Retreat of the Late Pliocene and Lower Pleistocene Crag sea
Figure 3. Norwich Crag and Kesgrave Formations: Reconstructed drainage lines and provenances
of pebbles and palynomorphs. A. Norwich Crag Formation B. Kesgrave ('Sudbury') Formation
C. Kesgrave ('Colchester') Formation (After Rose 2000, 2001)
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Essex Naturalist (New Series) 18 (2001)