Hirnant Limestone

Hirnant Limestone Stratigraphic range: Hirnantian ~446–444 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Lithology
Primary	Limestone
Location
Coordinates	52°54′N 3°36′W / 52.9°N 3.6°W / 52.9; -3.6Coordinates: 52°54′N 3°36′W / 52.9°N 3.6°W / 52.9; -3.6
Approximate paleocoordinates	38°06′S 16°54′W / 38.1°S 16.9°W / -38.1; -16.9
Region	England, Wales
Country	United Kingdom
Hirnant Limestone (the United Kingdom) Hirnant Limestone (Wales) Show map of the United KingdomShow map of WalesShow all

The Hirnant Limestone is an old name for a geologic formation in England and Wales, defining the Hirnantian. It preserves fossils dating back to the Ordovician period.^[1]

See also[]

• List of fossiliferous stratigraphic units in Wales

References[]

Further reading[]

• J. T. Temple. 1965. Upper Ordovician-Brachiopods from Poland and Britain. Acta Paleontologica Polonica 10:379-450
• J. W. Salter (5 May 1867). "Bala and Hirnant Limestone". Geological Magazine. Vol. 4, no. 3. pp. 233–234. doi:10.1017/S0016756800204548.{{cite magazine}}: CS1 maint: date and year (link)
• Adam Sedgwick (1848). "On the older Palaeozoic (protozoic) rocks of North Wales in Proc.Geol.Soc, London, Vol.4".