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The Ballyvoyle Till (Watts, 1959) was originally described by Wright and Muff (1904) as a boulder clay deposited by southerly-moving ice of Inland, northern origin. They regarded this advance as having post~dated one of Irish Sea origin along the south coast. While Watts (1959) considered that the two ice masses were broadly contemporaneous, Synge (1977) suggested that the glacigenic sequence predated the deposition of the underlying raised beach and was subsequently soliflucted downslope to Its present stratigraphic position overlying the raised beach unit.