| Unitof: | Musgravetown Group |
| Period: | Ediacaran |
| Prilithology: | Marine sediments |
| Type: | Formation |
| Namedby: | King, 1988 |
| Thickness: | 600-1000 m[1] |
| Map: | Heart's Content Formation map.svg |
The Heart's Content Formation is a formation of dark grey/black shales and mudstones, with occasional silts and sands, cropping out in Newfoundland.[2]