BGS Geology - 50k (DiGMapGB-50) Bedrock version 8
Data identifying landscape areas (shown as polygons) attributed with geological names and rock type descriptions. The scale of the data is 1:50 000 scale providing bedrock geology. Onshore coverage is provided for all of England, Wales, Scotland and the Isle of Man. Bedrock geology describes the main mass of solid rocks forming the earth's crust. Bedrock is present everywhere, whether exposed at surface in outcrops or concealed beneath superficial deposits or water bodies. The bedrock geology of Great Britain is very diverse and includes three broad classes based on their mode of origin: igneous, metamorphic and sedimentary. The data includes attribution to identify each rock type (in varying levels of detail) as described in the BGS Rock Classification Scheme (volumes 1-3 ). The bedrock has formed over long periods of geological time, from the Archean eon some 7500 million years ago, to the relatively young Pliocene, 58 million years ago. The age of the rocks is identified in the data through their BGS lexicon name (published for each deposit at the time of the original survey or subsequent digital data creation). For stratified rocks i.e. arranged in sequence, this will usually be of a lithostratigraphic type. Other rock types for example intrusive igneous bodies will be of a lithodemic type. More information on the formal naming of UK rocks is available in the BGS Lexicon of Named Rock Units. Geological names are based on the lithostratigraphic or lithodemic hierarchy. The lithostratigraphic scheme arranges rock bodies into units based on rock-type and geological time of formation. Where rock-types do not fit into the lithostratigraphic scheme, for example intrusive, deformed rocks subjected to heat and pressure resulting in new or changed rock types; then their classification is based on their rock-type or lithological composition, using visible features such as texture, structure, mineralogy. The data are available in vector format (containing the geometry of each feature linked to a database record describing their attributes) as ESRI shapefiles and are available under BGS data licence.
dataset
http://www.bgs.ac.uk/products/digitalmaps/DiGMapGB_50.html
function: information
http://data.bgs.ac.uk/id/dataHolding/13607012
eng
OGP
urn:ogc:def:crs:EPSG::27700
geoscientificInformation
publication
2008-06-01
GIS
Geology
Digital maps
Maps
Data
revision
2011
NERC_DDC
-8.3400
2.7000
60.8700
49.8500
revision
2009
GBN
creation
1979
GREAT BRITAIN [id=139600]
2016
creation
2016
irregular
The data shows bedrock polygons, for further information http://www.bgs.ac.uk/downloads/start.cfm?id=644 The data is processed by improvements and additions of new geological mapping to the master geodatabase; comprising all BGS published maps at this scale.
publication
2011
false
See the referenced specification
publication
2010-12-08
false
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
Unknown
Unknown
The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (DigitalLE@bgs.ac.uk) if further advice is required with regard to permitted usage.
otherRestrictions
British Geological Survey
Environmental Science Centre,Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
+44 115 936 3100 Ex:3585
pointOfContact
British Geological Survey
Environmental Science Centre,Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
+44 115 936 3100 Ex:3146
author
British Geological Survey
Environmental Science Centre,Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
+44 115 936 3143
+44 115 936 3276
distributor
NERC-BGS Cartographer
British Geological Survey
Environmental Science Centre,Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
+44 115 936 3100 Ex:3585
pointOfContact
2018-08-24