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    The DiGMap Plus dataset is a series of GIS layers describing the engineering, geochemical and geophysical properties of geological materials from the base of pedological soil down to c. 3m depth (ie the uppermost c.2m of geology). These deposits display a variable degree of weathering, but still exhibit core characteristics relating to their lithologies. The 'Resistivity' dataset covers England, Scotland and Wales and characterises the material resistivity (based on modelled distributions of clay and moisture content, to 2m depth.