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'''London Region Atlas of Topsoil Geochemistry'''<br>
'''Bristol and Gloucester regional guide'''<br>


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. . [[London Atlas: Geology | '''(Read the full article...)''']]
The area dealt with comprises the Cotswolds and the Severn Estuary region, and includes the greater part of the counties of Avon, Gloucestershire and Somerset (excluding west Somerset); also, for geological continuity, small parts of the counties of Gwent, Herefordshire, Worcestershire, Wiltshire and Dorset. Geologically speaking, it is one of the most varied districts of Britain, for, with the exception of the Ordovician and possibly the Permian, there is exposed at the surface every geological system from the Cambrian to the Cretaceous . . . [[Bristol and Gloucester region - an introduction | '''(Read the full article...)''']]

Latest revision as of 08:54, 6 January 2020

P894510.jpg

Bristol and Gloucester regional guide

The area dealt with comprises the Cotswolds and the Severn Estuary region, and includes the greater part of the counties of Avon, Gloucestershire and Somerset (excluding west Somerset); also, for geological continuity, small parts of the counties of Gwent, Herefordshire, Worcestershire, Wiltshire and Dorset. Geologically speaking, it is one of the most varied districts of Britain, for, with the exception of the Ordovician and possibly the Permian, there is exposed at the surface every geological system from the Cambrian to the Cretaceous . . . (Read the full article...)