Digital Geological Map Data of Great Britain - 625k (DiGMapGB-625) Bedrock Version 5

Dataset title Digital Geological Map Data of Great Britain - 625k (DiGMapGB-625) Bedrock Version 5
Dataset creators British Geological Survey
Dataset theme Geoscientific Information
Dataset abstract

The DiGMapGB-625 Bedrock dataset comprises digital geological map data at 1:625 000 scale. It provides coverage for all of England, Wales, Scotland, the Isle of Man and Northern Ireland. This version 5 dataset was created primarily from the 1:50 000 scale DiGMapGB-50 version 3 dataset (released in 2006) by generalisation involving cartographic selection, modification, simplification or exaggeration. The attributes and nomenclature used follow those used on the printed maps. The geology is fitted to a relevant topographic base at the time of production.

The data has separate themes for bedrock, and igneous dykes together with a linear theme for geological faults. Each geological area (or polygon) is labelled or attributed with a name (based on its lithostratographical, chronostratigraphical or lithodemic nomenclature) and its composition (rock type or lithology).

The data, available in vector format is downloadable from the website, GIS line and polygon data. (ESRI, MapInfo, KML, others available by request). BGS licensing terms and conditions apply to external use; non commercial use is free of charge.

Glossary

Chronostratigraphical classification: The organization of rock bodies into units on the basis of their lithologic properties and their stratigraphic relations.

Lithodemic: Lithodemic terms are necessary for rocks that cannot be successfully accommodated in the lithostratigraphical scheme. They generally apply to intrusive, highly deformed and/or highly metamorphosed and genetically mixed assemblages of rocks.

Lithostratigraphical classification: The organization of rock bodies into units on the basis of their lithologic properties and their stratigraphic relations.

Lithologic: The description of the macroscopic features of a rock, e.g. its texture, structure, mineralolgy.

Stratigraphic: Correlation of rock units in terms of the time of formation.

Dataset content dates 1995
Dataset spatial coverage United Kingdom
Dataset supply format VECTOR - SHP, TAB, DGN Files
Dataset language English-United Kingdom
Dataset discovery metadata record Discovery Link to the dataset's BGS Discovery Metadata record.
Also available as ISO19115/19139 XML.
Dataset publisher British Geological Survey
Dataset publication date 2008
Dataset digital object identifer (DOI) doi:10.5285/e1a2ebc7-fe66-4deb-836c-f201f0f96a5b
Dataset citation text Digital Geological Map Data of Great Britain - 625k (DiGMapGB-625) Bedrock Version 5 British Geological Survey 2008
Constraints and terms of use The usual BGS licensing terms and conditions apply to external use of the data. Data licence required. Free for commercial, research and public use. Acknowledge the material.
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Further information DiGMapGB-625 product