Gilbert's Pit is a 5.2 hectare geological Site of Special Scientific Interest in Charlton in the Royal Borough of Greenwich. It was notified in 1985 and was formerly known as Charlton Sand Pit. It is also part of the Maryon Wilson Park and Gilbert's Pit Local Nature Reserve. It adjoins Maryon Park and is close to Maryon Wilson Park.
There was a Romano-British settlement on Cox's Mount, the summit of Gilbert's Pit, between the first and fifth centuries. The area was part of the ancient Hanging Wood. The Pit was part of the estate of the Maryon-Wilson family. From the late eighteenth century to 1889 it was worked for sand, and it was named after one of the managers, Mr E. Gilbert. It was purchased by the London County Council in 1930.
Gilbert's Pit is an important Lower Tertiary site, displaying one of the most complete sequence of sediments in Greater London. The Paleocene Thanet and Woolwich Beds date to around 55 million years ago. Some of the beds yield many fossils of plants, sponges, molluscs, fish and reptiles. The site has been studied for over 120 years and is the subject of a substantial literature.
The site is steeply sided. The main trees are birch and oak, and there is yellow gorse and broom on the upper slopes. On the lower slopes hawthorn provides nesting sites for birds.
Much of the site is fenced off. There is access to the part which is open from Charlton Lane and a path from the Gilbert's Pit information board in Maryon Park leads up to Cox's Mount, which has fine views over London.
|Wikimedia Commons has media related to Gilbert's Pit.|
- "Gilbert's Pit (Charlton) SSSI citation". Natural England.
- "Maryon Wilson Park and Gilbert's Pit". Local Nature Reserves. Natural England. 6 March 2013. Retrieved 22 January 2014.
- "Map of Maryon Wilson Park and Gilbert's Pit". Local Nature Reserves. Natural England. Retrieved 22 January 2014.
- Gilbert's Pit noticeboard
- Charlton Park Reminiscences Project, Maryon Park & Gilbert’s Pit
- Greenchain, Gilberts Pit & Maryon Park
- "Map of Gilbert's Pit (Charlton) (SSSI)". Natural England.
- "Charlton Sand Pit (Gilbert's Pit) (Palaeogene)". Joint Nature Conservation Committee.
- Green Chain Walk, Geotrail