Dear colleagues, We are excited to announce our upcoming session at *Goldschmidt 2026* (12-17 July in Montreal, Canada) and warmly invite you to contribute an abstract. Session information: https://conf.goldschmidt.info/goldschmidt/2026/meetingapp.cgi/Session/8669 Submission link (deadline: February 26): https://conf.goldschmidt.info/goldschmidt/2026/cfp.cgi *04b - Deep Melts and Intraplate Magmatism: Linking Mantle Reservoirs, Lithosphere Processes, and Surface Expression* Intraplate volcanism provides a unique window into the structure, composition, and dynamics of Earth’s mantle. While mantle plumes have long been invoked to explain such volcanism, accumulating geochemical, geophysical, and experimental evidence highlights the critical role of the mantle lithosphere in controlling melting processes, magma compositions, and eruption dynamics. This session aims to bring together researchers investigating the generation, transport, and evolution of mantle melts, with a focus on their role as both chemical agents and dynamic components of Earth’s interior, and the balance between lithospheric and asthenospheric contributions to oceanic and continental intraplate volcanism. We invite researchers from diverse backgrounds (petrology, geochemistry, geophysics, geodynamics, data science) to contribute to this broadly-themed session on topics that include but are not limited to: - Role of lithospheric processes in intraplate magmatism - Incipient melting and volatile-driven processes - Modeling of melt transport through the lithosphere. - Isotopic systematics from source to surface - Oceanic vs continental intraplate volcanism - The definition of the lithosphere–asthenosphere boundary We hope to see you all in Montréal! *Keynote speaker: *Dr Janne Koornneef (Vrije Universiteit Amsterdam) *Session conveners:* Sarah Lambart (University of Utah), Isra Ezad (University of Western Australia), and Sébastien Pilet (Université de Lausanne) -- Sarah Lambart (she/her) - sarah.lambart@utah.edu Associate Professor in Igneous Processes University of Utah - Geology and Geophysics +1-801-792-3186