Publication Name: Australasian Exploration Geoscience Conference 2019
Authors: Jane Cunneen, Amanda Buckingham, Cecilia D’Ercole
Date Published: September 2019
Number of Pages: 3
Abstract:
The Bremer Sub-basin occupies a unique position on Australia’s south-west margin. It is influenced by two rift events associated with the breakup of Gondwana: rifting along Australia’s western margin in the Early Cretaceous as well as the southern margin rifting in the Late Cretaceous. The basin is underlain by Proterozoic granites, gneisses and sedimentary rocks of the AlbanyFraser Orogen and the structural fabric of the basin is strongly influenced by the basement architecture. Weaknesses along shear zones localised deformation in the early rift phases, resulting in complex structures including ramp-flat faults and associated extensional folds.