Earth's climate has undergone pronounced changes across geological time, from greenhouse states to icehouse conditions and back, to name just a few of the changes. While orbital forcing and carbon-cycle feedbacks are well established as pacemakers of Quaternary glacial cycles, the slower geodynamic processes that set the baseline climate state and modulate it on million-year timescales remain actively debated. Plate tectonics governs the carbon cycle at its source through volcanic degassing, and at its sink, through the uplift of terrains that accelerate chemical weathering. Seafloor spreading rates and the lengths of mid-ocean ridges, continental configuration and position, and the opening and closing of ocean gateways reshape global ocean circulation and heat transport. Large igneous province eruptions have been implicated in mass extinctions and hyperthermal events, while orogenesis and continental rifting alter atmospheric circulation patterns and the long-term drawdown of CO2.

This session invites contributions that explore the connections between solid-Earth dynamics and climate across all timescales - from the multi-hundred-million-year supercontinent cycle to million-year and sub-million-year variability. We welcome observational, modeling, and data-driven studies, including plate kinematic reconstructions, mantle convection simulations, paleoclimate proxy analyses, geochemical models, and statistical or spectral approaches that quantify the co-evolution of tectonic and climatic records. We particularly encourage contributions that bridge disciplinary boundaries linking geodynamic forcing functions to their surface expression in the sedimentary, geochemical, and paleobiological records.