BGS EarthServer - Superficial Thickness Map
This gives the thickness of unconsolidated (not solid rock) deposits over the UK.
This dataset is for users who are seeking information about the depth to bedrock/thickness of Quaternary deposits across Great Britain. The transition between Quaternary and Bedrock units is is known as 'geological rockhead' and is an important surface for geologists, civil engineers, hydrogeologists and environmental scientists because it is where most physical and chemical properties of the deposits dramatically change. Strength, lithology, conductivity, porosity, permeability are most strongly affected by this transition surface, so an understanding of how deep it lies beneath ordnance datum is vital.
Examples of the kinds of query we would like to perform are:
- Get thickness of superficial deposits at a certain point.
- Calculate volume of superficial deposits in a given area.
- Get vertical cross-section along a given line.
The simple client demonstration enables selection of part of the data, turning the thickness values into an image, highlighting areas of certain thicknesses and calculating volumes.