The plate tectonics theory satisfactorily explains ~90% of the Earth’s volcanism, attributing it to convergent or divergent plate boundaries. However, the origin of significant amounts of anomalous volcanism within both continental and oceanic plate interiors (i.e. intraplate volcanism) as well as regions of excessive magmatism along ridges (i.e. Iceland), are not directly related to plate boundary processes, such as subduction or ridge extension. A variety of models have been developed to explain the origins of this enigmatic magmatism (e.g. mantle plumes, edge-driven convection etc.). Improvements in instrumentation, numerical modelling, the temporal and spatial resolution of data as well as the development of new techniques, have allowed us to better understand mantle dynamics and the Earth’s interior. Re-evaluation, refinement, and creation of new models for the origin of intraplate/anomalous magmatism have also provided better insights on deep mantle processes and shed light on the complex interactions between the Earth’s mantle and surface. Understanding what triggers magmatism unrelated to plate boundary processes is critical to understand the evolution of Earth’s mantle through time, especially before the initiation of plate tectonics and when supercontinents dominated, as well as for understanding magmatism on other planetary bodies in the solar system and beyond. This session aims to facilitate new understandings of intraplate and anomalous magmatism by bringing together diverse ideas, observations, and approaches from researchers around the globe.
We therefore welcome contributions dealing with the origins and evolution of intraplate or anomalous magmatism using a variety of approaches and techniques to tackle outstanding questions from any field, including: petrology, geochemistry, geochronology, isotope geochemistry, geophysics, geodynamics, seismology, and more. This session brings together scientists from any and all backgrounds who work on intraplate/anomalous magmatism using any approach, enhancing discussion and collaboration between disciplines.