dataset · Northern Ireland

1:250K Geological Maps of Northern Ireland version 2

The 1:250k Geological Maps of Northern Ireland comprise the Superficial Deposits Map (Drift, 1991) and the Bedrock Map (Solid Geology, 1997). These maps identify landscape areas based on their lithology. The scale of the maps is 1:250 000 and provides a simplified interpretation of the geology that may be used as a guide at a regional level, but should not be relied on for local geology. Superficial deposits are younger geological deposits formed during the most recent geological time; the Quate

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: Superficial deposits polygons (Drift, 1991) · Bedrock polygons (Solid Geology, 1997) · Linear features (dykes and geological faults) · Attribute tables describing polygon features
Coverage docs-verified: Northern Ireland (six Counties); bedrock coverage extends west into the Republic of Ireland
Resolution docs-verified: 1:250 000 map scale; simplified regional-level interpretation
Update frequency docs-verified: As needed
Formats docs-verified: HTML
Access docs-verified: No authentication listed in entry; reuse restricted by NERC/BGS copyright, so prior permission is needed to reproduce or transmit (not a standard OGL grant for these derived materials)

Useful for

Use cases llm-inferred: Regional geology context for Northern Ireland desk studies and site-setting · Superficial deposit (drift) lithology screening for drainage and infiltration feasibility at regional scale · Bedrock, dyke and fault context for groundwater or flood-risk desk studies at regional scale
Audience llm-inferred: engineering geologists · geotechnical engineers · hydrogeologists · drainage engineers · planners · GIS analysts

Limitations

Constraints docs-verified: Simplified regional-level interpretation; should not be relied on for local geology · Generalised data, superseded by the 1:10k Geological Maps of Northern Ireland · Source maps date from 1991 (superficial) and 1997 (bedrock) · No warranty as to quality or accuracy; NERC/BGS accepts no liability · Digital dataset file format is not stated in the docs (only HTML link formats are listed)

Evidence

Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.