Downfield Pit
Notification 1989 | | |
| Location map | Magic Map | |
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Downfield Pit is a 3.6-hectare (8.9-acre) geological
The site provides an example of the complex sequence of Pleistocene gravels and clays laid down by the River Thames when it flowed through the Vale of St Albans before the river was diverted south by the Anglian ice age around 450,000 years ago.[3] Downfield Pit is a key site linking the Thames and East Anglia regions during the Middle Pleistocene.[1]
The site is now very degraded, but a borehole could establish the sequence of deposits.[3] It is in two areas, both now within the Hanbury Manor Golf Course. The northern area is on a steeply sloping boundary of the course and the southern one is part of the course. They can be observed from Poles Lane.
See also
Wikimedia Commons has media related to Downfield Pit.
References
- ^ a b "Downfield Pit, Westmill citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 4 February 2015.
- ^ "Map of Downfield Pit, Westmill". Sites of Special Scientific Interest. Natural England. Retrieved 4 February 2015.
- ^ a b "A Geological Conservation Strategy for Hertfordshire" (PDF). Hertfordshire RIGS Group. 2003. p. 43. Archived from the original (PDF) on 24 September 2015. Retrieved 4 February 2015.