2f98f2ff-2ee0-37b7-e063-0937940a4ed0 English dataset British Geological Survey +44 131 667 1000 The Lyell Centre, Research Avenue South EDINBURGH LOTHIAN EH14 4AP United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-03-10 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13608361 OSGB 1936 / British National Grid (EPSG::27700) Legacy BGS geothermal models: theoretical potential 'heat-in-place' for the early Carboniferous limestone (hot sedimentary aquifer resources) in northern and southern England 2023 publication http://data.bgs.ac.uk/id/dataHolding/13608361 This raster dataset shows the modelled P50 distribution of the theoretical potential 'heat-in-place' (HIP) across the northern and southern early Carboniferous limestone in Great Britain (PJ / km2), at a resolution of 2500 m x 2500 m. The HIP is calculated for resource temperatures greater than 50 degrees Celsius, which represents the minimum temperature required for direct use of heat from hot sedimentary aquifer resources. The HIP characterises the heat resource available in an aquifer according to the USGS definition described in e.g. Muffler and Cataldi (1978). Its calculation is part of the research published by D J.R. Jones, T. Randles, T. Kearsey, T.C. Pharaoh, A. Newell (2023). https://doi.org/10.1016/j.geothermics.2023.102649. Areas of high uncertainty are delineated in the published paper. Enquiries British Geological Survey 0115 936 3142 0115 936 3276 The Lyell Centre, Research Avenue South EDINBURGH LOTHIAN EH14 4AP United Kingdom enquiries@bgs.ac.uk distributor Enquiries British Geological Survey 0115 936 3142 0115 936 3276 The Lyell Centre, Research Avenue South EDINBURGH LOTHIAN EH14 4AP United Kingdom enquiries@bgs.ac.uk pointOfContact notPlanned https://resources.bgs.ac.uk/images/geonetworkThumbs/2f98f2ff-2ee0-37b7-e063-0937940a4ed0.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Aquifers Geothermal maps Geothermal energy Limestone Carboniferous BGS Thesaurus of Geosciences 2022 revision UK Location (INSPIRE) dataCentre NERC_DDC otherRestrictions no limitations The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible. otherRestrictions 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 any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage. grid 2500 English geoscientificInformation British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation NORTHERN ENGLAND [id=151000] British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation SOUTHERN ENGLAND [id=158800] -3.0764 1.1171 50.7670 54.0358 2022 2025 Enquiries British Geological Survey 0115 936 3142 0115 936 3276 The Lyell Centre, Research Avenue South EDINBURGH LOTHIAN EH14 4AP United Kingdom enquiries@bgs.ac.uk distributor https://ukgtp.bgs.ac.uk WWW:LINK-1.0-http--link UK Geothermal Platform Web Map An interactive Web map for exploring geothermal energy potential, assessing constraints, and making informed exploration decisions. information https://ukgeothermalplatform.org WWW:LINK-1.0-http--link UK Geothermal Platform An online platform for exploring geothermal energy potential, assessing constraints, and making informed exploration decisions. information dataset dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false The study was conducted to assess the theoretical potential of the geothermal resource from the early Carboniferous limestone (ECL) in Great Britain. The theoretical potential 'heat-in-place' was calculated using the 3DHIP tool (Piris et al., 2021), which is based on the USGS volumetric 'heat-in-place' method developed by Muffler and Cataldi (1978). The method uses a Monte Carlo simulation to calculate the P50 probability distribution function for the HIP using the P50 distribution of reservoir volume and rock density derived from the 3D geological models of the ECL lithofacies for each study area, gridded at an XYZ spatial resolution of 2500 x 2500 x 50 m, and the temperature distribution. The model assumes a triangular porosity distribution, a constant fluid density (1040 kg / m3), fluid specific heat capacity (3.8 kJ/kg°C), and rock specific heat capacity (0.86 kJ/kg°C) and a reference/reinjection temperature of 21 °C. Geothermal gradient and mean surface temperature were defined as constants for each model. An upper depth cut-off of 1000 m and 1200 m was applied to northern and southern models respectively, which corresponds to a reservoir temperature of 50 °C and is judged to be the minimum temperature required for direct-use applications of geothermal energy. The heat-in-place is highly sensitive to the thickness, which is influenced by the depth to the top (well constrained by seismic interpretation and well picks) and base (less/no well coverage and poor constrained in some areas) of the base Carboniferous.