| Gullane Formation | |
|---|---|
| Stratigraphic range: Visean | |
| Type | Formation | 
| Unit of | Strathclyde Group | 
| Sub-units | Craigleith Sandstone | 
| Thickness | c. 560 m | 
| Lithology | |
| Primary | Sandstone | 
| Other | Mudstone, siltstone, coal, seatrock, limestone, dolomite, ironstone | 
| Location | |
| Region | Scotland | 
| Country | United Kingdom | 
| Extent | Lothians, south Fife, Berwickshire | 
The Gullane Formation is a geological formation in Scotland. It preserves fossils dating back to the Visean stage (early Carboniferous period). [1]