OR/13/050 Modelled volume, purpose and scale

Gow, H, Cripps, C, Thorpe, S, Horabin, C, and Lee, J R. 2013. Model metadata report for the Somerset levels 3D geological model. British Geological Survey Internal Report, OR/13/050.

The project area encompasses the catchments of the rivers Parrett and Brue and their outflow to the Bristol Channel, as well as other areas of low elevation that collectively form the Somerset Levels (Figure 1 and 2). The 3D geological model of the Somerset Levels was initially developed in 2009/10 to increase our understanding of the marine, near-coastal and terrestrial response to environmental change during the Late Quaternary. The model has since been revised in 2014 to include all Quaternary deposits and generalised bedrock with a model cut-off depth of -28 m OD. The model can be used to highlight broad areas of environmental vulnerability that can be targeted during subsequent studies.

Figure 1    Project area and 1:50 000 scale superficial geology.

Figure 2    Project area and 1:625 000 scale bedrock geology. Also shown on the map are known fault systems.
These are shown on the map as dashed lines but have not been modelled.