Nature of sedimentary deposits in the western Makgadikgadi basin, Botswana

Vegetation cover trends along the Botswana Kalahari transect

“…A number of these sites occurred on washed dunes adjacent to former lacustrine plains (Thomas & Shaw, 1991). Topographically the Maun area, which lies to the south of the Okavango alluvial fan, is a former extension of the palaeo-fan which extended south-eastwards towards the Makgadigadi basin (Cooke & Verstappen, 1984;Ringrose et al, 1999b). Much of this area comprises Colophospermum mopane woodlands and shrublands (Figs.…”

Diagenesis in Okavango fan and adjacent dune deposits with implications for the record of palaeo-environmental change in Makgadikgadi–Okavango–Zambezi basin, northern Botswana

“…Manual interpretation techniques were applied using spectral and textural criteria described in Ringrose et al (1999) and McFarlane et al (2005). Sand samples (250 g) were taken from mapped degraded dune and alluvial fan locations from hand-dug and augered pits 2 m deep, at 25 cm intervals.…”

Geochemical mapping of carbonate sediments in the Makgadikgadi basin, Botswana using moderate resolution remote sensing data

“…This may be because carbonates are widespread throughout the region, or because the carbonate content of the calcretes is quite low, with quartz being the dominant mineral (Ringrose et al, 1999). Microbial silcretes can also form in highly alkaline pan environments (Shaw et al, 1990), and these would not be evident in carbonate maps.…”