Dear colleagues, Are you fascinated by the deep interiors of planets or study minerals found hundreds to thousands of kilometers beneath our feet? Whether you work with experiments, computational models, or seismological data, if your research touches on the mantle or mantle phase transitions, this session is for you! Submit and abstract to: DI009. Mantle Phase Transitions and their Impact on Convection, Evolution, and Interior Structure In this session, we explore how phase transitions influence everything from mantle convection and slab behavior to the evolution and internal structure of terrestrial bodies. We’ll feature invited talks from experts across multiple disciplines (seismology, geodynamics, and mineral physics): * Jonathan Wolf – University of California, Berkeley * Ranpeng Li – GEOMAR Helmholtz Centre for Ocean Research Kiel and Kiel University * Jin Zhang – Texas A&M University We welcome contributions from all related fields. We especially encourage early-career researchers and students to present their new and exciting research! Session Abstract: Mineral phase transitions in the mantle impact the dynamics, evolution, and structure of planetary interiors. These transitions—governed by variations in pressure, temperature, and composition—can influence large-scale mantle convection, promote thermal and chemical stratification, and produce seismic discontinuities. However, understanding the dynamic impacts of mineral transitions remains challenging due to uncertainties in phase boundaries, the role of water and volatiles, variations in mineral assemblages, and their effects on physical properties such as rheology and thermal conductivity. This session invites contributions from experimental and computational mineral physics, geodynamics, seismology, and related disciplines to examine how phase transitions influence processes such as plume dynamics, slab stagnation, core–mantle interactions, and the development of large mantle structures. 📅 Abstract deadline: July 30 🔗 Submit here: https://urldefense.us/v3/__https://agu.confex.com/agu/agu25/prelim.cgi/Sessi... We hope to see you in New Orleans! Best, Allison Pease, Lars Stixrude, Arushi Saxena, and Heidi Krauss