Arbroath to Auchmithie - trail guide about the geology and features of this stretch of coast.
British Geological Survey website offers "interactive pages which will allow you to wander around Britain, zoom into your favourite areas and investigate the geology of the country."
Geology of Scotand - fabulous resource from SNH - PDF's with everything you ever wanted to know.
Geolological information about Seil and the surrounding area, from electricscotland.com
Geology of the Northwest Highlands - info from Geopark.org.
General geology discussion with some reading recommendations.
Knockan Crag National Nature Reserve near Ullapool has some geological info on the region.
Scottish Geology provides a wealth of background and information.
(Updated 25-Aug-2015 )