Publication Name: CENTRAL AUSTRALIAN BASINS WORKSHOP 1993 (CABS 1)
Authors: S. J. Marshallsea
Date Published: September 1993
Number of Pages: 1
Abstract:
The western Officer Basin forms the western end of a belt of Proterozoic to Palaeozoic sub-basins which extend across Western Australia and South Australia. The oldest rocks recognised are Lower to Middle Proterozoie sediments, overlain by thick Upper Proterozoie evaporites and elastics. A major regional unconformity, perhaps associated with the Peterman Ranges Orogeny of the Amadeus Basin, is recognised prior to deposition of late Proterozoie to Cambrian sediments and volcanics. Paleozoie and Mesozoic units are up to 2000 m thick, with several regional unconformities recognised, notably post-Cambrian and post-Permian to Jurassic. Youngest preserved sediments are of Cretaceous age (Townson, 1985).