Speeton Clay Formation

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Speeton Clay Formation
Stratigraphic range: Berriasian-Albian 145–100  Ma
Speeton Clay at Reighton Sands.JPG
Speeton Clay Formation at Reighton Sands, North Yorkshire
Type Geological formation
Unit of Cromer Knoll Group
Sub-unitsMembers A to D
Underlies Hunstanton Formation
Overlies Kimmeridge Clay Formation
Thickness100 m (330 ft) in outcrop
Lithology
Primary Claystone
Other Glauconite
Location
Coordinates 54°12′N0°12′W / 54.2°N 0.2°W / 54.2; -0.2
Approximate paleocoordinates 41°00′S9°18′E / 41.0°S 9.3°E / -41.0; 9.3
Region Yorkshire
Country United Kingdom
Extent North Sea Graben, eastern England
Type section
Named for Speeton
United Kingdom relief location map.jpg
Green pog.svg
Location of the formation
Meyeria ornata, a lobster from the Speeton Clay Meyeria ornata Speeton.jpg
Meyeria ornata, a lobster from the Speeton Clay

The Speeton Clay Formation (SpC) [1] is a Lower Cretaceous geological formation in Yorkshire, northern England. Unlike the contemporaneous terrestrial Wealden Group to the south, the Speeton Clay was deposited in marine conditions. The most common fossils in the unit are belemnites, followed by ammonites and the lobster Meyeria ornata. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus. [2]

Contents

The formation is named after the village of Speeton in North Yorkshire.

Fossil content

The following fossils have been reported from the formation: [3]

See also

References

  1. Speeton Clay Formation - BGS
  2. Weishampel, et al. (2004). "Dinosaur distribution." pp. 517–607.
  3. Speeton Clay Formation at Fossilworks.org
  4. Fischer et al., 2012b
  5. Fischer et al., 2012a
  6. Norman & Barrett, 2002
  7. Mulder & Fraaije, 2016
  8. Benson & Druckenmiller, 2014
  9. 1 2 3 4 5 6 7 8 9 10 11 12 13 Underwood et al., 1999
  10. Gale, 2019

Bibliography

Further reading