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Metamorphism in an accretionary prism: prehnite-pumpellyite facies metamorphism of the Southern Uplands of Scotland

Published online by Cambridge University Press:  03 November 2011

G. J. H. Oliver  and
J. K. Leggett
G. J. H. Oliver
Affiliation:
Department of Geology, University of St Andrews, Fife KY16 9ST, Scotland.
J. K. Leggett
Affiliation:
Department of Geology, Imperial College of Science and Technology, Prince Consort Road, London SW7 2BP, England.
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Abstract

The lower Palaeozoic rocks of the Southern Uplands of Scotland have been interpreted as an accretionary prism of slivers of oceanic basalt and associated deep sea sediments situated on the northern margin of the lape tus Ocean. Electron microprobe analyses confirm the presence of albite, prehnite, pumpellyite, chlorite, phengite, calcite, hematite and quartz-bearing metamorphic assemblages in basalts and basic-clast greywackes in the prism. The metamorphism is prehnite-pumpellyite facies and inferred to be related to tectonic burial of the various slices of the prism as they were accreted during the closure of the lape tus Ocean.

Keywords

basaltelectron microprobegreywackehydraulic fracturingIapetus Oceanlower Palaeozoicmetamorphic faciestectonic burial
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 71 , Issue 4 , 1980 , pp. 235 - 246
Copyright
Copyright © Royal Society of Edinburgh 1980

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