A trimline method for defining the upper limit of Loch Lomond Advance glaciers: examples from the Loch Leven and Glen Coe areas
- 1 March 1981
- journal article
- Published by Geological Society of London in Scottish Journal of Geology
- Vol. 17 (1) , 49-64
- https://doi.org/10.1144/sjg17010049
Abstract
Synopsis: Trimlines, indicated by marked contrasts between smooth ice-moulded and severely frost-affected bedrock surfaces, are used to map Loch Lomond Advance limits in an area extending from Rannoch Moor in the east, to North Ballachulish in the west. Supplementary evidence is provided by the distribution of hummocky moraines, thick till, erratics, fossil periglacial screes, lobes and terraces, and by abundant glacial markings. Reconstructed glacier surfaces indicate two large outlet glaciers flowing westwards towards Loch Linnhe from an ice cap on Rannoch Moor. The two glaciers were joined by ice flowing from numerous corries and tributary troughs.Keywords
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