...Figure 4. ( A ) Silcrete plain southwest of lower Boteti River at ~912 m facing south (see profile Figure 5B ). Plain is underlain by silcrete of unknown depth, with scattered silcrete boulders on surface. Tree in mid-distance is about 2.0 m high. ( B ) Example of silcrete boulder from silcrete...

... the data points extremely well. The two other kriging regions are characterized by more elevation variation, and hence were less well fitted in the variogram modeling. The smaller area to the southeast of Thamalakane fault incorporates both lows and highs, with the Boteti river and its valley running...

...Figure 6 ( A ) View of incised channel of the Boteti. This river ceased flowing during the drought from the mid-1990’s until 2008. Photo: A.E. Moore. ( B ) View upstream in the channel of the Zambezi River from the Batoka Discordance across the Chimamba Rapids, which delimits the eastern...

... basement depths defined by boreholes; red dots and stars indicate basement depths defined by seismic surveys. White numbers in parentheses are depths to base of electrically conductive layer. White dashed lines indicate clusters of boreholes that do not reach basement. Rivers: BR—Boteti; CR—Cuando; LZR...

... channels that run perpendicular to the fault (Boro, Boronyane, Shashe, Nxotega; Figure 18 ), which allows some of the water to spill across into the Thamalakane River, which runs along scarp of the Thamalakane fault. The Thamalakane scarp has been breached to form the Boteti River. The local gradients...

...., 2009 ; 2019 ) 44 21.23°S, 24.27°E Gidikwe Ridge/Okwa Gorge near Boteti River ( Shaw et al., 1992 ) 7 approx. 22.34°S, 15.08°E Erb Tanks Rockshelter ( Mccall et al., 2011 ) 45 22.22°S, 22.39°E Okwa Valley (Tswaane) ( Shaw et al., 1992 ) 8 22.53°S, 14.80°E Rössing Cave speleothem ( Geyh...

...Figure 10. The distribution of alluvial and lacustrine sediments in north-eastern Botswana and southern Zambia. The alluvium of the Machili basin possibly extends further to the north-east as far as the Kafue River ( Thomas and Shaw, 1991 ). Limits of the older alluvial deposits reflect...