Supplement to May & Milnes paper: Pleistocene succession, St Vincent Gulf, South Australia

Excellent exposures of Pleistocene non-marine sediments in sea-cliffs in the St Vincent Basin in South Australia provided an opportunity to review the stratigraphic succession, determine the composition of the sediments and distinguish depositional features from distinctive later regolith overprints. Early siliclastic fluvial and alluvial sedimentary environments were later replaced by an aeolian and pedogenic carbonate system which blanketed large areas of the landscape. Subsequent erosion triggered by falls in base-level generated weathering environments in which conspicuous bleaching/iron-mottling and alunite/halloysite alteration occurred in specific zones and at different times in response to outflow of local chemically distinct groundwaters.