c. 450,000 BC
Wickhambrook: Anglian Glaciation
This great glaciation covered most of England, reaching as far south as Essex. When it retreated it left a thick deposit of boulder clay (Lowestoft Till) on the central part of Suffolk; this is known to be 69m (226 feet) thick at Wickhambrook. Melt-waters from the ice-sheet drained south-east and east, producing the valleys of the Waveney, Deben, Gipping and Stour.
Clark, C.D., Gibbard, P.L. and Rose, J., ‘Pleistocene glacial limits in England, Scotland and Wales’ in J. Ehlers and P.L. Gibbard (eds), Quaternary Glaciations – Extent and Chronology. Part I: Europe, Developments in Quaternary Science 2, Elsevier, Amsterdam & London 2004.
Catt, J.A. et al., ‘Quaternary: ice sheets and their legacy’ in P.J. Brenchley and P.F. Rawson (eds), The Geology of England and Wales, Geological Society, London, 2nd ed. 2006.