About this Research Topic
Arc environments preserve evidence for huge diversities in both eruptive structures and products (for example from isolated monogenetic scoria cones to complex stratovolcanic edifices). Whether these structures are fed by complex transcrustal magmatic systems or isolated or coalescent dikes without evidence for stalling may reflect varying controls of crustal stress states. Following magma production in the mantle, local and regional crustal tectonics influence whether this mafic magma is able to reach the surface to erupt directly, or whether it will stall within the crust, mix with the resident magma or evolve by fractional crystallization and crustal assimilation into more differentiated products.
This has solved key conceptual problems in magma recharge and magma mixing yielding insights into the short-term forecasting of volcanic eruptions (e.g. why the arrival of new magma into the system might or might not trigger an eruption), but has generated new questions, such as the kinetics of the processes, the relevance of the overall geometry of the plumbing system and more importantly: the influence of the tectonics in the petrological process and magma transport/ascent through the lithosphere. The objective of this research topic is to address these questions from a multidisciplinary perspective, combining new approaches in petrology, structural geology, seismology and numerical/analytical modelling.
We welcome contributions with insightful manuscripts that explore:
• Numerical and analogue models on the link between tectonics and magmatism;
• Location and architecture of volcanic edifices;
• Response of magmatic systems to dynamic strain (e.g. earthquake-induced volcanic unrest), both at a local and regional scale;
• Relationships between timescale and pathways of magma ascent with crustal stress and structures - Insights on the geometry of magmatic systems including location, shapes & timescales;
• Microstructural insights and modelling of magmatic ascent mechanisms with respect to varying stress regimes;
• Relationships between volcanic eruptions and mega-earthquakes;
• Geophysical/Petrological methods and models to unravel magma storage and ascent conditions.
Contributions that integrate these topics from different perspectives (e.g. structural geology, petrology, geochronology, geophysics and numerical/analogue modelling) are particularly welcome.
Keywords: Transcrustal Magmatic Systems, Magmatic Plumbing Systems, Magma Residence Time, Interplay Between Tectonics and Magmatism, Timescale of Magmatic Processes
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.