Geology Reference
In-Depth Information
(f)
(g)
Figure 1.1.
(f) Glaciated landscape in the Sierra Nevada of California (United States Geological Survey).
(g) Duricrusted mesa in northwest Queensland with laterite developed on granite (CSIRO)
Australia.
of inspection of air photographs. Boulders and bornhardts, koppies and nubbins, and a range of
minor forms, notably such features as basins and flutings, are characteristic of granitic terrains
(
Figs 1.3a, b, c, d, e and f).
Granite hills, and particularly bornhardts, standing in isolation as insel-
bergs, together with the plains that are the most extensive granite form, give rise to the inselberg
landscapes or Inselberglandschaften that so captured the imaginations of early travellers (Toit,
1954) in eastern and southern Africa, India and central Australia
(
Figs 1.2a and b)
.
