Magmatic and volcanic systems involve a range of dynamic processes that govern magma generation, ascent, emplacement, and eruption. The timescales of these processes are of paramount importance to understanding the evolution of magmatic reservoirs and mush zones during crystallisation, assimilation, mixing, and volatile exsolution. Depending on the ascent timescale, these processes may operate far from compositional and textural equilibrium, induced by rapidly changing environmental parameters (e.g., P, T, fO2).

Rates and mechanisms of crustal emplacement or eruption, are also crucial in characterising volcanic hazards. We welcome analytical, numerical, experimental, geophysical, and field-based studies addressing rates and timescales of volcanic and plutonic processes. These may include radiogenic isotope dating, mineral geospeedometry, in situ X-ray microtomography experiments, crystal size distribution analysis, and fluid dynamics. Also, we welcome interdisciplinary studies probing the mechanisms and timescales of volcanic phenomena. We finally encourage studies highlighting the role of time in characterising volcanic hazards and how improved knowledge adds societal support for fast response to rapidly evolving geological processes.