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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 ...
Boxford Chalk Pit is a 0.4-hectare (0.99-acre) geological Site of Special Scientific Interest in Boxford in Berkshire. [1] [2] It is a Geological Conservation Review site. [3] [4] This site has a unique succession of tilted beds dating to the Upper Cretaceous, between the late Coniacian and the Santonian, from around 87 to 84 million years ago.
Catton Grove Chalk Pit is a 0.6-hectare (1.5-acre) geological Site of Special Scientific Interest on the northern outskirts of Norwich in Norfolk, England. [1] [2] It is a Geological Conservation Review site. [3] This Cretaceous site exposes rocks dating to the late Campanian, around 75 million years ago, and it is the type site for the Catton ...
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]
Purfleet Chalk Pits is a 10.7-hectare (26-acre) geological Site of Special Scientific Interest in Purfleet in Essex. [1] [2] It is a Geological Conservation Review site.[3]The chalk pits expose sands and gravels which are associated with the ancient course of the River Thames.
Caistor St Edmund Chalk Pit is a 23.6-hectare (58-acre) geological Site of Special Scientific Interest south of Norwich in Norfolk. [1] [2] It is a Geological Conservation Review site. [3] [4] This site provides the best exposure of the late Campanian Beeston Chalk, around 75 million years ago.
The chalk tunnels came into being as a result of the exploitation of rich chalk deposits which lie under the surface. Starting in the Middle Ages, for hundreds of years, under Chełm's old city buildings enormous pits were dug from residents' cellars. The chalk was dug out by the inhabitants of Chełm, who took it straight from their cellars ...
Chinnor Chalk Pit is a 20.4-hectare (50-acre) geological Site of Special Scientific Interest south of Chinnor in Oxfordshire. [ 1 ] [ 2 ] It is a Geological Conservation Review site. [ 3 ]
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