Earth:Frænkelryggen Formation

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Frænkelryggen Formation
Stratigraphic range: Lochkovian
413.5–411 Ma
TypeFormation
Unit ofRed Bay Group
UnderliesBen Nevis Formation
OverliesAndréebreen Formation
Lithology
PrimarySandstone
OtherShale
Location
Coordinates [ ⚑ ] : 79°42′N 12°30′E / 79.7°N 12.5°E / 79.7; 12.5
Paleocoordinates [ ⚑ ] 6°18′N 17°54′W / 6.3°N 17.9°W / 6.3; -17.9
RegionSvalbard
Country Norway
Type section
Named forFrænkelryggen (583 m (1,913 ft))
Named byKiaer
Year defined1918
Frænkelryggen Formation is located in Svalbard
Frænkelryggen Formation
Frænkelryggen Formation (Svalbard)

The Frænkelryggen Formation is a geologic formation in Svalbard, Norway . The fluvial sandstones and green shales preserve flora and early fish fossils dating back to the Lochkovian stage of the Early Devonian period.

Description

Defined at the Frænkelryggen mountain (583 m (1,913 ft)) by Kiaer in 1918,[1] the formation was originally described as Silurian,[2] later dating of the formation provided likely ages between 413.5 and 411 Ma, dating the formation to the Lochkovian stage of the Early Devonian.[3] The formation belongs to the Red Bay Group, conformably overlying the Andréebreen Formation and overlain conformably by the Ben Nevis Formation.[4]

The formation comprises sandstone and green shales deposited in a fluvial environment.

Fossil content

The Frænkelryggen Formation has provided fossils of:[2][5]

Vertebrates


Flora


See also

References

  1. Dallmann & Mørk, 1991, p.129
  2. 2.0 2.1 Red Bay Series at Fossilworks.org
  3. King & Rücklin, 2020, p.3
  4. Pernègre & Blieck, 2016, p.8
  5. Hoeg, 1942
  6. Blieck & Heintz, 1983, p.63
  7. Blieck & Heintz, 1983, p.51
  8. Blieck & Heintz, 1983, p.55
  9. Blieck & Heintz, 1983, p.57
  10. 10.0 10.1 Scott, 2011, p.126
  11. Scott, 2011, p.64

Bibliography

  • King, Benedict, and Martin Rücklin. 2020. Tip dating with fossil sites and stratigraphic sequences. PeerJ 8. 1–11. doi:10.7717/peerj.9368
  • Pernègre, Vincent N., and Alain Blieck. 2016. A revised heterostracan-based ichthyostratigraphy of the Wood Bay Formation (Lower Devonian, Spitsbergen), and correlation with Russian Arctic archipelagos. Geodiversitas 38. 5–20. doi:10.5252/g2016n1a1
  • Scott, Bradley Raymond. 2011. Description of new species of Osteotraci from the Man on the Hill locality, Northwest Territories, Canada, with consideration of the phylogenetic and biogeographic significance of the new taxa, 1–302. University of Alberta.
  • Dallmann, W.K., and A. Mørk. 1991. Stratigraphical dictionary for Svalbard. Norsk Polarinstitut Rapportserie 74. 1–190.
  • Blieck, Alain, and Natascha Heintz. 1983. The Cyathaspids of the Red Bay Group (Lower Devonian) of Spitsbergen. Polar Research XIII. 49–74.
  • Hoeg, O. A. 1942. The Downtonian and Devonian Flora of Spitsbergen. Skrifter 83. ..

Further reading

  • Ørvig, T. 1969. The vertebrate fauna of the Primaeva beds of the Frænkelryggen Formation of Vestspitsbergen and its biostratigraphic significance. Lethaia 2. 219–239.