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G-BASE (Geochemical Baseline Survey of the Environment) for south west England - stream sediments and shallow (5-20cm) soils

[This metadata record has been superseded, see http://data.bgs.ac.uk/id/dataHolding/13480412].The G-BASE programme involves systematic sampling and the determination of chemical elements in samples of stream sediment, stream water and soil, to build up a picture of the surface chemistry of the UK. G-BASE for SW England is the most recent area of the UK sampled by this on-going project The average sample density for stream sediments is approximately one site per 2km square. Density for soils in SW England is variable across the area, ranging from 1 per 2km square to one per 5km square, depending on underlying parent material. Analytical precision is high with strict quality control to ensure countrywide consistency. Results have been standardised to ensure continuity with existing G-BASE geochemical data. The data provide baseline information on the natural abundances of elements, against which anomalous values due to such factors as mineralisation and industrial contamination may be compared. Analytical data for the sub150 microns fraction of stream sediment and the sub 2mm fraction of soil samples are available for some or all of: Ag, Al, As, Ba, Bi, Br, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hf, I, In, K, La, Mg, Mn, Mo, Na, Nb, Nd, Ni, P, Pb, Rb, S, Sb, Sc, Se, Si, Sm, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Yb, Zn, and Zr.

Simple

Alternate title
G-BASE for SW England
Date (Creation)
1968
Identifier
http://data.bgs.ac.uk/id/dataHolding/13606288
Distributor
  British Geological Survey - Enquiries
Environmental Science Centre, Nicker Hill, Keyworth , NOTTINGHAM , NOTTINGHAMSHIRE , NG12 5GG , United Kingdom
0115 936 3143
0115 936 3276
Originator
  British Geological Survey - Enquiries
Environmental Science Centre, Nicker Hill, Keyworth , NOTTINGHAM , NOTTINGHAMSHIRE , NG12 5GG , United Kingdom
0115 936 3143
0115 936 3276
Point of contact
  British Geological Survey - Enquiries
Environmental Science Centre, Nicker Hill, Keyworth , NOTTINGHAM , NOTTINGHAMSHIRE , NG12 5GG , United Kingdom
0115 936 3143
0115 936 3276
Custodian
  British Geological Survey - Enquiries
Environmental Science Centre, Nicker Hill, Keyworth , NOTTINGHAM , NOTTINGHAMSHIRE , NG12 5GG , United Kingdom
0115 936 3143
0115 936 3276
Maintenance and update frequency
annually Annually
GEMET - INSPIRE themes, version 1.0
  • Geology
BGS Thesaurus of Geosciences
  • UK Location (INSPIRE)
  • Soil chemistry
  • Geology
  • Geochemistry
  • Stream sampling
dataCentre
  • UK Location (INSPIRE)
Keywords
  • NERC_DDC
Access constraints
otherRestrictions Other restrictions
Other constraints
no limitations
Other constraints
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.
Use constraints
otherRestrictions Other restrictions
Other constraints
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.
Other constraints
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.
Spatial representation type
grid Grid
Denominator
50000
Metadata language
EnglishEnglish
Topic category
  • Geoscientific information
Geographic identifier
Cornwall [id=43750]

Date (Revision)
2009

Geographic identifier
DEVON [id=164700]

Date (Creation)
1979

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Begin date
2012 After
Supplemental Information
Stream sediment samples were collected during June - September 2012, soils between June 2012 -March 2013. Geochemical sampling was carried out according to International Geochemical Sampling methods described by IGCP 259.
Unique resource identifier
OSGB 1936 / British National Grid (EPSG::27700)
Distribution format
  • Web delivery of colour enhanced geochemical images. ()

  • Via TELLUS SW Project Portal ( 1.0 )

  • Digital data - Excel Workbook/Access Database ( 1.0 )

Distributor
  British Geological Survey - Enquiries
Environmental Science Centre, Nicker Hill, Keyworth , NOTTINGHAM , NOTTINGHAMSHIRE , NG12 5GG , United Kingdom
0115 936 3143
0115 936 3276
OnLine resource
Geochemical baseline survey of the environment (G-BASE) ( WWW:LINK-1.0-http--link )

The BGS Geochemical Baseline Survey of the Environment (G-BASE) is the national strategic geochemical mapping programme in Great Britain. The project set out to establish the chemistry of the surface environment by the collection and analysis of stream sediment, stream water and soil samples.

OnLine resource
Tellus SW project web portal ( WWW:LINK-1.0-http--link )

Tellus South West project is a collaborative, environmental survey and research project funded by the Natural Environment Research Council (NERC) and carried out by a partnership of the British Geological Survey (BGS), the Centre for Ecology and Hydrology (CEH), the British Antarctic Survey (BAS) and the University of Exeter Camborne School of Mines. The multidisciplinary data collected will be managed by the NERC data centres at BGS and CEH. The following data for the south-west region will be delivered by the project. airborne magnetic and airborne radiometric survey (available now) soil and stream sediment geochemistry (G-BASE) (coming soon) airborne LiDAR survey: DTM and DSM (available now) habitat surveys (coming soon) multispectral and thermal imaging, Tamar Valley (available 2015).

Hierarchy level
dataset Dataset
Other
dataset

Conformance result

Date (Publication)
2011
Explanation
See the referenced specification
Pass
No

Conformance result

Date (Publication)
2010-12-08
Explanation
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
Pass
No
Statement
Data generated from the analyses of stream sediment and soil samples, by XRFS (X-ray fluorescence spectrometry), collected during 2012 and 2013. Data quality control and conditioning procedures carried out in accordance with adopted and documented G-BASE protocol. 'G-BASE data conditioning procedures for stream sediment and soil chemical analyses' BGS Internal Report IR/05/150. Following the data QC process, all analytical data are loaded to the corporate Geochemistry Database. Digital geochemical images were generated in ArcGIS 10.1 using an Inverse Distance Weighting (IDW) interpolation algorithm with a cell size of 500m and a variable search radius with a maximum proximity distance of up to 10000m. Detailed Information on sampling and analytical methods are provided in the following published geochemical atlas: Regional geochemistry of Wales and west-central England: stream sediment and soil. Keyworth, Nottingham. British Geological Survey (2000). ISBN 0 85272 378 4.
File identifier
0214897c-7597-41ad-e054-002128a47908 XML
Metadata language
EnglishEnglish
Hierarchy level
dataset Dataset
Date stamp
2025-11-13
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  British Geological Survey
Environmental Science Centre,Keyworth , NOTTINGHAM , NOTTINGHAMSHIRE , NG12 5GG , United Kingdom
+44 115 936 3100
Dataset URI
http://data.bgs.ac.uk/id/dataHolding/13606288
 
 

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