Anatomy of a Lower Permian aeolian sandstone complex, Southern Scotland

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Abstract
Synopsis: Aeolian sandstones of Lower Permian age occur in the centres of fault-bounded intermontane basins in the southern Uplands of Scotland. At Locharbriggs, Dumfriesshire, three quarries expose vertical faces up to 20 metres high and 150 metres long in which the aeolian cross-lamination is cut by three different bounding surfaces of different hierarchical order. These surfaces indicate that the aeolian sandstones can be interpreted in terms of dunes climbing over larger bedforms called draas. Analysis of the cross-lamination and grain sizes show that the bedforms responsible for the strata were of transverse type with longitudinal elements.