GeoSure ground stability data product version 8
BGS GeoSure identifies, at 1:50 000 scale, areas of susceptibility and considers the following specific hazard processes that can occur in Great Britain: 1. Shrink–Swell: Swelling clays change in volume due to changes in water content; this can lead to movements (up or down) in the upper two metres of the ground, which may affect property foundations. 2. Landslides (Slope Instability): Slope instability occurs when particular slope characteristics combine to make the slope unstable. Downslope movement of materials (landslide) may cause damage to foundations, services or impact damage to buildings. 3. Soluble Rocks (Dissolution): Ground dissolution occurs when certain types of rocks, containing layers of soluble material, get wet and the soluble material dissolves. This can cause underground cavities to develop. These cavities reduce support to the ground above and can lead to a collapse of overlying rocks. 4. Compressible Ground: Some types of ground may contain layers of very weak materials such as peat or some types of poorly structured clays. These may compress if loaded by overlying structures, or if the groundwater level changes. This compression may result in depression of the ground surface, potentially disturbing foundations and services. 5. Collapsible Deposits: Some soils may collapse when a load (building or road traffic) is placed on them, especially if they become saturated. Such collapse may cause damage to overlying property or services. 6. Running Sand: Some rocks and soils can contain loosely packed sandy layers that can become fluidised by water flowing through them. Such sands can ‘run’ (flow), potentially removing support from overlying buildings and causing damage.
dataset
https://www.bgs.ac.uk/datasets/geosure/
function: information
https://doi.org/10.5285/4325c0ac-21bf-4703-971a-2cc0e9fdad8e
name: Digital Object Identifier (DOI)
function: information
http://data.bgs.ac.uk/id/dataHolding/13607692
eng
geoscientificInformation
publication
2008-06-01
Landslides
Shrink-swell clays
Collapsible deposits
Soluble rocks
Geohazards
Natural hazards
Running sands
Compressible ground
revision
2011
NERC_DDC
-7.8900
1.8400
60.8600
49.8600
revision
2009
GBN
creation
1979
GREAT BRITAIN [id=139600]
1835
2018
creation
2018
asNeeded
This dataset is derived from the BGS Geology v8 (DiGMapGB-50_V8), each new version of BGS Geology 50k prompts a new version of GeoSure. Version 8 (released 2018): New 1:50 000 geological mapping in 18 areas as well as data refinement associated with coastal areas and miscellaneous corrections to features across the country. Partially revised methodology for the Slope Stability (Landslides) layer incorporating new information on Quaternary Till deposits. Updated expert polygons extent in Dissolution layer to reflect new geological mapping. Methodology devised by the Natural Geohazards Project. Latest version, and earlier versions, are held in project files User Guide for the British Geological Survey GeoSure dataset: Version 8 available online https://www.bgs.ac.uk/datasets/geosure/ (Open Report: OR/17/050).
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 Shapefiles
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
Environmental Science Centre,Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
+44 115 936 3100
pointOfContact
2024-03-14