FIGURE 3. Proximal fan deposits of the Skoorsteenberg Formation are comprised of erosionally based, narrow (low aspect ratio) channels and interchannel sheets. Ten major channels are identified, which range from 300 to 500 m (984 to 1630-ft) wide and are typically 5-10-m (16-32-ft) thick. Channels are filled from axes to margins by amalgamated, thick-bedded massive sandstones. The interchannel areas are characterized by nonamalgamated thin- to thick-bedded current-ripple-laminated sandstones and interbedded laminated silty mudstones (location: Ongeluks River) (modified from Sullivan et al., 2000a).