The Antarctic and Arctic regions are unique geodynamic environments where the solid earth, the cryosphere and the global climate system are intimately linked. This session will explore new data and modeling studies bearing on any aspect of the geological and geodynamic evolution of the polar regions, with a particular emphasis on interactions with the cryosphere. Topics may include crustal evolution, crust and mantle structure beneath the ice sheets, measurements of deformation and seismicity, geothermal heat flux, incorporation of geological, geodetic and geophysical measurements into geodynamic modeling of glacial isostatic adjustment, and the assimilation of ground-based measurements with data from current space missions.