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Structural observations on the Carboniferous Limestone of the North Wales coast

Published online by Cambridge University Press:  01 May 2009

R. A. H. Nichols
R. A. H. Nichols
Affiliation:
Department of Mineral Resources, Subsurface Geological Laboratory, Regina, Saskatchewan, Canada.
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Summary

Outcrops of Carboniferous Limestone were examined along the coast of North Wales around Penmon in Anglesey, and Great Orme's Head, Gloddaeth and Llanddulas in Caernarvonshire and Denbighshire.

Tectonic forces have folded, jointed and faulted the Limestone, but each area has reacted differently. The differences are discussed and the effects on the different limestone units illustrated.

Caledonian structures adjacent to the areas are briefly discussed. Variation in fold strike from north to east or south-east in the Carboniferous rocks is a reflection of the change in strike in the Lower Palaeozoic rocks, as is the northwest to north strike of the faults.

It is postulated that folding and faulting of the Carboniferous Limestone areas during the Hercynian orogeny was totally guided by Pre-Cambrian and Caledonian structural trends in Anglesey and on the mainland coast, and that the southern compression during the orogeny only accentuated pre-existing trends.

Type
Articles
Information
Geological Magazine , Volume 105 , Issue 3 , June 1968 , pp. 216 - 230
Copyright
Copyright © Cambridge University Press 1968

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References

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