Snowdon Hill Quarry () is a 0.6

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 ...

on the western outskirts of

Chard Chard (; '' Beta vulgaris'' subsp. ''vulgaris'', Cicla Group and Flavescens Group) is a green leafy vegetable. In the cultivars of the Flavescens Group, or Swiss chard, the leaf stalks are large and often prepared separately from the leaf b ...

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 1963. The site shows rock exposures through the

Upper Greensand Greensand or green sand is a sand or sandstone which has a greenish color. This term is specifically applied to shallow marine sediment that contains noticeable quantities of rounded greenish grains. These grains are called ''glauconies'' and co ...

and

Chalk Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Ch ...

which contain fossil crustaceans which are both unique and exceptionally well-preserved and support study of

palaeontology Paleontology, also spelled as palaeontology or palæontology, is the scientific study of the life of the past, mainly but not exclusively through the study of fossils. Paleontologists use fossils as a means to classify organisms, measure geo ...

in Britain. The unit has been dated to the subdivision of the Chalk known as the Turrilites acutus Zone, named after one of the characteristic fossils.English Nature citation sheet for the site
(accessed 9 August 2006)

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 1963 Geology of Somerset Quarries in Somerset Chard, Somerset