The Lochaber Geopark board describes the Great Eucrite ring complex centred around Achnaha. The ring complex consists of ring of Eucrite hills and marks the position of a subterranean magma chamber and its feeder pipe. Three ring complexes were described on the Ardnamurchan peninsula by J.E....
The Highlands has a rich, long and complex geological history dominated by the collision of tectonic plates, and involving uplift and mountain building, volcanic eruptions, glaciations events, and long periods of erosion and deposition, as well as extensive metamorphism of pre-existing rocks. This has resulted in three distinct terranes; Grampian Terrane, Northern Highland Terrane and the Hebridean Terrane, each characterised by different geological histories and rock types.
Lochaber’s geological history is recorded in rocks that spans over 570 million year ago, with the some of the oldest rocks in Lochaber being associated with the Moine Thrust. It encompasses two of the terranes, the Northern Highland Terrane and the Grampian Terrane, and contains four ancient volcanoes, delivering an exceptionally varied geodiversity and an outstanding geomorphology.
The Geopark Rock Routes have been produced by The Lochaber Geopark Association, an organisation concerned with promoting the geology and geomorphology of Lochaber.
The Lochaber Geopark Association has grouped the interpretation boards into five themed routes, which include volcanoes (western and eastern), mountain building, glaciations and strata and fossils. There are also six regional routes (Geotrails) that include various combinations of the interpretation boards. These include Ardnamurchan, Glen Coe, Glen Nevis, Glen Roy, Loch Leven, Morvern, Road to the Isles, Strontian and The Small Isles. Details of each of these Geotrails can be found at Lochaber Geopark website and as leaflets in Tourist Information and Visitor Centres.
A great set of resources to immerse yourself in the outstanding geology and scenery of Lochaber.