Note 22 — Chapter VII · AUSTRALIA; NEW ZEALAND; CAPE OF GOOD HOPE.
Reading edition
The Rev. W. B. Clarke, however, states, to my surprise (“Geolog. Proceedings,” vol. iii, p. 422), that the sandstone in some parts is penetrated by granitic dikes: such dikes must belong to an epoch altogether subsequent to that when the molten granite acted on the clay-slate.