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Redmond Formation





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The Redmond Formation is a geologic formationinNewfoundland 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
99.7–94.3 Ma

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Geologic map and outcrops of Redmond Formation
TypeFormation
UnderliesGlacial deposits
OverliesSokoman Formation
ThicknessUp to 1.5 m (4.9 ft)
Lithology
PrimaryArgillite
Location
Coordinates54°42′N 66°48′W / 54.7°N 66.8°W / 54.7; -66.8
Approximate paleocoordinates46°24′N 27°18′W / 46.4°N 27.3°W / 46.4; -27.3
RegionNewfoundland and Labrador
Country Canada
ExtentRedmond Basin
Type section
Named forRedmond No. 1 mine
Redmond Formation is located in Canada
Redmond Formation

Redmond Formation (Canada)

Fossil content

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Mesoraphidiidae

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Ephemeroptera

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Palaeoleontidae

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Susumaniidae

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Coleoptera

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Labradorocoleidae

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Cupedidae

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Tettigarctidae

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Dictyoptera

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See also

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References

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  1. ^ Demers Potvin & Larsson, 2019
  • ^ Mueller, André S.; Demers-Potvin, Alexandre V. (2024-06-01). "New Late Cretaceous (Cenomanian) fossil mayfly nymphs (Oligoneuriidae, Heptageniidae, Hexagenitidae) from the Redmond Formation, Labrador, Canada". Canadian Journal of Earth Sciences. 61 (6): 712–722. Bibcode:2024CaJES..61..712M. doi:10.1139/cjes-2023-0133. ISSN 0008-4077.
  • ^ Demers Potvin et al., 2020
  • Bibliography

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    Retrieved from "https://en.wikipedia.org/w/index.php?title=Redmond_Formation&oldid=1234981620"
     



    Last edited on 17 July 2024, at 03:49  





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    This page was last edited on 17 July 2024, at 03:49 (UTC).

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