Geology Reference
In-Depth Information
platforms disperses in the surrounding regolith. Such systems of connected channels develop
only on extensive, gently-sloping surfaces. Where relics of gutters are preserved on comparatively
small blocks
(Fig. 9.15)
,
it is inferred that the host blocks are remnants of a former dome or
platform.
(a)
(c)
(b)
Figure 9.14.
(a) Gutters in granite exposed in channel floor, Ashburton River, northwest of Western Australia.
(b) Pot-hole, with grinders (cobbles), in bed of Umgeni River, KwaZulu/Natal. (c) Meanderig
gutter on Ampidianambilahy, Andringitra Massif, Madagascar.
