AN ABSOLUTE CHRONOLOGY FOR THE RAISED BEACH AND ASSOCIATED DEPOSITS AT SEWERBY, EAST YORKSHIRE, ENGLAND

The raised beach sediments revealed in the cliffs at Sewerby, East Yor kshire are widely regarded as Ipswichian in age. Previously reported e vidence for this dating is reviewed and new results from a range of lu minescence dating techniques applied to the blown sand deposit overlyi ng the raised beach are reported. These provide the first absolute dat e for the Sewerby site of 120.84 +/- 11.82 ka, which places the blown sand at the boundary between oxygen isotope stages (OIS) 5e and 5d. As the underlying raised beach is little older than the blown sand, it p robably formed during OIS Stage 5e as suggested by the faunal evidence .