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INFLUENCE OF PRESSURE, TEMPERATURE AND BULK COMPOSITION ON APPEARANCE OF GARNET IN ORTHOGNEISSES - EXAMPLE FROM SOUTH-HARRIS, SCOTLAND

Abstract:

Granulite facies metamorphism of the igneous complex of South Harris has produced garnet-clinopyroxene-plagioclase assemblages from olivine-normative rocks and 2 pyroxene-plagioclase-quartz assemblages from quartz-normative rocks. The appearance of garnet can be considered in terms of two complex reactions: A Olivine + plagioclase1 → (Ca,Mg,Fe) garnet + plagioclase2(olivine-normative)B Orthopyroxene + plagioclase1 → (Ca,Mg,Fe) garnet + plagioclase2 + quartz (quartz-normative). For bulk compos...

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Publication status:
Published

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Journal:
EARTH AND PLANETARY SCIENCE LETTERS
Volume:
26
Issue:
3
Pages:
299-311
Publication date:
1975-01-01
DOI:
ISSN:
0012-821X
URN:
uuid:1f86d311-bb0e-48f4-a306-c7d7e51ebade
Source identifiers:
172908
Local pid:
pubs:172908
Language:
English

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