Duntulm Formation
| Duntulm Formation | |
|---|---|
| Stratigraphic range: | |
Exposures of limestone of the Duntulm Formation on the foreshore near Duntulm, Skye | |
| Type | Formation |
| Unit of | Great Estuarine Group |
| Underlies | Kilmaluag Formation |
| Overlies | Valtos Sandstone Formation |
| Thickness | Up to 55 m |
| Lithology | |
| Primary | Oyster beds |
| Other | Sandstone, Siltstone, Shale |
| Location | |
| Region | Scotland |
| Country | United Kingdom |
| Type section | |
| Named for | Duntulm |
The Duntulm Formation is a sedimentary geologic formation deposited in the Inner Hebrides, Scotland. The formation was previously known as the 'Lower Ostrea Beds', and dates to the Bathonian stage of the Middle Jurassic. The formation is noted for its highly fossiliferous oyster beds, which compose of the species Praeexogyra hebridica. The sedimentary sequence also forms part of the Great Estuarine Group.