The Redmond Formation is a geologic formation in Newfoundland and Labrador. It preserves fossils dating back to the mid-Cretaceous (Cenomanian). It was a thin (up to 1.5 metres (4.9 ft) thick) and restricted unit traced for 152 metres (499 ft) in a single mine (Redmond No. 1) in Labrador, overlying Paleoproterozoic rocks, with large amounts of rubble, probably as a result of graben subsidence within the Labrador trough. Argillite facies within the formation have produced a diverse flora and insect assemblage.[1]
| Redmond Formation | |
|---|---|
| Stratigraphic range: Early Cenomanian | |
 Geologic map and outcrops of Redmond Formation | |
| Type | Formation |
| Underlies | Glacial deposits |
| Overlies | Sokoman Formation |
| Thickness | Up to 1.5 m (4.9 ft) |
| Lithology | |
| Primary | Argillite |
| Location | |
| Coordinates | 54°42′N 66°48′W / 54.7°N 66.8°W |
| Approximate paleocoordinates | 46°24′N 27°18′W / 46.4°N 27.3°W |
| Region | Newfoundland and Labrador |
| Country |  Canada |
| Extent | Redmond Basin |
| Type section | |
| Named for | Redmond No. 1 mine |
  Redmond Formation (Canada) | |
Fossil content edit
Mesoraphidiidae edit
Palaeoleontidae edit
Susumaniidae edit
Coleoptera edit
- Coleoptera indet.
Labradorocoleidae edit
Cupedidae edit
- Cupedidae indet.
- Haliplidae indet.
- Peltodytes sp.
Tettigarctidae edit
Dictyoptera edit
See also edit
References edit
Bibliography edit
- Demers Potvin, Alexandre; Jacek Szwedo; Cassia Paragnani, and Hans Larsson. 2020. First North American occurrence of hairy cicadas discovered in a Late Cretaceous Cenomanian exposure from Labrador, Canada. Acta Palaeontologica Polonica 65. 85–98. Accessed 2020-07-31.
- Demers Potvin, Alexandre V., and Hans C.E. Larsson. 2019. Palaeoclimatic reconstruction for a Cenomanian‐aged angiosperm flora near Schefferville, Labrador. Palaeontology 62(6). 1027–1048. . doi:10.1111/pala.12444 ISSN 0031-0239