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London Region Atlas of Topsoil Geochemistry

The simplified geological map used in this atlas, and in particular for creating the soil parent material (PM) classes, is based on the classification used for radon mapping in England and Wales (Miles and Appleton, 2005). The area is underlain by Cretaceous and Palaeogene bedrock, which is covered in some areas by Quaternary superficial deposits. Artificial ground is not used as a soil PM class, because spatial information on the distribution of artificial ground in urban areas in the UK is incomplete. Parent material classes are summarised in Table 2 with an indication of the number of topsoil results associated with each class. . (Read the full article...)

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