Earth:Tranearth Group

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Tranearth Group
Stratigraphic range: Wenlock epoch of Silurian
TypeGroup
Unit ofWindermere Supergroup
Sub-unitsBrathay, Birk Riggs and Coldwell formations
UnderliesConiston Group
OverliesStockdale Group
Thickness500-1000m
Lithology
Primarylaminated hemipelagite, siltstone
Othersandstone, limestone
Location
RegionNorthern England
CountryEngland
Type section
Named forTranearth near Torver

The Tranearth Group is a Silurian lithostratigraphic group (a sequence of rock strata) in the southern Lake District and Howgill Fells of the Pennines of northern England . The name is derived from the locality of Tranearth near Torver in Cumbria. The Group is included within the Windermere Supergroup. It comprises laminated hemipelagites and siltstones and some sandstones and limestone which achieve a thickness of between 500 and 1000m. It is divided into a lower Brathay Formation which is overlain by the Birk Riggs Formation (not present in the Howgills) and then by an upper Coldwell Formation.[1]

References

  1. "Tranearth Group". The BGS Lexicon of Named Rock Units. British Geological Survey. http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=TNTH. Retrieved January 20, 2019. 
  • The Geological Society (2006). Brenchley, P.J.. ed. The Geology of England. (2. ed.). London: Geological Society Publishing. pp. 124,126. ISBN 9781862392007.