Publisher's Synopsis
Excerpt from The Physical Geology of the Don Basin
Down to Towie the course of the Don is strictly transverse to the grain Of the schists and epidiorite sills from Towie to the sea the river wanders in a meaningless sort Of way over schist, gneiss, and granite.
At Towie and in the neighbourhood of Kildrummy it crosses Middle Old Red Sandstone; a short distance from the sea it again em counters what is presumably the same formation. This, considered along with the occurrence of other Old Red outliers; large and small, in Aberdeenshire and Banffshire from the coast as far inland as Tomin toul, suggests that at least from Towie to the sea the Don began its work on a platform of Middle Old Red and perhaps later deposits.
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