 It is separated from Neoproterozoic rocks by a low angle thrust fault.The Neoproterozoic rocks contain greywacke, mudstone and pillow lavas of the Lucas Creek Volcanics (matching the Crimson Creek Formation), mudstone, siltstone (matching the Success Creek Group) and dolomite (correlating with the Togari Group).South east of this is a metamorphosed belt of dolomite rich sediments correlated with the Oonah Formation.