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P4. Insights on magma dynamics from pre- to post-eruptive conditions

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Congressi SGI-SIMP

Conveners:
Nicolò Nardini (Università di Catania)
Simone Costa (Università di Palermo)
Silvia Portale (Università di Catania)

nicolo.nardini@unict.it

Magma history, from genesis to crustal storage and surface emplacement, involves a series of interdependent processes, including cooling and crystallization, recharge, mixing and transfer across multiple depths. These processes occur under variable physicochemical conditions and leave a complex chemical and textural record in crystals and their carrier melts, which can be decoded through integrated petrological approaches. Recent advances in thermobarometry, diffusion chronometry and high-resolution 2D/3D/4D petrographic techniques, coupled with experimental petrology, thermodynamic and numerical modelling, have significantly improved constraints on magma dynamics. Together, these approaches allow the reconstruction of intensive variables and timescales of crystal mushes rejuvenation and magma residence, ascent and eruption along complex plumbing system architectures. These approaches raise key questions: why do some magmatic systems rapidly assemble and erupt, whereas others remain stored without erupting? What controls the efficiency and timing of magma transfer between reservoirs, and which processes trigger eruptions? How can deep magmatic processes and volcanic dynamics be reconstructed from the petrological, geochemical, textural, and stratigraphic signatures preserved in volcanic and plutonic products? This multidisciplinary session welcomes contributions adopting both classic and innovative approaches, including volcanological, petrological analyses, diffusion chronometry, experimental petrology, thermodynamic and numerical modelling, high-resolution imaging techniques and emerging data-driven methods.