| 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.[1]