If you would like to understand how to build a dry stone wall, why not join one of our Courses for 2023.
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CANCELLED – DIGS Geoconservation Session, Crack Lane Quarry
November 12, 2020 @ 10:30 am - 1:30 pm
Dorset DSWA members may be interested in helping the DIGS group geoconservation workparty at Crack Lane Quarry, Langton Matravers.
The disused quarry at Crack Lane exposes the Broken Shell Limestone Bed, or Burr, used as ashlar and rubble-stone in many medieval buildings and walls, including Corfe Castle.
The quarry was also the source of Purbeck Marble which has been widely used for interior decorative features. However, Purbeck Marble is not very resilient to exterior use. Its constituent iron minerals, responsible for its colour, tend to oxidise when exposed. Still, rust-coloured lumps of weathered Purbeck Marble can be found in some local buildings and walls.
The Dorset’s Important Geological Sites (DIGS) Group conserves the County’s Local Geological Sites (LGS), also known as Regionally Important Geological Sites (RIGS). These are the geological equivalent of Local Nature Reserves.
For more information, and if you wish to help out, see the DIGS website