The portal provides access to over 7 000 high resolution viewing images of almost all small and medium scale maps produced by the British Geological Survey since mapping started in 1832 right up to recently released maps in 2014. It incorporates all the earlier maps and history pages that were previously made available through the BGS 'Historical maps of the Geological Survey of Great Britain and Ireland' web resource. Viewing the maps online is completely free and a range of paper products is available for purchase. Digital copies are available for a licence fee. It includes:
The portal excludes the larger scale mapping of BGS, the 1:10 560/1:10 000 geological maps and field slips and also the detailed Applied Geology Mapping thematic sets.
For a small number of maps no scan exists, however, for completeness we provide the map details but without a link to an image.
Map series can be located in two ways:
For users who just want to consult the latest published editions of the 1:63 360/1:50 000 maps, 'Quick links' have been provided on the portal home page. These show the latest map available for a given sheet number and type of map (e.g. Solid, Drift, Bedrock, Superficial, etc.). The main listings for these series under England and Scotland contain information on all editions, the most recent and superseded earlier published editions.
After selecting a particular map series you are taken to a listing page where the maps can be browsed by sheet number or via a simple search facility. A link to a graphic index map showing the sheet outlines can be found in the 'See also' navigator on the top right if an index map is available.
The information on the 'listing pages' is brief, to see the full details for a map click the full entry link. This gives the full information for the map and several links:
The information about a map is normally a transcription from the map itself. Sometimes key information such as the title may not be actually printed on the map. Where this is the case the information is supplied in square brackets, e.g. [Kirk Maiden]. Information in square brackets means the information is supplied by the cataloguer and is not transcribed from the item.