The humid tropics: weathering and laterites
521
Figure 20.16. Spheroidal weathering in basic lavas of the Gregory Rift Valley, Kabernet, Kenya.
B o d e n ~/'z/'/'//]~/J',/~z~~J/z/',/-/(/z/Z,
Tl'A M igra t or y
Colluvium U//////~////////~
Layer
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9
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9
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Zone IV
Zone III
Basal
Surface
Figure 20.17. Characteristic weathering profile over jointed granite (modified from Ruxton and Berry
(1961)).