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NNR [7] NCR [8] CAONB [8] Map: Citation Archived 2015-09-24 at the Wayback Machine: This is steeply sloping chalk pasture, which has a wide variety of grasses and flowers. A chalk stream along the valley floor adds wetland flora. Six orchid species have been recorded, including the fragrant orchid and bee orchid. Another notable plant is the ...
This disused chalk pit exposes a series of phosphate-rich chalk layers deposited 80 million years ago, during the Upper Cretaceous, under a warm sea which then covered a large part of Europe. The sediments provide evidence of severe earth movements in the area [ 185 ] and they are rich in macrofossils , especially belemnites .
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Houghton Regis Marl Lakes is a 20.1-hectare (50-acre) biological Site of Special Scientific Interest in Houghton Regis in Bedfordshire. It was notified under the Wildlife and Countryside Act 1981 in 1988. [1] [2] The site is a large disused chalk quarry, and it is listed by Geo-East as a "Chalk Place to Visit" due to its exposure of Totternhoe ...
The caves were used between 1830 and the 1860s for producing lime. The 25-inch to a mile (approx 1:2,500) Ordnance Survey map of 1862–63 describes the place as a "chalk pit" and marks an "engine house" and two remaining kilns. [9] A further investigation produced, among other evidence, a letter from the son of one of the workers. [10]
Some chalk mines were extensively large, with passages up to 25 feet (7.6 m) high and 15 feet (4.6 m) wide, their passages taking the form of a Norman arch. Because of chalk's softness, picks and shovels were used to excavate tunnels. Stepped slabs were dug into the chalk, allowing many miners to dig at the same time. Care had to be taken to ...
[1] [2] East Pit is part of the Cherry Hinton Pit biological Site of Special Scientific Interest, which excludes Limekiln Close but includes the neighbouring West Pit. [3] [4] The two parts of the site are both former chalk quarries. East Pit is surrounded by steep walls of chalk, and the base is wildflower grassland with areas of scrub.
The Chafford Gorges Nature Park is a 200-acre (81 ha) nature reserve located in Chafford Hundred, England, and managed by the Essex Wildlife Trust. [1] It includes two Sites of Special Scientific Interest. Grays Thurrock Chalk Pit has been designated for its biological interest, and Lion Pit for geological interest. [2]