The 2025 Interior of the Earth Gordon Research Conference (GRC) will be held on June 22-27 at Mount Holyoke College (South Hadley, Massachusetts, US). Our meeting theme is Volatiles, Melt and Viscosity: Consequences for Mantle Evolution and Climate System Interactions. Researchers at all career stages are encouraged to participate. The 2025 GRC will focus on volatiles, mantle melting processes, mantle viscosity and their consequences for the dynamics and evolution of the Earth’s interior and its interactions with the climate system. The meeting will explore the distribution of volatiles inside the Earth; their impacts on the production of partial melt and on mantle rheology; and their roles in the plate tectonic system (including volatile cycling in subduction zones), volcanic processes, metasomatic alteration of the lithosphere, mantle convection, and the evolution of Earth’s interior since its formation. We will also examine the processes that dominate the cycling of volatiles between the Earth’s interior and the atmosphere, both in the recent plate tectonic regime and billions of years ago. Another key topic is the role of mantle viscosity in determining the solid Earth response to the changing mass loads of ice sheets and sea-level.

Applications for this meeting must be submitted by May 25, 2025.