Eclogitic Amphibolites from the Grampian Moines

A. J. Baker*
Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR
*Present address: Grant Institute of Geology, West Mains Road, Edinburgh EH9 3JW.

Abstract: Amphibolites from the Grampian Moines of Scotland contain clinopyroxene-plagioclase symplectites and plagioclase-hornblende coronas around garnet. The clinopyroxene-plagioclase symplectites are interpreted as former omphacites. It is inferred that an eclogitic garnetomphacite-quartz assemblage once existed, but has since undergone partial reaction to an amphibolite facies hornblende-plagioclase assemblage. An early high-pressure metamorphic event occurred in parts of the Moine.

Keywords: amphibolites • eclogites • symplectites • coronas • Moines • Grampian Mountains

Mineralogical Magazine; June 1986 v. 50; no. 356; p. 217-221; DOI: 10.1180/minmag.1986.050.356.04
© 1986, The Mineralogical Society
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