3D geological model report for Liverpool, Warrington and Irlam superficial and bedrock model

Burke, H.; Terrington, R.; Thorpe, S.; Cullen-Gow, H.; Kearsey, T.. 2023 3D geological model report for Liverpool, Warrington and Irlam superficial and bedrock model. Nottingham, UK, British Geological Survey, 34pp. (OR/23/020) (Unpublished)

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Abstract/Summary

This report describes the data and methodology used to construct the 3D geological model of the artificially modified ground, superficial deposits and bedrock of Liverpool, Warrington and Irlam, NW England (Figure 1). These areas form part of the Lower Mersey Corridor linking Liverpool to Manchester. Historically this been an important transport connection in this region between these cities along the Manchester Ship Canal and more recently by rail and road. The 3D geological model was developed for the purpose of characterising lithological variability within superficial deposits and depth to rockhead. It is intended to be used for the assessment of engineering geological and geological ground conditions and their influence on aquifer vulnerability and recharge potential. The 3D geological model is not intended as a replacement for invasive ground investigation. It provides an additional tool for the development of a conceptual ground model in Liverpool, Warrington and Irlam. The model was constructed to be compatible with, and equivalent to, a detailed 1:10 000 scale geological map. The model therefore includes geological units that would normally be resolved at 1:10 000 scale. The total area of the BGS Liverpool, Warrington and Irlam 3D geological model is approximately 585 km2 and ranges in elevation from 400 mOD to -300 mOD and is suitable for use at scales of 1:10 000 to 1:50 000. The geological model includes the top, base and thickness for each natural and artificial superficial deposit within the area. The BGS Liverpool, Warrington and Irlam 3D geological model report has been separated into the following sections: • Bedrock and superficial geology (Sections 2, 3 and 4): provides the geological context of the Liverpool, Warrington and Irlam geological model areas • Model datasets (Section 5): a description of the data used to inform the BGS Liverpool, Warrington and Irlam 3D geological model and the processes used on these datasets. • Modelled surfaces and volumes (Section 6): a description of the surface horizons modelled for the BGS Liverpool, Warrington and Irlam 3D geological model. • Superficial and bedrock geology modelling workflows (Section 7): the methodology used to model the superficial and bedrock geology in 3D • 3D geological model quality assurance (QA), rules and assumptions and limitations (Sections 8, 9 and 10): a description of the 3D geological model QA procedures; the geological rules and assumptions that were applied to the 3D geological model, and the limitations around the use of the 3D geological model • Uncertainty (Section 11): a qualitative assessment of the uncertainty is described. • BGS Liverpool, Warrington and Irlam 3D geological model images (Section 12): 3D and cross-section images of the 3D geological outputs are provided for the horizons modelled.

Item Type:	Publication - Report
Funders/Sponsors:	British Geological Survey
Additional Information. Not used in RCUK Gateway to Research.:	This item has been internally reviewed, but not externally peer-reviewed.
Date made live:	23 Oct 2023 09:48 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/536150

Item Type:

Publication - Report

Funders/Sponsors:

British Geological Survey

Additional Information. Not used in RCUK Gateway to Research.:

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

Date made live:

23 Oct 2023 09:48 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/536150