Unsupported browser

For a better experience, please update your browser to its latest version.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

BGS launches new clay shrink-swell maps

British Geological Survey (BGS) Geo Sure has published three dimensional clay shrinkage and swelling maps for the London and the Thames Valley.

figure 26 lc8

The new maps form part of the BGS’s Geo Sure range of natural subsidence products.

According to the BGS, the regional hazard susceptibility map identifies areas of potential shrink–swell hazard, in three dimensional space, at intervals down to 20m with the data classified on an A–E range of hazard susceptibility.

“The shrink-swell properties of the London Clay affect developers, construction companies, and local government due to increased costs of insurance, additional engineering works to stabilise land, or potential relocation of developments,” said BGS engineering geologist Lee Jones. “Information on the 3D distribution of shrink-swell properties permits identification of potential problems at the surface, in the shallow sub-surface, or deeper underground.”

The BGS has said that the data contained in the news maps has been produced by geologists, geotechnical specialists and information developers at the BGS, and are derived from the London geological model.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Links may be included in your comments but HTML is not permitted.