Radiocarbon ages for a glaciomarine bed associated with the maximum of the Loch Lomond Readvance in west Benderloch, Argyll

Abstract

Synopsis Radiocarbon ages on shells of the high arctic marine mollusc Portlandia arctica collected from a glaciomarine bed immediately within the terminal position of the former Loch Lomond Readvance Creran glacier and probably overridden by it suggest that its maximum extent was reached during the second half (10 500–10 000 B.P.) of the Loch Lomond stade period and possibly as late as 10 000 B.P. Arctic marine faunas which flourished in the vicinity of this tidewater glacier and the glacier of similar age which occupied Loch Lomond may likewise date from late in the Loch Lomond stade.