Publication Name: CENTRAL AUSTRALIAN BASINS WORKSHOP 1993 (CABS 1)
Authors: R.J. Korsch, R.D. Shaw, B.R. Goleby
Date Published: September 1993
Number of Pages: 7
Abstract:
In the Late Proterozoic, the Amadeus Basin developed during an initial period of subsidence due to an extensional and/or thermal event which was followed by subsidence driven by thermal relaxation of the lithosphere (Stage 1). A second, less intense, episode of subsidence driven by extension (Stage 2) occurred towards the end of the Late Proterozoic in the northern part of the basin, at the same time or slightly late than the Petermann Ranges Orogeny was occurring at the southern margin. The basin was also shortened during the Late Devonian-Early Carboniferous Alice Springs Orogeny, when subsidence was driven by foreland-loading processes (Stage 3). Throughout the history of the Amadeus Basin, sedimentation and basin evolution are intimately related with extensional and contractional deformational events (Lindsay & Korsch 1989, 1991; Shaw 1991; Shaw et al. 1991a).