DIGITAL GEOLOGICAL MAP PRODUCTION IN THE UNITED-KINGDOM - MORE THAN JUST A CARTOGRAPHIC EXERCISE

Geological maps produced by national geological surveys have changed little since 1815. Such maps have many disadvantages however: They are time-limited statements, constrained by the extent of data and understanding of geological processes. With the ever-increasing volumes of new data, the need to rapidly update geological maps has become pressing. In the BGS this need has led to the creation of digital, spatially related geological databases which offer the potential to generate customised geological maps with improved clarity, consistency and quality over traditional map series. The prime advantage is an ability to capture and link the spatial and non-spatial geological data and attributes from maps and other sources. A production system for 1:10 000-scale digital geological maps is now operational and the production of thematic maps at this scale is being investigated. A 1:50 000 scale map series is planned. Although there have been technical and personnel difficulties, a system to provide geological information tailored to the user's individual requirements, is well advanced.