| Renews Head Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Formation |
| Unit of | St John's Group [1] |
| Underlies |
|
| Overlies | Fermeuse Formation |
| Lithology | |
| Primary | Dark-gray Sandstone [3] |
| Other | Minor Shale [3] |
| Location | |
| Region | Newfoundland |
| Country | Canada |
 Outcrop occurrence | |
The Renews Head Formation is a geologic formation in Newfoundland and Labrador. It preserves fossils dating back to the Ediacaran period.
The Renews Head Formation is primarily composed of laminated dark-gray silty sandstones which weathers to a rusty-brown, alongside thin to medium-bedded sandstones containing minor black shales throughout. [3] [4] There are also thick, cross-bedded laminated gray sandstones, which are structureless in nature, and are inter-bedded with more black shales and thin sandstones. [4] With this, it has been suggested that these layers were deposited in a delta-front environment. [4]
It is overlain by the Cappahayden Formation near the town of Ferryland, and the Gibbett Hill Formation near the city of St. John's. [2] Meanwhile the formation is gradationally and conformably underlain by the Fermeuse Formation. [2] [4] [5]
The Renews Head Formation is home to a small range of discoidal forms, like Aspidella , which have been noted to bear faint radial markings similar to Hiemalora . [4] [6] There are also unnamed Sphaeromorph Acritarchs known from this formation. [7]
| Genus | Species | Notes | Images |
|---|---|---|---|
| Aspidella [4] |
| Enigmatic discoidal fossil. Specimens from this formation have faint Hiemalora-like radial markings. |  |
| Genus | Species | Notes | Images |
|---|---|---|---|
| Sphaeromorph Acritarchs [7] |
| Acritarchs. | |
