BGS Geology 1:50 000 Scale is the definitive geology ‘map’ providing details about the composition and structure of the Earth in Great Britain. Geological areas in England, Wales and Scotland are described in four theme and labelled/attributed with a name based on their lithostratographical, chronostratographical or lithodemic nomenclature and their composition (rock type or lithology):

- bedrock
- superficial deposits/’drift’
- mass movement
- artificial ground  

The product has GB-wide coverage and is the basis for other types of earth science-related mapping. In combination with other BGS datasets, typical uses cases include identifying natural resources (energy; water; minerals), construction conditions (excavations; foundations), soils and landscapes (peatlands; uplands), and hazards (flooding; landslides; contamination).