Map layer: arsenic (As) in shallow soils

Arsenic (As) in shallow soils

This map is based on analysis of 1154 shallow (0.05 – 0.25 m) soil samples collected at varying densities (ranging from one per 2 km2 to one per 5 km2, depending on underlying parent material) during the field campaigns of 2004 and 2012.

The image was generated in ArcGIS 10.1 using inverse distance weighting (IDW) of the nearest 12 samples within a variable search radius capped at 10 km. Cell size is 500 m. 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.  2000.  British Geological Survey, Keyworth, Nottingham.  ISBN 0 85272 378 4.

These data are delivered under the terms of the Open Government Licence, subject to the following acknowledgement accompanying the reproduced BGS materials: "Contains British Geological Survey materials © UKRI [year]".

Title Arsenic (As) in shallow soils
Source British Geological Survey
Contact BGS enquiries
Scale(s) 500 m x 500 m image grid cell resolution
Coverage South-west England (Cornwall and parts of Devon and Somerset)
Uses Local to national level use
Format and price JPEG, PDF, ESRI Grids and raster image viewer free to use under the Open Government Licence. Geochemical analytical data for stream sediments and soils, in Excel format, available on request subject to licence fee, IPR restrictions and data preparation fee.

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