Tranearth Group

Tranearth Group
Stratigraphic range: Wenlock epoch of Silurian
Type	Group
Unit of	Windermere Supergroup
Sub-units	Brathay, Birk Riggs and Coldwell formations
Underlies	Coniston Group
Overlies	Stockdale Group
Thickness	500–1,000 m (1,600–3,300 ft)
Lithology
Primary	laminated hemipelagite, siltstone
Other	sandstone, limestone
Location
Region	Northern England
Country	England
Type section
Named for	Tranearth 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 1,000 m (1,600 and 3,300 ft). 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.

References

• The Geological Society (2006). Brenchley, P.J. (ed.). The Geology of England (2. ed.). London: Geological Society Publishing. pp. 124, 126. ISBN 9781862392007.