Ben Knowle () is a 1.5

hectare The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), that is, square metres (), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. ...

geological Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain, or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland, is a conservation designation denoting a protected area in the United Kingdom and Isle ...

Somerset Somerset ( , ), Archaism, archaically Somersetshire ( , , ) is a Ceremonial counties of England, ceremonial county in South West England. It is bordered by the Bristol Channel, Gloucestershire, and Bristol to the north, Wiltshire to the east ...

, notified in 1984. Ben Knowle is a natural outcrop of

Celestine Celestine is a given name and a surname. People Given name * Pope Celestine I (died 432) * Pope Celestine II (died 1144) * Pope Celestine III (c. 1106–1198) * Pope Celestine IV (died 1241) * Pope Celestine V (1215–1296) * Antipope Cel ...

rising from the

Somerset Levels The Somerset Levels are a coastal plain and wetland area of Somerset, England, running south from the Mendips to the Blackdown Hills. The Somerset Levels have an area of about and are bisected by the Polden Hills; the areas to the south ...

where contacts with the host rock, Tea Green

Marl Marl is an earthy material rich in carbonate minerals, Clay minerals, clays, and silt. When Lithification, hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae. M ...

, can be seen which illustrate the

stratigraphic Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy has three related subfields: lithost ...

setting of the mineral deposit.English Nature citation sheet for the site
(accessed 7 August 2006)

References

External links

English Nature website
(SSSI information) Sites of Special Scientific Interest in Somerset Sites of Special Scientific Interest notified in 1984 Geology of Somerset {{Somerset-geo-stub