Durlston Formation
| Durlston Formation | |
|---|---|
| Stratigraphic range: Berriasian | |
| Type | Formation | 
| Unit of | Purbeck Group | 
| Sub-units | Stair Hole Member, Peveril Point Member | 
| Underlies | Wessex Formation, Ashdown Formation | 
| Overlies | Lulworth Formation | 
| Thickness | 18 to 57 m | 
| Lithology | |
| Primary | limestone and mudstone | 
| Location | |
| Region | England | 
| Country | United Kingdom | 
| Type section | |
| Named for | Durlston Bay | 
The Durlston Formation is a geologic formation in England. Particularly in the Isle of Purbeck. It preserves fossils dating back to the Berriasian stage of the Lower Cretaceous.