Geology Reference
In-Depth Information
(b)
Figure 1.13.
(b) Fault zones exploited by weathering and erosion, Coast Mountains, British Columbia
(Department of Lands, Forests and Water Resources, British Columbia).
Figure 1.14.
The Vaal River crossing the Vredefort Dome at Parys, South Africa (du Toit, 1954).
State, South Africa (Fig. 1.14). The river must have developed at least the main features of its pre-
sent course on a much higher surface prior to encountering the Vredefort structure.
According to King (1942) it is superimposed from Karroo (late Palaeozoic-Early Mesozoic) strata
which once completely overlay the region. Even so, the high discharge of the Vaal and positive
