High-K andesite petrogenesis and crustal evolution: Evidence from mafic and ultramafic xenoliths, Egmont Volcano (Mt. Taranaki) and comparisons with Ruapehu Volcano, North Island, New Zealand
Geochimica et Cosmochimica Acta(2016)
摘要
•Mafic xenoliths and andesites of Egmont Volcano formed in the same magmatic system.•Open and closed system fractional crystallisation controlled magmatic evolution.•Geothermobarometry indicates evolution in a polybaric magmatic system.•Amphibole fractionation can sequester water in the crust.
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