|Site of Special Scientific Interest|
|Area of Search||Avon|
|Area||13.1 acres (0.053 km2; 0.0205 sq mi)|
|Natural England website|
Aust Cliff (grid reference ) is a 5.3 hectare geological Site of Special Scientific Interest adjacent to the Severn Estuary, near the village of Aust, South Gloucestershire, notified in 1954. The Severn Bridge crosses the cliff.
The lower part of the cliff is a red mudstone, with bands of nodules of pinkish-white alabaster. Above the red mudstone is green mudstone, followed by the Rhaetic bone bed at the base of a band of black shale. Above the shale are cream-coloured limestone beds.
|Pterosaurs of Aust Cliff|
- The story of landscape and geology in South Gloucestershire Archived 2008-09-08 at the Wayback Machine p.16
- Wellnhofer, Peter (1991). "Summary of Lower Jurassic Pterosaurs." The Illustrated Encyclopedia of Pterosaurs. London, UK: Salamander Books Limited. p. 79. ISBN 0-86101-566-5.
- English Nature citation sheet for the SSSI (accessed 9 July 2006)
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