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The Ashgill Series near Welshpool, North Wales

Published online by Cambridge University Press:  01 May 2009

R. Cave  and
D. Price
R. Cave
Affiliation:
Institute of Geological Sciences, 5 Princes Gate, South Kensington, London, SW7 1QN
D. Price
Affiliation:
Department of Geology, Sedgwick Museum, Downing Street, Cambridge CB2 3EQ
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Summary

The name Trawscoed Mudstone Formation is proposed for previously undescribed mudstones cropping-out between the Caradoc Nod Glas Formation (‘Gwern-y-Brain Group’ of Wade, 1911) and the overstepping Rhuddanian Powis Castle Conglomerate Formation some 5 km NW of Welshpool, North Wales. The mudstones have a fauna, dominated by brachiopods and trilobites, which indicates that they are contained within the Cautleyan Stage of the Ashgill Series and suggests deposition in a deep shelf environment.

Type
Articles
Information
Geological Magazine , Volume 115 , Issue 3 , May 1978 , pp. 183 - 194
Copyright
Copyright © Cambridge University Press 1978

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