Identification

Title

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

Alternative title(s)

G-BASE for SW England

Abstract

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.

Resource type

dataset

Resource locator

http://www.bgs.ac.uk/gbase/home.html

name: G-BASE Homepage

description: This page provides details on one of the BGS's major science budget funded projects the Geochemical Baseline Survey of the Environment (G-BASE).

function: information

http://www.tellusgb.ac.uk/data/home.html

name: Tellus SW project web portal

description: 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)

function: information

Unique resource identifier

code

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

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Additional information source

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.

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

UK Location (INSPIRE)

Soil chemistry

Geology

Geochemistry

Stream sampling

originating controlled vocabulary

title

reference date

date type

revision

effective date

2022

Keyword set

keyword value

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

-5.7627

East bounding longitude

-3.3908

North bounding latitude

51.2764

South bounding latitude

49.9285

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

Cornwall [id=43750]

Extent group

authority code

title

reference date

date type

creation

effective date

1979

code identifying the extent

DEVON [id=164700]

Temporal reference

Temporal extent

Begin position

2012

End position

Dataset reference date

date type

creation

effective date

1968

Frequency of update

annually

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.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

false

explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Data format

name of format

Web delivery of colour enhanced geochemical images.

version of format

1.0

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

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.

Responsible organisations

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

distributor

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

originator

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

organisation name

British Geological Survey

full postal address

Environmental Science Centre,Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

+44 115 936 3100

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2024-12-28

Metadata language