Engineering Properties:Discontinuities
DiGMapPlus_Discontinuities_V6
This dataset is a characterisation of discontinuity types found within rocks and soils in Great Britain. Discontinuities are breaks, fractures or planes of weakness in the rock mass. The dataset includes type, frequency and orientation of discontinuities within rock and soil materials at formation (local to regional) scale. The discontinuities are classified in 3 categories: stratification (bedding planes), foliation (mineral banding) and rock mass description. The dataset aims to facilitate the preliminary research for planning and design of buildings, infrastructure and resource extraction. It forms part of the DiGMap Plus dataset series of GIS layers which describes the engineering properties of materials from the base of pedological soil down to c. 3m depth (ie the uppermost c.2m of geology). These deposits display a variable degree of weathering, but still exhibit core engineering characteristics relating to their lithologies.
dataset
protocol: HTTP
name: BGS Homepage
description: The BGS Homepage is an entry point to the BGS data services.
function: information
http://data.bgs.ac.uk/id/dataHolding/13606850
eng
geoscientificInformation
publication
2008-06-01
Engineering
Geology
Engineering geology
Geological structures
Discontinuity
revision
2011
NERC_DDC
-8.3400
2.7000
60.8700
49.8500
revision
2009
ENG
creation
1979
ENGLAND [id=150000]
creation
1979
SCOTLAND [id=140000]
revision
2009
SCT
creation
1979
WALES [id=170000]
revision
2009
WLS
2015-10-12
creation
2015-06-03
asNeeded
The source data for this dataset is based on the digital geological map of GB (DiGMapGB-50) which has been processed to create the Parent Material Map (PMM) V6 at 50K scale. This provided the underlying geology areas (polygons). The geology has been reattributed using a set of engineering properties. Data was collated and interpreted from a number of different sources held by BGS including BGS National Geotechnical Properties Database BGS Lexicon of Named Rock Units BGS Map Sheet Explanations BGS Sheet Memoirs BGS Geoscience Imagebase BGS and Geological Society Regional Guides BGS Urban Planning Reports BGS Engineering Geology Formation Study Reports Site Investigation Records and Borehole Scans held in BGS archives These data were used to devise engineering property values by BGS experts and applied to the PMM data using a series of lookup tables to describe the uppermost 2m in relation to its discontinuity properties. The DiGMapPlus datasets follow a standard workflow to create each dataset: - Step 1: Identify characteristic, measurements and observations from archive records. - Step 2: Categorise the observations into classes/groups of similar behaviours. Where possible using published standards of classification such as BS 5930, Eurocode 7 or other similar international or national standard. - Step 3: Assess the range of lithstratigraphic variation of geological materials across Great Britain, in terms of the categories and classes identified in step 2 to create a 'lookup' dataset of expected attributes (material characteristics and behaviours) per lithostratigraphic unit. - Step 4: Compile the spatial (map) components of the DiGMapPlus datasets with the 'lookup' dataset using standard GIS and data techniques to create a new 'map' of discontinuity characteristics. Spatial data-creation and discontinuity attribution has been completed using ESRI ARCGIS software.
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
Shapefile
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
2023-05-24