This year's lecture was devoted to climate-influencing processes whose causes are related to phenomena internal to the earth. These geological forcings have highly varied climatic impacts in terms of amplitude and spatial scale. What's more, these forcings operate on very different timescales, from one year to one billion years, and are therefore superimposed on other causes of climate change.
I have approached this lecture by considering the impact of paleogeographic changes caused by global geodynamics. On timescales of several tens of millions of years, the position and geometry of continents and oceans is not stable, leading to first-order climatic variations. Particular attention has been paid to periods of continental mass consolidation in the form of supercontinents.