Figure 1: Model of fluvial activity over a glacial/interglacial/glacial cycle (after Vandenberghe 1993, 1995; Bridgland 2000; Maddy et al. 2001; Gibbard & Lewin 2002). S = sedimentation; PS = preserved sedimentation; I = incision (floodplain downcutting); E = erosion.