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3-D hydrogeological characterisation of the superficial deposits between Doncaster and Retford

Price, S.J.; Banks, V.; Cooper, A.H.; Wildman, G.; Kessler, H.; Burke, H.; Terrington, R.; Bridge, D.; Shepley, M.. 2006 3-D hydrogeological characterisation of the superficial deposits between Doncaster and Retford. Nottingham, UK, British Geological Survey, 43pp. (CR/06/027N) (Unpublished)

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Abstract/Summary

A 3-D geological model of the area between Doncaster and Retford was created in order to characterise the thickness and distribution of superficial deposits to allow hydrogeological domains to be derived above the Sherwood Sandstone aquifer. The overarching aim of the study was to use a domains approach, derived from the output of the 3-D model to assess potential recharge to the Sherwood Sandstone aquifer. The results of the study are intended to help the Environment Agency meet its regulatory requirements under the Water Framework Directive and Catchment Abstraction Management Strategy (CAMS) and form part of its overall East Midlands – Yorkshire Sherwood Sandstone Groundwater Study. The 3-D model revealed a complex sequence of pre-glacial, glacial and post-glacial sediments deposited on a rockhead surface that extends in paces to –26mOD as a result of deep incision into the bedrock. These channels are orientated north-west, south-east or east-west. The sequence of superficial deposits is generally less than 10m thick, increasing to 25m in places to the east and southeast of the project area. The area from Hatfield Moors in the north-east to Misson in the south-east is characterised by a sequence of peat, variably underlain by Blown Sand, Glaciolacustrine silt and clay and “Older River Gravel”. The Glaciolacustrine silt and clay is most thickly developed beneath Hatfield Moors, but is laterally discontinuous. Elsewhere, to the west of the study area, the superficial deposits comprise sand, gravel and till of limited extent and are generally less than 10m thick, except in some fluvial valleys. Seven hydrogeological domains were identified from the 3-D model and other published data sources. The domains were defined in terms of the potential for recharge to occur either directly into the Sherwood Sandstone or through the sequence of superficial deposits. Each of the units making up the superficial deposits in the area was classified according to its inferred hydrogeological properties. A hydrogeological domains map produced via a series of GIS rules and queries using the digital output from the model reveal that the potential for recharge is greatest in the western and central parts of the project area, with only limited potential recharge occurring to the east.

Item Type: Publication - Report (UNSPECIFIED)
Programmes: BGS Programmes > Groundwater Management
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. Report made open with permission of Environment Agency January 2015
Date made live: 22 Jan 2015 15:32 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/509495

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