CHAPTER IX.--THE GEOLOGY OF LOCH MAREE AND NEIGHBOURHOOD,

BY WILLIAM JOLLY, F.G.S., F.R.S.E.

Long controversy--Attack by eminent geologists--Others enter the lists--Prospect of early peace--Conditions of the problem well exhibited round Loch Maree--Succession of rocks--Hebridean gneiss--Torridon red sandstone--Quartzite--Its annelid borings--Its fucoid remains--Limestone--The "Logan" rock--The eastern gneiss--The controversy--Other noteworthy geological phenomena--Faults--Glaciation--Denudation--Rock junctions--The valley of the hundred hills--Curious impressions on Torridon sandstone near Talladale--The Fionn and Dubh loch--The Trias at Loch Gruinard 271