User guide : BGS Seabed Sediments 250k Dataset

User guide : BGS Seabed Sediments 250k Dataset

British Geological Survey. 2021 User guide : BGS Seabed Sediments 250k Dataset. Nottingham, UK, British Geological Survey, 25pp. (OR/21/010) (Unpublished)

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Abstract/Summary

The BGS Seabed Sediments 250k dataset is a digital geological map portraying the distribution of seabed substrate types of the UK Continental Shelf at a scale of 1:250 000. This comprehensive product provides a digital compilation of the original paper maps published by BGS at the same scale with additional re-interpretation from regional geological studies. The seabed is typically covered by sediments that form a veneer or thicker superficial layer of unconsolidated material over the bedrock. These sediments are classified by their grain size, partly reflecting the environment in which were deposited. This information is important to a range of stakeholders, including marine habitat mappers, marine spatial planners and offshore industries (in particular, the dredging and aggregate industries). This dataset covers most of the UK Exclusive Economic Zone (EEZ) and some of its adjacent waters. It was primarily based on seabed grab samples of the top 0.1 m, combined with cores, dredge samples and side-scan sonar data acquired during mapping surveys since the early 1970s. The variations in data density will be reflected in the detail of the mapping. This dataset can be used in conjunction with the other small-scale BGS offshore geological datasets: • BGS Offshore Bedrock 250k dataset • BGS Seabed Hard Substrate dataset This user guide provides the information required to enable the reader to understand and use this BGS data product.

Item Type:

Publication - Report

Funders/Sponsors:

British Geological Survey

Additional Information:

This item has been internally reviewed, but not externally peer-reviewed.

Date made live:

20 Aug 2025 09:43 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/540093