Cloford Quarry is a 39.92 hectares (98.6 acre) geological Site of Special Scientific Interest to the south of the A361

A361 road

The A361 is a major road in England and at is the longest 3 digit A road in the UK. It runs south from Ilfracombe on the north Devon coast to Barnstaple, turning south-east to Tiverton then, after a break , north east from Taunton in Somerset through Street and Glastonbury, past Frome and then...

 approximately 350 metres (1,148.3 ft) north of the hamlet of Cloford and 1 kilometre (0.621372736649807 mi) west of Nunney

Nunney

Nunney is a village and civil parish near Frome in the Mendip local government district within the English county of Somerset. The parish includes the hamlet of Holwell.The name of the village comes from Old English and means Nunna's island....

 on the Mendip Hills

Mendip Hills

The Mendip Hills is a range of limestone hills to the south of Bristol and Bath in Somerset, England. Running east to west between Weston-super-Mare and Frome, the hills overlook the Somerset Levels to the south and the Avon Valley to the north...

 in Somerset

Somerset

The ceremonial and non-metropolitan county of Somerset in South West England borders Bristol and Gloucestershire to the north, Wiltshire to the east, Dorset to the south-east, and Devon to the south-west. It is partly bounded to the north and west by the Bristol Channel and the estuary of the...

. It was notified in 1994.

It is a Geological Conservation Review

Geological Conservation Review

The Geological Conservation Review is produced by the UK's Joint Nature Conservation Committee and is designed to identify those sites of national and international importance needed to show all the key scientific elements of the geological and geomorphological features of Britain...

 site important for the exposures of sediments of Triassic

Triassic

The Triassic is a geologic period and system that extends from about 250 to 200 Mya . As the first period of the Mesozoic Era, the Triassic follows the Permian and is followed by the Jurassic. Both the start and end of the Triassic are marked by major extinction events...

 and Jurassic

Jurassic

The Jurassic is a geologic period and system that extends from about Mya to  Mya, that is, from the end of the Triassic to the beginning of the Cretaceous. The Jurassic constitutes the middle period of the Mesozoic era, also known as the age of reptiles. The start of the period is marked by...

 age which occur in major fissures within the Carboniferous Limestone

Carboniferous limestone

Carboniferous Limestone is a term used to describe a variety of different types of limestone occurring widely across Great Britain and Ireland which were deposited during the Dinantian epoch of the Carboniferous period. They were formed between 363 and 325 million years ago...

 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

Rhaetian

The Rhaetian is in geochronology the latest age of the Triassic period or in chronostratigraphy the uppermost stage of the Triassic system. It lasted from 203.6 ± 1.5 to 199.6 ± 0.6 million years ago...

, Hettangian

Hettangian

The Hettangian is the earliest age or lowest stage of the Jurassic period of the geologic timescale. It spans the time between 199.6 ± 0.6 Ma and 196.5 ± 1 Ma . The Hettangian follows the Rhaetian and is followed by the Sinemurian.In Europe stratigraphy the Hettangian is a part of the time span in...

, Sinemurian

Sinemurian

In the geologic timescale, the Sinemurian is an age or stage in the Early or Lower Jurassic epoch or series. It spans the time between 196.5 ± 2 Ma and 189.6 ± 1.5 Ma...

, Pliensbachian

Pliensbachian

The Pliensbachian is an age of the geologic timescale or stage in the stratigraphic column. It is part of the Early or Lower Jurassic epoch or series and spans the time between 189.6 ± 1.5 Ma and 183 ± 1.5 Ma . The Pliensbachian is preceded by the Sinemurian and followed by the Toarcian.The...

, Toarcian

Toarcian

The Toarcian is, in the ICS' geologic timescale, an age or stage in the Early or Lower Jurassic. It spans the time between 183.0 Ma and 175.6 Ma...

 and Bathonian

Bathonian

In the geologic timescale the Bathonian is an age or stage of the Middle Jurassic. It lasted from approximately 167.7 Ma to around 164.7 Ma...

 ages. The surface also contains large number of borings made into it by bivalved molluscs 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

Doctor Who is a British science fiction television programme produced by the BBC. The programme depicts the adventures of a time-travelling humanoid alien known as the Doctor who explores the universe in a sentient time machine called the TARDIS that flies through time and space, whose exterior...

story Time and the Rani

Time and the Rani

Time and the Rani is a serial in the British science fiction television series Doctor Who, which was first broadcast in four weekly parts from 7 September to 28 September 1987. This story was the first to feature Sylvester McCoy as the Doctor. It also features the last appearance of the Sixth...

. Shots filmed here include the exterior of the Rani’s laboratory.

External links

• English Nature website (SSSI information)