The Caledonian structural-metamorphic evolution of south Troms, Norway

AJ Barker, MW Anderson

Research output: Contribution to journalArticlepeer-review

Abstract

The pelitic mineral assemblages of the metamorphic nappes within the Caledonides of Troms, Norway, suggest that peak metamorphic conditions attained during the Scandian phase of the Caledonian orogeny were of kyanite grade (mid- to upper amphibolite facies). Petrographical studies suggest that all nappes experienced a common tectono-thermal history during this event, but P-T estimates indicate that final re-equilibration temperatures were variable, ranging from 430-490°C/ (?) 6 kbar to 480-580°C/7-9 kbar and 610-680°C/6.2-7.3 kbar. The pressure values obtained are especially sensitive to plagioclase An-content and it is therefore crucial that the grains analysed are part of the equilibrium assemblage. -Authors
Original languageEnglish
Pages (from-to)385-390
Number of pages0
JournalEvolution of metamorphic belts
Volume0
Issue number0
Publication statusPublished - 1 Jan 1989

Fingerprint

Dive into the research topics of 'The Caledonian structural-metamorphic evolution of south Troms, Norway'. Together they form a unique fingerprint.

Cite this