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The petrologic evolution and pre-eruptive conditions of the rhyolitic Kos Plateau Tuff (Aegean arc) by Olivier Bachmann is a Earth and Planetary Sciences article available to read on EtoBox.

What is The petrologic evolution and pre-eruptive conditions of the rhyolitic Kos Plateau Tuff (Aegean arc) about?

The Kos Plateau Tuff is a large (>60 km 3 ) and young (160 k.y.) calc-alkaline, high-SiO 2 rhyolitic ignimbrite from the active Kos-Nisyros volcanic center in the Aegean arc (Greece). Combined textural, petrological and geochemical information suggest that (1) the system evolved dominantly by crystal fractionation from (mostly unerupted) more mafic parents, (2) the magma chamber grew over 250 000 years at shallow depth (∼1.5-2.5 kb) and was stored as a H 2 O-rich crystalline mush close to its solidus (∼670-750°C), (3) the eruption occurred after a reheating event triggered by the intrusion of hydrous mafic magma at the base of the rhyolitic mush. Rare banded pumices indicate that the mafic magma only mingled with a trivial portion of resident crystal-rich rhyolite; most of the mush was remobilized following partial melting of quartz and feldspars induced by advection of heat and volatiles from the underplated, hotter mafic influx.

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Author

Olivier Bachmann

Publisher

SP Versita; De Gruyter Open Sp. z o.o. ; Walter de Gruyter GmbH; Versita (Central European Science Publishers); Warsaw: "Versita"; Warsaw: De Gruyter Open; Warsaw: De Gruyter Poland (ISSN 2081-9900)

Published

2010

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)