Aust Cliff (grid reference ST565894) 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.
|Site of Special Scientific Interest|
|Area of Search||Avon|
|Area||13.1 acres (0.053 km2; 0.0205 sq mi)|
|Natural England website|
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.