Enviro + Geo Insight - GIS schema: Geology (10k)

10k Availability

Layer name: Geology_10K-Availability_10K_BGS

This is a polygon based dataset that provides an indication on the coverage of 1:10,000 scale geology data for each map sheet provided by the British Geological Survey (BGS) across England, Wales and Scotland. Records include; the map sheet number; confirmation of full, partial or no coverage for the sheet and the individual coverage for superficial geology, bedrock geology, mass movement deposits, artificial ground, and linear features.

Geometry: Polygon

Coverage: England, Scotland and Wales

Schema: 

Artificial and made ground (10k)

Layer name: Geology_10K-Artificial_and_Made_Ground_10K_BGS

This is a polygon based dataset of artificial or man-made ground, which indicates areas where the ground surface has been significantly modified by human activity, at 1:10,000 scale across England, Wales and Scotland. There is approximately 30% coverage at the moment and should be used in conjunction with the 10k availability dataset named Geology_10k_Availability_10K_BGS. Records include descriptions of the Lexicon code and Rock Classification Scheme (RCS). 

There are six types of artificial ground including:

• Infilled ground - original geology has been removed and at least in part back filled (including waste or landfill sites)
• Landscaped ground - surface has been reshaped e.g. for recreation and amenity use
• Made ground - man made features e.g. spoil heaps; 
• Reclaimed ground - landfill where new ground is created e.g. draining of submerged wetlands
• Worked ground - where ground has been removed e.g. road cuttings
• Disturbed ground - shallow or near surface workings where distinction cannot be made between made and worked ground. 

Due to the constantly changing nature of land use and re-use/redevelopment caution must be exercised when using this data as it represents a snapshot in time rather than an evolving picture hence the data may become dated very rapidly.

Geometry: Polygon

Coverage: England, Scotland and Wales

Schema: 

Superficial geology (10k)

Layer name: Geology_10K-Superficial_Geology_10K_BGS

This is a polygon based dataset of superficial geological deposits mapped at 1:10,000 scale across England, Wales and Scotland. Also known as 'drift', these are the youngest geological deposits, formed during the Quaternary, and they rest on older deposits or rocks referred to as bedrock. There is approximately 30% coverage at the moment and should be used in conjunction with the 10k availability dataset named Geology_10k_Availability_10K_BGS. Records include descriptions of the Lexicon code, Rock Classification Scheme (RCS) and the two part code to label geological units.

Geometry: Polygon

Coverage: England, Scotland and Wales

Schema: 

Landslip (10k)

Layer name: Geology_10K-Landslip_10K_BGS

This is a polygon based dataset of landscapes affected by mass movement, where deposits have moved down slope under gravity to form landslips, mapped at 1:10,000 scale across England, Wales and Scotland. There is approximately 30% coverage at the moment and should be used in conjunction with the 10k availability dataset named Geology_10k_Availability_10K_BGS. Records include descriptions of the Lexicon code, Rock Classification Scheme (RCS) and the two part code to label geological units. Caution should be exercised with this data; historically BGS has not always recorded mass movement events and due to the dynamic nature of occurrence significant changes may have occurred since the data was released.

Geometry: Polygon

Coverage: England, Scotland and Wales

Schema: 

Bedrock geology (10k)

Layer name: Geology_10K-Bedrock_Geology_10K_BGS

This is a polygon based dataset of bedrock geology mapped at 1:10,000 scale across England, Wales and Scotland. There is approximately 30% coverage at the moment and should be used in conjunction with the 10k availability dataset named Geology_10k_Availability_10K_BGS. Records include descriptions of the Lexicon code, Rock Classification Scheme (RCS) and the two part code to label geological units. Bedrock geology falls under one of three broad classes based on their mode of origin; igneous, metamorphic and sedimentary, and are named based on the lithostratigraphic or lithodemic hierarchy.

Geometry: Polygon

Coverage: England, Scotland and Wales

Schema: 

Bedrock faults and other linear features (10k)

Layer name: Geology_10K-Bedrock_Faults_and_Linear_Features_10K_BGS

This is a line based dataset of linear geological features across England, Wales and Scotland at the ground or bedrock surface mapped at 1:10,000 scale. There is approximately 30% coverage at the moment and should be used in conjunction with the 10k availability dataset named Geology_10k_Availability_10K_BGS. 

The linear features are organised into seven main types:

• Rock - marker beds with distinct physical characteristics or fossil content 
• Fossil horizons - prolific fossil assemblages which can help establish stratigraphy
• Fault - bedrock fractured and displaced by a large scale process
• Fold axis - where strata are bent or deformed due to changes or movement of the earth's surface creating heat and pressure to reshape and transform the original horizontal strata
• Mineral vein - concentrations of crystallised mineral occur within a rock
• Alteration area - zones of change to pre-existing rocks via heat and pressure
• Landform - a surface form feature e.g. drumlins.

Geometry: Line

Coverage: England, Scotland and Wales

Schema: