Areas W07-5, W07-6 and W07-7
Caswell Sub-basin, Browse Basin
Release Area Geology
The Caswell Sub-basin is the northernmost major depocentre of the Browse Basin, containing up to 15 km of Palaeozoic to Cenozoic sediments (Struckmeyer et al, 1998). It is flanked to the east and southeast by the Prudhoe Terrace and Yampi Shelf (Figure 2).
The outer margin of the Caswell Sub-basin is marked by an arcuate Triassic structural high (Buffon–Scott Reef–Brecknock anticlinal trend). This outer high passes westward into the deep waters of the Scott Plateau, the inboard (eastern) portion of which is underlain by the Seringapatam Sub-basin.