Large Igneous Provinces (LIPs) and hotspot systems represent major expressions of mantle melting, magma transport through the lithosphere, and rapid crustal emplacement. Their development involves a wide range of coupled mantle and crustal processes, including plume dynamics, plume-ridge interaction, lithospheric architecture, continental extension and breakup, magma storage, differentiation and assimilation, and the emplacement of intrusive and extrusive complexes forming new continental and oceanic crust. Increasing evidence shows that LIPs and hotspot tracks are characterised by strong temporal variability in magma supply, composition, and eruptive behaviour, spanning timescales from individual eruptions to million-year pulses. These magmatic fluctuations play a key role in crust-mantle mass transfer, the localisation of critical mineral resources, volatile release, and associated climatic and environmental perturbations.

Despite their importance, the tempo, magnitude, and physical controls of melt generation, transport, and emplacement in LIPs and hotspot systems remain incompletely constrained. This session seeks contributions that investigate the mechanisms driving temporal patterns in magmatism--from mantle melting dynamics and plume pulsations to melt migration, storage, and eruption--and how these processes propagate from depth to surface expressions such as lava piles, seaward-dipping reflectors, volcanic rifted margins, and hotspot island chains. We particularly encourage interdisciplinary studies combining high-resolution geochronology, stratigraphy, petrology, trace-element and isotopic geochemistry, geophysical imaging, numerical or analogue modelling, and environmental proxy records.

We also welcome contributions exploring the broader consequences of pulsed magmatism, including links to climate change, volatile and nutrient fluxes, ecosystem disruption or creation, island and seamount corridor dynamics, and biogeographic and macroevolutionary patterns. The goal of this session is to build a mechanistic, multiscale framework for the generation and temporality of hotspot and LIP magmatism, and to quantify its cascading effects on plate tectonics, Earth-surface systems, and life through geological time.