Cloford Quarry () is a
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 ...
to the south of the
A361 approximately north of the hamlet of
Cloford and west of
Nunney on the
Mendip Hills
The Mendip Hills (commonly called the Mendips) is a range of limestone hills to the south of Bristol and Bath, Somerset, Bath in Somerset, England. Running from Weston-super-Mare and the Bristol Channel in the west to the River Frome, Somerset ...
in
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 ...
. It was
notified in 1994.
It is a
Geological Conservation Review
The Geological Conservation Review (GCR) is produced by the UK's Joint Nature Conservation Committee. It is designed to identify those sites of national and international importance needed to show all the key scientific elements of the geological ...
site important for the exposures of sediments of
Triassic
The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is t ...
and
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. ...
age which occur in major fissures within the
Carboniferous Limestone laid down beneath the sea some 350 million years ago. Fissures, created by the uplift, folding and faulting of the Carboniferous Limestone, periodically opened and closed which were filled with deposits of
Rhaetic
Rhaetic or Raetic (), also known as Rhaetian, was a Tyrsenian language spoken in the ancient region of Rhaetia in the eastern Alps in pre-Roman and Roman times. It is documented by around 280 texts dated from the 5th through the 1st century BC ...
,
Hettangian
The Hettangian is the earliest age and lowest stage of the Jurassic Period of the geologic timescale. It spans the time between 201.3 ± 0.2 Ma and 199.3 ± 0.3 Ma (million years ago). The Hettangian follows the Rhaetian (part of the Triass ...
,
Sinemurian
In the geologic timescale, the Sinemurian is an age (geology), age and stage (stratigraphy), stage in the Early Jurassic, Early or Lower Jurassic epoch (geology), Epoch or series (stratigraphy), Series. It spans the time between 199.5 ±0.3 annu ...
,
Pliensbachian
The Pliensbachian is an age of the geologic timescale and stage in the stratigraphic column. It is part of the Early or Lower Jurassic Epoch or Series and spans the time between 192.9 ±0.3 Ma and 184.2 ±0.3 Ma (million years ago). The Plie ...
,
Toarcian
The Toarcian is, in the International Commission on Stratigraphy, ICS' geologic timescale, an age (geology), age and stage (stratigraphy), stage in the Early Jurassic, Early or Lower Jurassic. It spans the time between 184.2 Megaannum, Ma (million ...
and
Bathonian
In the geologic timescale the Bathonian is an age (geology), age and stage (stratigraphy), stage of the Middle Jurassic. It lasted from approximately 168.2 ±1.2 annum, Ma to around 165.3 ±1.1 Ma (million years ago). The Bathonian Age succeeds ...
ages. The surface also contains large number of borings made into it by bivalved
molluscs
Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...
living in the Jurassic seas. No other site in Britain shows such a variety and abundance of sediment-infilled fissures of this age.
In 2006 planning permission was granted for continued extraction of limestone until 2042.
Cloford Quarry was the main location used for the planet Lakertya in the ''
Doctor Who
''Doctor Who'' is a British science fiction television series broadcast by the BBC since 1963. The series, created by Sydney Newman, C. E. Webber and Donald Wilson (writer and producer), Donald Wilson, depicts the adventures of an extraterre ...
'' story ''
Time and the Rani
''Time and the Rani'' is the first serial of the 24th season of the British science fiction television series ''Doctor Who'', which was first broadcast in four weekly parts from 7 to 28 September 1987. It was the first to feature Sylvester McC ...
''.
Shots filmed here include the exterior of the Rani's laboratory.
See also
*
Quarries of the Mendip Hills
The Mendip Hills, (Mendips) in northern Somerset, are the most southerly Carboniferous Limestone uplands in Great Britain, Britain.
The Mendips comprise three major anticline, anticlinal structures, each with a core of older Devonian sandston ...
References
External links
English Nature website(SSSI information)
{{SSSIs Somerset geological
Sites of Special Scientific Interest in Somerset
Sites of Special Scientific Interest notified in 1994
Quarries in the Mendip Hills
Geology of Somerset