Trepassey Formation
| Trepassey Formation | |
|---|---|
| Stratigraphic range: Ediacaran | |
| Type | Formation |
| Unit of | St John's Group |
| Sub-units | Port Union and Catalina Members |
| Underlies | Fermeuse Formation |
| Overlies | Mistaken Point Formation |
| Thickness | 300 m (984 ft) |
| Lithology | |
| Primary | Gray Sandstone |
| Other | Shale, Tuff |
| Location | |
| Region | Newfoundland |
| Country | Canada |
Occurrence in southeast NL | |
The Trepassey Formation is a geologic formation that crops out in Newfoundland, which consists of gray sandstones and tuffaceous rocks. It preserves fossils dating back to the Ediacaran period.