Tadcaster Magnesian Limestone3d Borehole and Cross-Sections Study
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Tadcaster Magnesian Limestone 3-D Borehole Interpretation and Cross-sections Study Geology and Landscape (South) Report CR/06/256 N BRITISH GEOLOGICAL SURVEY GEOLOGY AND LANDSCAPE (SOUTH) PROGRAMME IN CONFIDENCE REPORT CR/06/256N Tadcaster Magnesian Limestone 3-D Borehole Interpretation and Cross-sections Study The National Grid and other Ordnance Survey data are used with the permission of the Controller of Her Majesty’s A H Cooper and R S Lawley Stationery Office. Ordnance Survey licence number Licence No:100017897/2007. & Licence No:100026380/2007 Study undertaken for the Environment Agency Keywords Report;Permian, Quaternary, 3D cross-sections, Tadcaster, Yorkshire, hydrogeology. Front cover 3-D model of the Permian strata and Quaternary deposits of the Tadcaster area. Bibliographical reference A H COOPER, R S LAWLEY. 2007. Tadcaster Magnesian Limestone 3-D Borehole Interpretation and Cross-sections Study. British Geological Survey In Confidence Report, CR/06/256. 59pp. Copyright in materials derived from the British Geological Survey’s work is owned by the Natural Environment Research Council (NERC) and/or the authority that commissioned the work. You may not copy or adapt this publication without first obtaining permission. Contact the BGS Intellectual Property Rights Section, British Geological Survey, Keyworth, e-mail [email protected] You may quote extracts of a reasonable length without prior permission, provided a full acknowledgement is given of the source of the extract. © NERC 2007. All rights reserved Keyworth, Nottingham British Geological Survey 2007 BRITISH GEOLOGICAL SURVEY The full range of Survey publications is available from the BGS British Geological Survey offices Sales Desks at Nottingham, Edinburgh and London; see contact details below or shop online at www.geologyshop.com Keyworth, Nottingham NG12 5GG The London Information Office also maintains a reference 0115-936 3241 Fax 0115-936 3488 collection of BGS publications including maps for consultation. e-mail: [email protected] The Survey publishes an annual catalogue of its maps and other www.bgs.ac.uk publications; this catalogue is available from any of the BGS Sales Shop online at: www.geologyshop.com Desks. The British Geological Survey carries out the geological survey of Murchison House, West Mains Road, Edinburgh EH9 3LA Great Britain and Northern Ireland (the latter as an agency 0131-667 1000 Fax 0131-668 2683 service for the government of Northern Ireland), and of the e-mail: [email protected] surrounding continental shelf, as well as its basic research projects. It also undertakes programmes of British technical aid in geology in developing countries as arranged by the Department London Information Office at the Natural History Museum for International Development and other agencies. (Earth Galleries), Exhibition Road, South Kensington, London SW7 2DE The British Geological Survey is a component body of the Natural Environment Research Council. 020-7589 4090 Fax 020-7584 8270 020-7942 5344/45 email: [email protected] Forde House, Park Five Business Centre, Harrier Way, Sowton, Exeter, Devon EX2 7HU 01392-445271 Fax 01392-445371 Geological Survey of Northern Ireland, Colby House, Stranmillis Court, Belfast, BT9 5BF 028-9038 8462 Fax 028-9038 8461 Maclean Building, Crowmarsh Gifford, Wallingford, Oxfordshire OX10 8BB 01491-838800 Fax 01491-692345 Sophia House, 28 Cathedral Road, Cardiff, CF11 9LJ 029–2066 0147 Fax 029–2066 0159 Parent Body Natural Environment Research Council, Polaris House, North Star Avenue, Swindon, Wiltshire SN2 1EU 01793-411500 Fax 01793-411501 www.nerc.ac.uk Foreword This report is the published product of a study by the British Geological Survey (BGS) for the Environment Agency (EA). Acknowledgements Dr Andrea Lancaster of the Environment Agency is thanked for her help with establishing and reviewing the project. Many BGS staff were involved in the lithological coding of boreholes; their work is gratefully acknowledged. Steve Thorpe is thanked for help with extracting borehole data parameters and reviewing the document. Special acknowledgement goes to Simon Price, Holger Kessler and Jon Ford for help and support in the use of GSI3-D. Use of Ordnance Survey Copyright data Maps in this report use Ordnance Survey material with the permission of the Ordnance Survey on behalf of the Controller of Her Majesty’s Stationery Office © Crown copyright. Unauthorised reproduction infringes Crown copyright and may lead to prosecution or civil proceedings. Environment Agency 100026380/ 2007; British Geological Survey 100017897/2007. Exclusion of Warranty This report is compiled in good faith by BGS from information obtained from its own researches and/or received from a number of different sources. The BGS and the Natural Environment Research Council give no warranties expressed or implied in relation to, and disclaim all responsibility for, the quality and/or accuracy of the information contained in this report, howsoever that information may have been obtained or received, or as to its suitability for any use. BGS and the Natural Environment Research Council accepts no liability whatsoever in respect of loss, damage, injury or death arising out of or in any way related to information contained in this report. The cross-sections and thematic maps are compiled from borehole information that varies considerably in distribution, age, quality, depth and content. The geological information has been compiled from these boreholes and digital map data at a scale of 1: 50,000. Use of the cross- section interpretations at scales larger than 1:50,000 is not recommended. The varied distribution of the borehole data means that in some places the sections are well constrained and in others the geological lines are considerably extrapolated. The cross-sections are the best interpretation that the geologist has been able to make from the existing information and new boreholes may require this interpretation to be modified. 1 Contents Foreword........................................................................................................................................ 1 Acknowledgements........................................................................................................................ 1 Use of Ordnance Survey Copyright data .................................................................................... 1 Exclusion of Warranty.................................................................................................................. 1 Contents.......................................................................................................................................... 2 Summary........................................................................................................................................ 6 1 Introduction and Scope of Study .......................................................................................... 7 2 Borehole Coding..................................................................................................................... 7 2.1 Coding methodology ...................................................................................................... 7 2.2 Borehole elevation.......................................................................................................... 9 3 Cross-Section Construction and Correlation ...................................................................... 9 3.1 Cross-section construction Methodology ..................................................................... 10 3.2 Correlation.................................................................................................................... 10 4 Aquifer and aquitard thickness modelling ........................................................................ 12 4.1 Overview ...................................................................................................................... 12 4.2 Gridding details ............................................................................................................ 12 5 Bedrock Geology .................................................................................................................. 14 5.1 Carboniferous strata...................................................................................................... 16 5.2 Permian strata ............................................................................................................... 16 5.3 Yellow Sands Formation .............................................................................................. 17 5.4 Marl Slate Formation.................................................................................................... 17 5.5 Zechstein Group ........................................................................................................... 17 5.6 Cadeby Formation ........................................................................................................ 17 5.7 Hayton Anhydrite (or gypsum) Formation................................................................... 18 5.8 Edlington Formation..................................................................................................... 18 5.9 Brotherton Formation ................................................................................................... 18 5.10 Billingham Anhydrite (or gypsum) Formation............................................................. 19 5.11 Roxby Formation.........................................................................................................