ABSTRACT
The Wadden Sea, the Wash, the Bay du Mont-St. Michel, and the Bassin d’Arcachon. Along the remaining coasts of Britain, France, and Portugal small areas with intertidal deposits occur in estuaries, rias, and bays. In the White Sea the tidal flats are probably extensive but not much studied. In the fjords of Norway and the Faroer, tidal deposits are virtually absent. Many river mouths on tidal coasts contain small areas of intertidal deposits along estuaries and deltas. They are mentioned where they have been the object of sediment studies. For a number of large coastal areas sedimentological information on intertidal deposits is limited and only a general description can be given. Most intertidal deposits are partly or entirely covered with vegetation, which usually consists of salt marsh or mangrove. Salt marshes occur predominantly in cold or temperate climates, although some tropical salt marshes do occur.
