Generalised digital geological map data for England, Wales and Scotland based on BGS’s series of 1:250 000-scale maps published between 1977 and 1993.

Geological areas are labelled/attributed based on their lithostratographical (strata or rock layers), chronostratographical (ages of rock strata) or lithodemic nomenclature and their composition (rock type/lithology), arranged in two themes for bedrock geology and faults.

Geological maps are the foundation for many other types of earth science-related maps and are of potential use to a wide range of customers.