Pseudomorphic replacement of relict pyroxene by amphibole as a dehydration reaction during metamorphism pof volcanic rocks

TimothyJ Fagan; Howard W. Day

doi:10.14862/geochemproc.49.0.202.0

49th Annual Meeting of the Geochemical Society of Japan

Session ID : 1P47

DOI https://doi.org/10.14862/geochemproc.49.0.202.0

Conference information

Host: The Geochemical Society of Japan

Co-host: The Chemical Society of Japan

rock/crust

Pseudomorphic replacement of relict pyroxene by amphibole as a dehydration reaction during metamorphism pof volcanic rocks

*TimothyJ Fagan, Howard W. Day

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Keywords: metamorphism, volcanic rocks, clinopyroxene, amphibole

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Abstract

Mass balance modelling of mineral assemblages in greenschist facies metavolcanic rocks from the Sierra Nevada, California shows that consumption of matrix chlorite leads to whole-rock dehydration during the pseudomorphic replacement of relict

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