dataset · United Kingdom
BGS Offshore Bedrock 250k version 3.0
The BGS Offshore Bedrock 250k dataset contains vector data which reflects the offshore bedrock geological of the UK and some of its adjacent waters (the UK Exclusive Economic Zone, EEZ) at 1:250,000 scale. This comprehensive product provides a digital compilation of the paper maps published by BGS at the same scale, as well as, additional re-interpretations from regional geological studies. The composition, age and deformational history of the rocks underlying the seabed (bedrock) are important
Visit source ↗Source details
Licence: ["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 an
Evidence quality: 37.1
Listed in data.gov.uk public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered docs-verified
- Bedrock Lithostratigraphy polygons (principal formations and groups) · Bedrock Structural Geology lines (faults and folds)
- Coverage docs-verified
- UK offshore bedrock and adjacent waters (UK Exclusive Economic Zone)
- Resolution docs-verified
- 1:250,000 scale
- Update frequency docs-verified
- as needed (no fixed schedule)
- Formats docs-verified
- vector (GIS layers)
- Access docs-verified
- No authentication listed (auth: null). Licence restricts reproduction and transmission without prior permission of the copyright holder (NERC/BGS).
Useful for
- Use cases llm-inferred
- Offshore cable or wind-farm corridor desk study: regional bedrock geology along the route · Marine spatial planning screening of seabed bedrock lithology and structural features · Regional geohazard context for offshore developer scoping (not site-specific)
- Audience llm-inferred
- marine spatial planners · offshore developers · marine and offshore geologists · GIS analysts · civils and geotechnical engineers (desk-study screening)
Limitations
- Constraints docs-verified
- Not for local or site-specific geology · Mapping detail varies with data density (geophysical survey and well/borehole control) · Access constraints restrict reproduction; the page footer cites OGL v3.0 but the dataset-specific constraints apply · Updated as needed, with no fixed schedule
Evidence
- https://www.bgs.ac.uk/datasets/offshore-bedrock-250k/
- https://www.data.gov.uk/dataset/c5a1c1d4-bdbd-42b6-9989-3596d77f3c16/bgs-offshore-bedrock-250k-version-3-0
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.