Published online by Cambridge University Press: 01 May 2009
Following the original suggestion of Searles Wood, the Norwich Brickearth has been referred to the same phase of glaciation as the Basement clay of Holderness, which in turn has been correlated with the Scandinavian Drift of Durham. Recent work by Stather (1929) and by Bisat (1932, 1935) shows, however, that the Basement clay of previous authors (Wood, Lamplugh, Reid, and others) may be resolved into a drift (a) of Scandinavianorigin, together with (b) deposits of separate derivation; and the time now seems appropriate for a critical examination of the position of the Norwich Brickearth in the glacial sequence.