It is thought that the Moyston Fault in Victoria marks the eastern boundary and the northern extension may continue underneath and potentially include the Warburton Basin; however, this remains speculative.

The oldest and largest of these is the Adelaide Rift Complex, with the adjoining and relatively undeformed Stuart Shelf, Torrens Hinge Zone and Coombalarnie Platform making up the remaining Neoproterozoic provinces.

After about 725 Ma, deposition continued in a mostly passive margin setting along the western edge of the Palaeo-Pacific Ocean,[17] with renewed rifting during the Ediacaran to the east (present day) of the main depocentres until being terminated by the Delamerian Orogeny.

[1][13][6][3] The thickest parts of the stratigraphy reach a total cumulative thickness of about 24,000 m. The Adelaide Superbasin composed of several named basins and sub-basins.

The Torrens Hinge Zone is a transitional area between the relatively undeformed platform deposits of the Stuart Shelf and the deformed rocks of the central Adelaide Rift Complex.

It extends from the Stuart Shelf in the west across the Flinders Ranges to western New South Wales where it forms part of the Neoproterozoic–Cambrian cover on the Curnamona Province.

Not all of the basin experienced tectonic activity; the deposits on the Stuart Shelf and Coombalarnie Platform to the north-west and north-east remained undisturbed (and still do today).

Accompanying this folding and faulting were several intrusions: the granites at Victor Harbor were intruded at this time, as were those at Palmer in the eastern South Mount Lofty Ranges.

The first of these might be the probable sponges found in the Trezona Formation,[25] although the first confirmed[26] Animalia are the world-renowned Ediacaran fauna, named for the Ediacara Hills where they were first discovered in South Australia in 1946.

In the South Mount Lofty Ranges this has resulted in rifting and the formation of graben structures, creating the long parallel faults which shape the Adelaide Plains.