S05 - Equilibrium/disequilibrium processes during magma ascent: new insights from laboratory and modelling studies and observations of the natural system
- Giuseppe La Spina*, Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania Osservatorio Etneo, Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.
- Paola Stabile, School of Science and Technology, Geology Division, University of Camerino, Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.
- Michael R. Carroll, School of Science and Technology, Geology Division, University of Camerino, Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.
- Margherita Polacci, Department of Earth and Environmental Sciences, University of Manchester, Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.
- *Corresponding
- Processes occurring during magma ascent within volcanic conduits include crystallization, vesiculation, magma mingling, and decompression. These processes influence magma ascent dynamics, rheology, fragmentation, eruptive style. In the past, these processes were assumed to occur at equilibrium conditions, but the importance of non-equilibrium phenomena is now well established. Constraining disequilibrium in magmatic systems is fundamental to quantify magmatic timescales at syn-eruptive conditions, and consequences for eruptive styles.
- Experimental petrologic studies have advanced our knowledge of magma evolution under both equilibrium and disequilibrium conditions. Furthermore, in-situ 4D tomography experiments are invaluable for investigating equilibrium and disequilibrium of magmatic and volcanic processes in terms of magma kinetic and rheological evolution in real time. Moreover, recent theoretical/numerical modelling considers both equilibrium and disequilibrium processes, integrating results derived from laboratory experiments and natural observations to provide new insights on syn-eruptive processes and eruptive style transitions.
- This session aims to collect recent investigations on disequilibrium to equilibrium magmatic processes using laboratory, modelling and/or field observations. We particularly encourage innovative and multidisciplinary contributions from early career scientists, involving experimental and theoretical/numerical modelling studies, with applications to magma genesis, differentiation and migration, and timescales of magma transport and eruptive style.
