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.
INSPIRE
Identification
- File identifier
- 0214897c-7597-41ad-e054-002128a47908 XML
- Resource type
- dataset
Online resource
Resource identifier
- Metadata Language
- English (en)
- Spatial representation type
- grid
Encoding
- Format
-
Web delivery of colour enhanced geochemical images.
- Format
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Via TELLUS SW Project Portal
- Version
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1.0
- Format
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Digital data - Excel Workbook/Access Database
- Version
-
1.0
Projection
Classification of data and services
- Topic category
-
- Geoscientific information
Classification of data and services
Coupled resource
Coupled resource
Classification of data and services
Coupled resource
Coupled resource
Keywords
- GEMET - INSPIRE themes, version 1.0
- BGS Thesaurus of Geosciences
-
-
UK Location (INSPIRE)
-
Soil chemistry
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Geology
-
Geochemistry
-
Stream sampling
-
Geographic coverage
Temporal reference
Temporal extent
Temporal extent
- Dataset Reference Date ()
- 1968
Quality and validity
- Lineage
-
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.
- Denominator
- 50000
Conformity
Conformity
Conformity
Conformity
Conformity
Conformity
- Explanation
-
See the referenced specification
Restrictions on access and use
- Access constraints
- no limitations
- Access 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.
- Access 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.
- Access 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. iprdigital@bgs.ac 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.
Responsible organization (s)
Contact for the resource
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
Responsible organization (s)
Contact for the resource
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
Metadata information
Contact for the metadata
- Organisation name
-
British Geological Survey
-
enquiries@bgs.ac enquiries@bgs.ac.uk
- Metadata Date
- 2024-03-28
- Metadata Language
- English (en)