| Bonavista Formation | |
|---|---|
| Stratigraphic range: Early Cambrian Preκ κ O S D C P T J K Pg N | |
 Bonavista Fm near Long Cove, Trinity Bay, NL | |
| Type | Formation |
| Unit of | Adeyton Group |
| Underlies | Smith Point Fm |
| Overlies | Random Fm |
| Location | |
| Region | Newfoundland |
| Country | Canada |
 Occurrence in southeast Newfoundland | |
The Bonavista Formation is an Early Cambrian formation which is exposed in outcrop in Newfoundland. The unit is dominated by red mudstone, with some purple-green mudstones, and the occasional interbedded nodular limestone. A gritty conglomerate is exposed at the base of the unit.