|Site of Special Scientific Interest|
|Area||9.65 ha (23.85 acres)|
|Area of Search||Wiltshire|
|Interest||Biological and Geological|
|Website: SAC at MAgiC|
Chilmark Quarries (grid reference ) is a 9.65 hectare biological and geological Site of Special Scientific Interest (SSSI), in the ravine south of the village of Chilmark in Wiltshire, England.
The western section of the site is in Chilmark civil parish, while the eastern section (separated by a minor road) is in Teffont parish.
Chilmark stone, a form of limestone, was mined here since medieval times and used for buildings including Salisbury Cathedral. In 1936 the quarry and mines were bought by the Air Ministry and used as a storage area for RAF Chilmark, a munitions depot, until 1995. Stone extraction continued on a small scale until the quarry closed c. 2007. Similar stone is still mined at Chicksgrove Quarry, 1.3 miles (2.1 km) to the southwest.
Within the disused quarries on the western side of the valley, there is a system of caves in which up to 150 bats, of several species, roost in winter. The largest British wintering roost of Bechstein's Bat is here. Other species which utilise the site include Greater and Lesser Horseshoe Bats, Daubenton's Bat, Natterer's Bat and Brandt's Bat.
The quarry has exposures of Jurassic rocks, part of the Purbeckian beds. It is a fine building stone used for the main structure of Salisbury Cathedral and many other local buildings. Purbeckian limestones, possibly from Chilmark, were used for packing around at least one of the upright stones of Stonehenge, for houses on an Iron Age site at Fifield Bavant, and for Rockbourne Roman Villa and other Roman sites. Chilmark stone is easy to work, but long-lived in use. Fossils are uncommon in the beds recently being extracted, but include ammonites and other shells.
- "Citation sheet for Chilmark Quarries" (PDF). Retrieved 29 March 2016.
- "Chilmark Quarries: Citation for Special Area of Conservation UK0016373". Natural England. May 2005. Retrieved 29 March 2016.
- Crowley, D.A. (ed.). "Victoria County History - Wiltshire - Vol 13 pp114-125 - Parishes: Chilmark". British History Online. University of London. Retrieved 29 March 2016.
- "Question: Chilmark stone". Wiltshire Community History. Wiltshire Council. December 2004. Retrieved 29 March 2016.
- "Planning Brief: RAF Chilmark" (PDF). Salisbury District Council. December 1999. Retrieved 29 March 2016.
- "Chicksgrove Stone". Chicksgrove & Chilmark. Lovell Stone Group. Retrieved 29 March 2016.
- Corrections to 1996 paper
|Wikimedia Commons has media related to Chilmark Quarry.|