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Foraminiferid-encrusted ooids: evidence for ancient subtidal algal mats?

Published online by Cambridge University Press:  01 May 2009

M. R. Talbot
M. R. Talbot
Affiliation:
Department of GeologyUniversity of GhanaP.O. Box 58LegonAccraGhana
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Summary

Ooids and grapestones from some parts of the Corallian Beds (Oxfordian) contain encrustations of the foraminiferid Nubeculinella. Encrusted layers within ooids clearly reveal lengthy periods when the grains were stationary and not accreting carbonate laminae. It seems likely that during colonisation by the foraminiferids the ooids were immobilised beneath a subtidal algal mat and there are indications that the mats were sufficiently coherent to bind lumps of sediment together during disruption by burrowing organisms.

Type
Articles
Information
Geological Magazine , Volume 111 , Issue 4 , July 1974 , pp. 297 - 302
Copyright
Copyright © Cambridge University Press 1974

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