Options
Experimental measurements of the viscosity and melt structure of alkali basalts at high pressure and temperature
Language
English
Obiettivo Specifico
Status
Published
JCR Journal
JCR Journal
Title of the book
Issue/vol(year)
/12 (2022)
ISSN
2045-2322
Publisher
Nature PG
Pages (printed)
2599
Issued date
2022
Abstract
Volcanic eruptions are shallow phenomena that represent the final stage of density- and viscositydriven
processes of melt migration from source rocks at upper mantle depths. In this experimental
study, we investigated the effect of pressure (0.7–7.0 GPa) and temperature (1335–2000 °C) on the
viscosity and the atomic melt structure of a synthetic anhydrous primitive alkaline basalt, an analogue
of the pre-eruptive magma that likely feeds the Campi Flegrei Volcanic District at present day.
Obtained viscosities (0.5–3.0 Pa s), mobility (0.1–0.4 g cm3
Pa−
1 s−
1) and ascent velocity (1.5–6.0 m yr−
1)
are presented to support geochemical and geophysical observations of Campi Flegrei as a critical
volcanic district currently undergoing gradual magma recharge at depth.
processes of melt migration from source rocks at upper mantle depths. In this experimental
study, we investigated the effect of pressure (0.7–7.0 GPa) and temperature (1335–2000 °C) on the
viscosity and the atomic melt structure of a synthetic anhydrous primitive alkaline basalt, an analogue
of the pre-eruptive magma that likely feeds the Campi Flegrei Volcanic District at present day.
Obtained viscosities (0.5–3.0 Pa s), mobility (0.1–0.4 g cm3
Pa−
1 s−
1) and ascent velocity (1.5–6.0 m yr−
1)
are presented to support geochemical and geophysical observations of Campi Flegrei as a critical
volcanic district currently undergoing gradual magma recharge at depth.
Type
article