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A reappraisal of the conditions of deposition of the Maentwrog Beds (Upper Cambrian) at Porth Ceiriad, North Wales

Published online by Cambridge University Press:  01 May 2009

P. K. Bose
P. K. Bose
Affiliation:
Department of Geological Sciences, Jadavpur University, Calcutta, 700032, India
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Summary

The marine Maentwrog Beds comprise a repetition of sand and mud facies and follow a non-sequence. A shallow water depositional environment is inferred from the nature of the basal unit (with stromatolites and intraformational conglomerate), and hummocky cross-stratification and mud-draped erosion surfaces. The bulk of the formation was deposited between fair weather and storm wave base, the sand facies representing storm depositional events.

Type
Articles
Information
Geological Magazine , Volume 120 , Issue 1 , January 1983 , pp. 73 - 80
Copyright
Copyright © Cambridge University Press 1983

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