“…THE Dalradian Supergroup of Scotland and Ireland (Harris et al, 1994) is a thick sequence of Neoproterozoic marine sedimentary rocks and basic igneous rocks that was folded and metamorphosed during the Early Palaeozoic Caledonian Orogeny. Four phases of regional deformation are recognized within the Dalradian sequence by most workers (Harris et al, 1976;Harte et al, 1984;Fettes, 1985, Ahmed-Said andTanner, 2000). D1 and D2 resulted in the development and subsequent shearing of major recumbent folds, including the Tay Nappe, and produced the inverted Dalradian succession.…”