Reference System

MD_ReferenceSystem:

referenceSystemIdentifier:

RS_Identifier:

code:

http://www.opengis.net/def/crs/EPSG/0/27700

code:

OSGB 1936 / British National Grid (EPSG::27700)

Identification

Data Identification:

citation:

Citation:

Title:

BGS Geology 50k Linear version 9

Date:

CI_Date:

Date Type:

creation

date:

2016

Identifier:

RS_Identifier:

code:

http://data.bgs.ac.uk/id/dataHolding/13608550

Abstract:

Linear features (shown as polylines) in BGS Geology 50k are used to portray geological features and concepts that are normally depicted on maps in linear form, rather than polygonal form. The data is presented at 1:50 000 scale. Onshore coverage is provided for England, Scotland, Wales and the Isle of Man. Approximately 99% coverage is available and BGS is committed to completing the coverage, and ongoing updates as part of its ongoing national survey. Linear features are associated most closely with the bedrock theme either as an intrinsic part of it for example marine bands or affecting it in the case of faults. However, landform elements are associated with both bedrock and superficial deposits. The linear features are organised into seven main categories: Alteration areas: areas indicating zones of change to the pre-existing rocks due to the application of heat and pressure that can occur round structural features such as faults and dykes. The linear feature defines the estimated boundary of the change. Fault: where a body of bedrock has been fractured and displaced by a large-scale process affecting the earth’s crust. The linear feature is used to represent a 3-dimensional plane of disruption on a 2-dimensional map. The line itself typically defines a broader zone of displacement/failure, rather than an individual fault plane. Fold Axis: where strata are bent or deformed resulting from changes or movement of the earth’s surface creating heat and pressure to reshape and transform the original horizontal strata. Folds appear on all scales, in all rock types and from a variety of causes. The linear feature is used to represent the “hinge” of the folds (which is a 3-dimensional plane being represented on a 2-dimensional map). Fossil horizon: where prolific fossil assemblages occur and can be used to help establish the order in which deposits were laid down (stratigraphy). These horizons allow correlation where sediments of the same age look completely different due to variations in depositional environment. The linear feature is used to represent a layer of material that is typically too thin to be shown as a polygon on the map. Landforms: define the landscape by its surface form; these include glacial features such as drumlins, eskers, and ice margins. The linear feature is typically used to represent a boundary, or centre line that defines the form of the feature. Mineral vein: where concentrations of crystallised mineral occur within a rock, they are closely associated with faulting but may occur independently. The linear feature defines the estimated extent of the mineralised vein, but does not indicate the volume of wall rock that has been affected. Rock: lines representing beds of notable geological materials and key marker beds, e.g., coal, gypsum, ironstone relevant to the Bedrock theme. The linear feature is used to represent a layer of material that is typically too thin to be shown as a polygon on the map. 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.

Point of Contact:

Responsible Party:

Individual Name:

Enquiries

Organisation Name:

British Geological Survey

Contact Info:

CI_Contact:

phone:

CI_Telephone:

voice:

0115 936 3143

facsimile:

0115 936 3276

Address:

Delivery Point:

Environmental Science Centre, Nicker Hill, Keyworth

city:

NOTTINGHAM

administrative Area:

NOTTINGHAMSHIRE

Postal Code:

NG12 5GG

country:

United Kingdom

e-mail:

[email protected]

role:

distributor

Responsible Party:

Individual Name:

Enquiries

Organisation Name:

British Geological Survey

Contact Info:

CI_Contact:

phone:

CI_Telephone:

voice:

0115 936 3143

facsimile:

0115 936 3276

Address:

Delivery Point:

Environmental Science Centre, Nicker Hill, Keyworth

city:

NOTTINGHAM

administrative Area:

NOTTINGHAMSHIRE

Postal Code:

NG12 5GG

country:

United Kingdom

e-mail:

[email protected]

role:

pointOfContact

Resource Maintenance:

MD_MaintenanceInformation:

maint. / update frequency:

irregular

Graphic overview:

Browse Graphic:

File Name:

https://resources.bgs.ac.uk/images/geonetworkThumbs/41a7362c-1d22-8197-e063-3050940adcc6.png

Descriptive Keywords:

Keywords:

keyword:

https://inspire.ec.europa.eu/theme/ge

keyword:

Geology

Thesaurus Name:

Citation:

Title:

GEMET - INSPIRE themes, version 1.0

Date:

CI_Date:

date:

2008-06-01

Date Type:

publication

Keywords:

keyword:

UK Location (INSPIRE)

keyword:

Data

keyword:

GIS

keyword:

Geology

keyword:

EGDI

keyword:

Digital maps

keyword:

Maps

Thesaurus Name:

Citation:

Title:

BGS Thesaurus of Geosciences

Date:

CI_Date:

date:

2022

Date Type:

revision

Keywords:

keyword:

UK Location (INSPIRE)

keyword:

http://www.data.gov.uk

keyword:

EGDI

keyword:

https://data.geoscience.earth/ncl/project/_48

Type:

dataCentre

Keywords:

keyword:

NERC_DDC

Resource Constraints:

MD_LegalConstraints:

Access Constraints:

otherRestrictions

Other Constraints:

license

Other Constraints:

Either : (i) the dataset has not been formally approved by BGS for access and use by external clients under license; and / or (ii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted before the dataset can be provided to, or accessed by, BGS staff or external clients. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant access restrictions. This staff member should revert to the IPR Section ([email protected]) for advice, should the position not be clear.

