Geology Reference
In-Depth Information
(b)
Figure 12.8.
(b) Corestone-boulder of norite, and with spalled margins, Black Hill, western Murray Basin,
South Australia.
(a)
Figure 12.9.
(a) Intricate differential weathering at crystal scale in limestone, Galong Quarry, central New
South Wales.
coastal settings see page 313. Like their granitic counterparts, some flutings in limestone originate
beneath the land surface (Fig. 12.9a), as do gutters in sandstone (
Fig. 12.13)
.
Similarly, caves are
synonymous with carbonate and gypseous formations, but, though present in a few granitic
masses, they are not so common and well-developed. Though well represented in granitic terrains,
siliceous speleothems are also widely developed in some sandstone settings, e.g. the Flinders
