Late Pleistocene alluvial deposition in the central coastal areas of Western Australia. 1. Chronostratigraphy and sedimentology of the red alluvium. Late Pleistocene alluvial deposition in the central coastal areas of Western Australia. 2. The paleohydraulics of the red alluvium. Late Pleistocene alluvial deposition in the central coastal areas of Western Australia. 3. Causes of stream aggradation and paleoenvironmental significance of the red alluvium.