Dyrham Formation

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Dyrham Formation
Stratigraphic range: Pliensbachian
Seatown Beach (geograph 2664120).jpg
Type Formation
Unit of Lias Group
Sub-unitsEype Clay Member, Down Cliff Sand Member, Thorncombe Sand Member
Underlies Beacon Limestone Formation, Marlstone Rock Formation
Overlies Charmouth Mudstone Formation
Area Wessex Basin, Worcester Basin, East Midlands Shelf
Thickness~125 m
Lithology
Primarymudstone, silt, sand
Otherferruginous limestone
Location
Region England
Country United Kingdom
Type section
Named for Dyrham

The Dyrham Formation is a geologic formation in England. It preserves fossils dating back to the early part of the Jurassic period (Pliensbachian). [1]

See also

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References

  1. British Geological Survey. "Dyrham Formation". BGS Lexicon of Named Rock Units. Retrieved 8 March 2018.