Redmond Formation
Geologic formation in Newfoundland and Labrador, Canada
From Wikipedia, the free encyclopedia
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 | 54.7°N 66.8°W |
| Approximate paleocoordinates | 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
Animals
Mesoraphidiidae
- Alloraphidia dorfi
Ephemeroptera
- Alatuscapillus icarus
- Cruscolli sheppardae
- Protoligoneuria borealis[2]
Palaeoleontidae
- Palaeoleon ferrogeneticus
Susumaniidae
- Palaeopteron complexum
Coleoptera
- Coleoptera indet.
Labradorocoleidae
- Labradorocoleus carpenteri
Cupedidae
- Cupedidae indet.
- Haliplidae indet.
- Peltodytes sp.
Tettigarctidae
- Maculaferrum blaisi[3]
Dictyoptera
- Cretatermes carpenteri
- Labradormantis guilbaulti
Plants
- Andromeda sp.[4]
- A. novaecaesarae
- A. parlatorii
- ‘Aralia’ groenlandica
- Araliopsoides cretacea
- Celastrophyllum sp.
- C. albaedomus
- C. brittonianum
- Cissites sp.
- Crassidenticulum sp.
- Daphnophyllum dakotense
- ‘Densinervum’ kauli
- Dicotylophyllum sp.
- Diospyros primaeva
- Dryandroides lanceolata
- Dryandroides sp.
- Ficus berthoudi
- Liriodendron simplex
- Liriodendropsis simplex
- Magnolia
- Magnolia sp.
- Magnolia amplifolia
- Menispermites sp.
- M. obtusiloba
- M. trilobatus
- Platanus sp.
- P. heerii
- P. shirleyensis
- Salix newberryana
- Sassafras acutilobum
- ‘Sterculia’ lugubris