| Heather Formation | |
| Type: | Formation |
| Age: | Bathonian–Oxfordian |
| Period: | Jurassic |
| Prilithology: | Claystone |
| Otherlithology: | Siltstone |
| Region: | North Sea |
| Country: | Norway, United Kingdom |
| Underlies: | Kimmeridge Clay Formation |
| Overlies: | Pentland Formation, Brent Group |
| Thickness: | up to 700 m (Central North Sea) |
The Heather Formation is a geological formation occurs in the North Sea, offshore the United Kingdom and Norway. It preserves fossils from the Bathonian to Oxfordian stages of the Middle to Late Jurassic period and was deposited in an open marine depositional environment.[1] [2]