-water systems. An observation-based sequence stratigraphic approach is proposed to better understand the short- and long-term controls on shelf-margin depositional systems. This work shows that a better understanding of shelf-to-basin sediment transfer mechanisms and their impact on sequence development can be achieved at high resolution in pre-Quaternary source-to-sink systems using quantitative 3D seismic stratigraphy.