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Holwell Quarries

Geology of SomersetQuarries in the Mendip HillsSites of Special Scientific Interest in SomersetSites of Special Scientific Interest notified in 1952Use British English from February 2023
Holwellquarry
Holwellquarry

Holwell Quarries (grid reference ST726450) is a 1.3-hectare (3.2-acre) geological Site of Special Scientific Interest at Holwell near Nunney on the Mendip Hills in Somerset, notified in 1952. Holwell Quarries represent an internationally important geological locality. A comprehensive assemblage of Triassic (including Rhaetic), Lower Jurassic and Middle Jurassic fissure fillings are well displayed. The Rhaetic fissure fillings have yielded the richest assemblage of vertebrate faunas known from the British Triassic. Fissure deposits have also yielded 8 or 9 genera of Reptiles: a Crocodilian, a Placodont (the first record in Britain of this sub-order), and the dinosaurs Thecodontosaurus and Palaeosaurus. The Lower Jurassic fissure fillings yield ammonites and brachiopods which are important in dating these deposits.

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Holwell Quarries
A361,

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N 51.20355 ° E -2.39357 °
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A361
BA11 4PX
England, United Kingdom
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Holwellquarry
Holwellquarry
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