Nightingale Valley () is a 5.4
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 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 of ...
near the town of
Portishead,
North Somerset,
notified in 1989.
This site in the
Vale of Gordano is listed because of
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...
‘plateau-deposits’ which include ‘cannon-shot’ gravels, fine sandy gravels and silty gravels with a wide range of erratic
lithologies
The lithology of a rock unit is a description of its physical characteristics visible at outcrop, in hand or core samples, or with low magnification microscopy. Physical characteristics include colour, texture, grain size, and composition. Lit ...
.
English Nature citation sheet for the site
(accessed 12 July 2006)
References
Sites of Special Scientific Interest in Avon
Sites of Special Scientific Interest notified in 1989
{{England-SSSI-stub