Other Constraints:

http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/INSPIRE_Directive_Article13_1d

MD_LegalConstraints:

Use Constraints:

otherRestrictions

Other Constraints:

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other Constraints:

The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section ([email protected]) if further advice is required with regard to permitted usage.

Spatial Representation Type:

vector

Spatial Resolution:

Resolution:

Equivalent Scale:

Representative Fraction:

denominator:

50000

language:

eng

topicCategory:

geoscientificInformation

Extent:

Geographic Element:

Geographic Bounding Box:

westBoundLongitude:

-7.2500

eastBoundLongitude:

2.4000

southBoundLatitude:

50.1200

northBoundLatitude:

60.8500

Geographic Description:

Geographic Identifier:

RS_Identifier:

authority:

Citation:

Title:

ISO 3166_2

Date:

CI_Date:

Date Type:

revision

date:

2009

code:

GBN

Geographic Description:

Geographic Identifier:

RS_Identifier:

authority:

Citation:

Title:

British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus

Date:

CI_Date:

Date Type:

creation

date:

1979

code:

GREAT BRITAIN [id=139600]

Temporal Element:

TemporalExtent:

extent:

begin / end:

begin:

unknown

end:

<2016

Distribution

Distribution:

Distribution Format:

Format:

Format Name:

MapInfo TAB file

version:

Format:

Format Name:

ESRI shapefile

version:

Format:

Format Name:

Other vector formats are available on request.

version:

Distributor:

Distributor Contact:

Responsible Party:

Individual Name:

Enquiries

Organisation Name:

British Geological Survey

Contact Info:

CI_Contact:

phone:

CI_Telephone:

voice:

0115 936 3143

facsimile:

0115 936 3276

Address:

Delivery Point:

Environmental Science Centre, Nicker Hill, Keyworth

city:

NOTTINGHAM

administrative Area:

NOTTINGHAMSHIRE

Postal Code:

NG12 5GG

country:

United Kingdom

e-mail:

[email protected]

role:

distributor

Transfer Options:

Digital Transfer Options:

onLine:

CI_OnlineResource:

linkage:

https://nora.nerc.ac.uk/id/eprint/540337/

protocol:

WWW:LINK-1.0-http--link

name:

User Guide : BGS Geology 50k v9

description:

British Geological Survey. 2025 User Guide : BGS Geology 50k v9 (OR/24/041)

function:

information

Digital Transfer Options:

onLine:

CI_OnlineResource:

linkage:

https://www.bgs.ac.uk/datasets/bgs-geology-50k-digmapgb/

protocol:

WWW:LINK-1.0-http--link

name:

BGS Geology 50K

function:

order

Digital Transfer Options:

onLine:

CI_OnlineResource:

linkage:

https://www.bgs.ac.uk/datasets/bgs-geology/

protocol:

WWW:LINK-1.0-http--link

name:

BGS Geology: onshore digital geological map of Great Britain data

function:

information

Digital Transfer Options:

onLine:

CI_OnlineResource:

linkage:

https://doi.org/10.5285/6fd09134-db3e-4bda-ab55-2c556e018254

name:

Digital Object Identifier (DOI)

description:

British Geological Survey. (2025). BGS Geology 50k Linear version 9. British Geological Survey. (Dataset). https://doi.org/10.5285/6fd09134-db3e-4bda-ab55-2c556e018254

function:

information

Data Quality

Data Quality:

Scope:

DQ_Scope:

level:

dataset

Level Description:

MD_ScopeDescription:

other:

dataset

Report:

Domain Consistency:

Result:

Conformance Result:

specification:

Citation:

Title:

INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date:

CI_Date:

Date Type:

publication

date:

2011

explanation:

See the referenced specification

pass:

Domain Consistency:

Result:

Conformance Result:

specification:

Citation:

Title:

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date:

CI_Date:

Date Type:

publication

date:

2010-12-08

explanation:

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

pass:

Lineage:

LI_Lineage:

statement:

The BGS Geology 50k Linear dataset is a digital representation of the geology of Great Britain at 1: 50 000 scale. It is a compilation of digital tiles derived from previously published and unpublished maps, archive information and results of field mapping campaigns. The mapping, description and classification of rocks are based upon the interpretations and evidence available at the time of survey, or time of re-evaluation for modifications/correction. The data has been digitally captured from paper record, originally using Bentley MicroStation and latterly ESRI ArcGIS software. Post capture processing has occurred to combine geometry and attribution from existing BGS data resources. Quality control checks are run on individual data batches prior and subsequent to their integration into the main data mosaic. The source dataset is dynamic in nature with periodic data releases. More information in the BGS Geology50k V9 User Guide. https://www.bgs.ac.uk/datasets/bgs-geology/

Metadata

File Identifier:

41a7362c-1d22-8197-e063-3050940adcc6

language:

eng

Resource type:

dataset

Metadata Contact:

Responsible Party:

Organisation Name:

British Geological Survey

Contact Info:

CI_Contact:

phone:

CI_Telephone:

voice:

+44 115 936 3100

Address:

Delivery Point:

Environmental Science Centre,Keyworth

city:

NOTTINGHAM

administrative Area:

NOTTINGHAMSHIRE

Postal Code:

NG12 5GG

country:

United Kingdom

e-mail:

[email protected]

role:

pointOfContact

Date Stamp:

2025-11-03

Metadata Standard Name:

http://vocab.nerc.ac.uk/collection/M25/current/GEMINI/

Metadata Standard Name:

UK GEMINI

Metadata Standard Version:

2.3

Dataset URI:

http://data.bgs.ac.uk/id/dataHolding/13608550