View of a glacial erratic south of Corrie, Arran, Buteshire


South of Corrie, Arran. An erratic, a granite boulder ice-transported eastwards from the main Northern Granite mass during the last glaciation. Erratics are a characteristic feature of glaciated regions and are common on Arran.

Most of the erratic boulders and blocks of Arran are of local origin, a phenomenon thought to be due to the protecting influence of the local ice-cap. It is estimated that these large erratics can be up to 400 tons in weight.

SCRAN ID: 000-000-146-600-C; British Geological Survey