Quaternary geology of the Summer Isles region : a brief explanation of the geological map sheet Summer Isles special sheet

This Sheet Explanation provides a summary of the Quaternary strata (Figure 1) of the area covered by the Quaternary Geology 1:50 000 Special Sheet for the Summer Isles region, which is a joint onshore–offshore map published in 2011. The offshore Quaternary geology is largely based on new data acquired between 2005 and 2007. However, the eastern margin of The Minch succession is modified from the Sutherland and Little Minch 1:250 000 Sea Bed Sediments and Quaternary Geology map sheets. The onshore Quaternary geology is based on revision mapping between 2004 and 2009: the eastern portion from Loch Broom to Cnocan is a generalised compilation from BGS Scotland Sheet 101E Ullapool (Superficial & Bedrock) (in press); the central and southern portion is based on new mapping and supersedes the Quaternary geological linework on Scotland (Provisional Series) Sheets 101W Summer Isles, 91/100 Gairloch and 92 Inverbroom.