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

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
Citation identifier
http://data.bgs.ac.uk/id/dataHolding/13606288
Point of contact
Organisation name Individual name Electronic mail address Role

British Geological Survey

Enquiries

enquiries@bgs.ac.uk

Distributor

British Geological Survey

Enquiries

enquiries@bgs.ac.uk

Originator

British Geological Survey

Enquiries

enquiries@bgs.ac.uk

Point of contact

British Geological Survey

Enquiries

enquiries@bgs.ac.uk

Custodian
Maintenance and update frequency
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
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
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
Denominator
50000
Language
English
Topic category
  • Geoscientific information
Geographic identifier
Cornwall [id=43750]

British Geological Survey Gazetteer: OS Boundary Line 2009 revision

Geographic identifier
DEVON [id=164700]

British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation

N
S
E
W
thumbnail




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
Name Version

Web delivery of colour enhanced geochemical images.

Via TELLUS SW Project Portal

1.0

Digital data - Excel Workbook/Access Database

1.0

Distributor contact
Organisation name Individual name Electronic mail address Role

British Geological Survey

Enquiries

enquiries@bgs.ac.uk

Distributor
OnLine resource
Protocol Linkage Name
http://www.bgs.ac.uk/gbase/home.html

G-BASE Homepage

OnLine resource
Protocol Linkage Name
http://www.tellusgb.ac.uk/data/home.html

Tellus SW project web portal

Hierarchy level
Dataset
Other

dataset

Conformance result

Title

INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication)
2011
Explanation

See the referenced specification

Pass
No

Conformance result

Title

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

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.

Metadata

File identifier
0214897c-7597-41ad-e054-002128a47908 XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2025-01-10
Metadata standard name
UK GEMINI
Metadata standard version

2.3

Metadata author
Organisation name Individual name Electronic mail address Role

British Geological Survey

enquiries@bgs.ac.uk

Point of contact
Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13606288

 
 

Overviews

overview

Spatial extent

thumbnail

Keywords

UK Location (INSPIRE)


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