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A revised age and correlation for the topmost Sholeshook Limestone Formation (Ashgill) of South Wales

Published online by Cambridge University Press:  01 May 2009

D. Price
D. Price
Affiliation:
Department of Geology, Sedgwick Museum, Downing Street, Cambridge, CB2 3EQ
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Summary

The age of the youngest part of the Sholeshook Limestone Formation is reconsidered in the light of recent advances in knowledge of Ashgill trilobite faunas. A low Rawtheyan (Zone 5) age is suggested and correlations are proposed with Ashgill rocks in the SW Berwyns and with part of the Swindale Limestone Formation of Cross Fell. The Cautleyan/Rawtheyan boundary is a level at which faunal changes are sufficiently pronounced to permit reliable and precise correlation.

Type
Articles
Information
Geological Magazine , Volume 117 , Issue 5 , September 1980 , pp. 485 - 489
Copyright
Copyright © Cambridge University Press 1980

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References

Dean, W. T. 1971–1978. The trilobites of the Chair of Kildare Limestone (Upper Ordovician) of eastern Ireland. Palaeontogr. Soc. (Monogr.): (1) 1–60, pls 1–25, 1971; (2) 61–98, pls 26–44, 1974; (3) 99–129, pls 45–52, 1978.Google Scholar
Ingham, J. K. 1966. The Ordovician rocks in the Cautley and Dent districts of Westmorland and Yorkshire. Proc. Yorks. geol. Soc. 35, 455–505.CrossRefGoogle Scholar
Ingham, J. K. 1970–1977. A monograph of the Upper Ordovician trilobites from the Cautley and Dent districts of Westmorland and Yorkshire. Palaeontogr. Soc. (Monogr.): (1) 1–58, pls 1–9, 1970; (2) 59–87, pls 10–18, 1974; (3) 89–121, pls 19–27, 1977.Google Scholar
Ingham, J. K., McNamara, K. J. & Rickards, R. B. 1978. The Upper Ordovician and Silurian Rocks in The Geology of the Lake District (ed. Moseley, F.). Yorks Geological Society.Google Scholar
Ingham, J. K. & Wright, A. D. 1970. A revised classification of the Ashgill Series. Lethaia 3, 233–42.CrossRefGoogle Scholar
King, W. B. R. 1923. The Upper Ordovician rocks of the south-western Berwyn Hills. Q. Jl geol. Soc. Lond. 79, 487–507.CrossRefGoogle Scholar
Lane, P. D. 1971. British Cheiruridae (Trilobita). Palaeontogr. Soc. (Monogr.) 1–95, pls. 1–16.Google Scholar
McNamara, K. J. 1979(a). Trilobites from the Coniston Limestone Group (Ashgill Series) of the Lake District, England. Palaeontology, 22, (1), 53–92, pls 7–12.Google Scholar
McNamara, K. J. 1979(b). The age, stratigraphy and genesis of the Coniston Limestone Group in the Southern Lake District. Geol. J. 14, 41–68.CrossRefGoogle Scholar
Price, D. 1973(a). The age and stratigraphy of the Sholeshook Limestone of Southwest Wales. Geol. J. 8, (2), 225–46.CrossRefGoogle Scholar
Price, D. 1973(b). The Phillipsinella parabola - Staurocephalus clavifrons fauna and Upper Ordovician correlation. Geol. Mag. 110, 535–41.CrossRefGoogle Scholar
Price, D. 1977. Species of Tretaspis (Trilobita) from the Ashgill Series in Wales. Palaeontology 20, (4), 763–92, pls 98–103.Google Scholar