The Building of the British Isles: A Study in Geographical Evolution

appear base basin beds beneath Britain British Carboniferous carried central Chalk Channel clays close coast complete conglomerate considerable consist contain continuous covered deposits direction district east eastern edition elevation England English Eocene epoch estuarine evidence existed extended fact feet thick formation formed fossils France freshwater geographical Geol Geology gradually greater higher hills History indicate Ireland island Jurassic known lake land later less limestones limits London Lower marine marls mass material nearly northern Notes occupied occur Ocean Old Red older originally pass pebbles period Plate Pleistocene Pliocene portions Portrait position present probably Professor regard region remains rest rivers rocks round sands sandstones Scotland seems shales shallow shore side Silurian similar southern stones strata submerged subsidence suggested suppose surface thin tract Trans Upper valley vols Wales Wealden western whole