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British Geological Survey's UK Compiled Topsoil Dataset provides predicted concentrations for 41 chemical elements across the UK. It consists of 82 georeferenced raster images derived from 57,966 topsoil samples collected between 1978 and 2014. The maps were produced via ordinary kriging interpolation of X-Ray Fluorescence spectrometry data.
Data is provided as 82 GeoTIFF raster images (500m cell size), not in tabular format; requires GIS software for spatial analysis. Original point sample data is not included.