Buckover Road Cutting () is a 1.7

hectare The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100- metre sides (1 hm2), or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is ...

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 o ...

near the town of

Thornbury, South Gloucestershire Thornbury is a market town and civil parish in the South Gloucestershire unitary authority area of England, about 12 miles (19 km) north of Bristol. It had a population of 12,063 at the 2011 Census. The population has risen to 14,496 in the 20 ...

, notified in 1967. The site shows an

unconformity An unconformity is a buried erosional or non-depositional surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous. In general, the older layer was exposed to erosion for an interval ...

between Silurian rocks and

quartz Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical ...

conglomerate of the Devonian period.The story of geology and landscape in South Gloucestershire
p.6

References

External links

English Nature citation sheet for the site
(accessed 9 July 2006) Sites of Special Scientific Interest in Avon Sites of Special Scientific Interest notified in 1967 Road cuttings in the United Kingdom Transport in Gloucestershire Geology of Gloucestershire Thornbury, Gloucestershire {{England-SSSI-stub