Hirnant Limestone
Geologial formation in United Kingdom
Hirnant Limestone | |
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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 | ![]() ![]() ![]() Hirnant Limestone (the United Kingdom) Show map of the United Kingdom![]() ![]() ![]() Hirnant Limestone (Wales) Show map of Wales |
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] It is now classified as the Hirnant Limestone Member of the Foel Y Ddinas Mudstones Formation.[2]
See also
References
- ^ Hirnant Limestone at Fossilworks.org
- ^ "Hirnant Limestone Member". British Geographical Survey.
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.
- Adam Sedgwick (1848). On the older Palaeozoic (protozoic) rocks of North Wales in Proc.Geol.Soc, London, Vol.4.