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The Nod Glas décollement of the Welsh Basin

Published online by Cambridge University Press:  01 May 2009

W. T. Pratt
W. T. Pratt
Affiliation:
Institute of Earth Studies, University College of Wales, Aberystwyth, Dyfed, SY23 3DB, U.K.
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Abstract

Structural, petrographic and metamorphic evidence is presented for localized end-Caledonian (Acadian) décollement within a ‘black shale’ formation in the central Welsh Basin, close to the Caradoc–Ashgill boundary. Similar detachments are probably widespread in other parts of the, paratectonic Caledonides with upright folds and cleavage, particularly in sequences with strong viscosity contrasts.

Type
Rapid Communications
Information
Geological Magazine , Volume 128 , Issue 3 , May 1991 , pp. 279 - 282
Copyright
Copyright © Cambridge University Press 1991

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