Code definitions of archetypes and subarchetypes using uppercase and lowercase letters as primary archetype designators and lowercase alphabet subscripts as secondary subarchetype refinements to indicate the composition and nature of barriers, beaches, beach ridges, channels, cliffs, coral reefs, deltas, dunes, flats (and tidal banks), ice, lagoons and lagoonal systems, lakes, mountains, rock, (glacial) till, uplands, and wetlands. Numerals are provided for shore-parallel configuration terms (overall alongshore coastal belt configuration in plan view).