At the first stop we will view the fluvial Wealden sandstones and discuss their palaeogeographic context. Just before lunch, we will take in an overview of the basin where we will see evidence in the landscape of early Tertiary (Alpine) inversion of the Weald Basin fill, which formed a large anticlinal dome that is expressed in the present-day topography south of London (North and South Downs). We then visit a working quarry in the Folkestone Sands Formation of the Lower Greensand Group, deposited under rising sea-level which culminated in the Chalk. We will study the sedimentological character, facies architecture and lithological heterogeneity of these sandstones, which contain abundant evidence of tidal influence and are interpreted to have been deposited by sand waves within the intra-cratonic "Lower Greensand Seaway".