GT I. Geological map 1:25,000 GT II. Geoanthropic map 1:25,000 GT III. Geological map of urban areas 1:5,000 Geological map 1:50,000 Geological map of Catalonia 1:250,000 Map of lithological groups of Catalonia 1:250,000 3D model of geological surfaces of Catalonia Three-dimensional representation of main stratigraphic units and structures of Catalonia Other geological maps Geologic time: charts