iHydrogeology shale and aquifer surfaces (vertical separation maps and data)
These maps provide an overview, at the national scale, of the spatial relationships between principal aquifers and some of the major shale and clay units in England and Wales. The data comprises a series of occurrence maps shows the distribution of rock units that form the principal aquifers and some major shale and clay units in England and Wales. In addition, a series of separation maps show the vertical separation between pairs of shales or clays and overlying aquifers. If shale gas resources are to be developed in the UK, the implications for groundwater will need to be considered as part of any risk assessment. A step in such an assessment will be to understand and quantify the spatial relationships between the potential shale gas source rocks (including both shales and some clay units) and overlying aquifers. The datasets used to produce the aquifer maps, the shale and clay occurrence maps and the separation maps are available to download for your own use. As with other BGS data sets available for download, this will enable you to work offline to develop your own systems and methodologies using BGS data. The data used to produce the aquifer, shale and clay maps are available below as ESRI GIS and KML files.
dataset
http://www.bgs.ac.uk/research/groundwater/shaleGas/aquifersAndShales/home.html
name: Aquifers and shales Homepage
description: This page provides background information, maps and data about aquifers and shales.
function: information
http://data.bgs.ac.uk/id/dataHolding/13606280
eng
These surfaces have been developed by the British Geological Survey as part of the iHydrogeology project (a co-funded project between BGS and the Environment Agency). It was developed, in partial fulfilment of work package 3 of the iHydrogeology project, with the aim of providing a tool to visualise regional-scale spatial and depth relationships between Principal Aquifers in England and Wales and potential shale gas source rocks.
geoscientificInformation
publication
2008-06-01
Shale
Shale oil
Hydrogeology
Aquifers
revision
2011
NERC_DDC
-6.4500
1.7800
55.8300
49.7700
revision
2009
EAW
creation
1979
ENGLAND & WALES [id=149000]
2014-07
creation
2014-07
asNeeded
The original surfaces were derived from the National Geological Fence Model. Data from crossections was extracted and interpolated in order to create the surfaces. The top surfaces of the shale gas source rocks were produced from the GB 3D fence diagram (v2012) using GSI3D and GOCAD software. The top of the shale gas units were identified from the cross-sections and grouped based on information provided by Geologists, e.g Upper Jurassic Clays. The cross-section correlation lines from the sections were exported as pline files from GSI3D and imported into GOCAD. Using a combination of the DigMap 1:625 000 Bedrock Map (V5) to constrain the units at outcrop and the correlation points from the GB 3D cross-sections, surfaces were generated using the Discrete Smoothing Interpolation in GOCAD. The subcrop was constrained by the spatial extent of these units identified in cross-section. Surfaces were exported and converted to ESRI grids at 3000 m cell size.
publication
2011
false
See the referenced specification
publication
2010-12-08
false
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
ESRI GIS files
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.
British Geological Survey
Environmental Science Centre, Nicker Hill, Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
0115 936 3143
0115 936 3276
distributor
British Geological Survey
Environmental Science Centre, Nicker Hill, Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
0115 936 3143
0115 936 3276
pointOfContact
British Geological Survey
Maclean Building, Crowmarsh Gifford
WALLINGFORD
OX10 8BB
United Kingdom
01491 838800
01491 692345
distributor
British Geological Survey
Maclean Building, Crowmarsh Gifford
WALLINGFORD
OX10 8BB
United Kingdom
01491 838800
01491 692345
pointOfContact
British Geological Survey
Environmental Science Centre, Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
+44 115 936 3100
pointOfContact
2022-05-18