My research interests from the mineralogical side lie in the planetary water cycle to understand and explain emergent constitutive laws in the multi-scale evolution from point defects, dislocations and ...

...two-dimensional defects to plate tectonic scales. This is an arduous challenge in condensed matter physics. The Earth appears to be the only planet known to have developed stable plate tectonics as a means to get rid of its heat. The emergence of plate tectonics out of mantle convection appears to rely intrinsically on the capacity to form extremely weak faults in the top 100 km of the planet. These faults have a memory of at least several hundred millions of years, yet they appear to rely on the effects of water on line defects. This important phenomenon was first discovered in laboratory and dubbed „hydrolytic weakening“. At the large scale it explains cycles of co-located resurgence of plate generation and consumption (the Wilson cycle), but the exact physics of the underlying process itself and the enormous spanning of scales still remains unclear. I extend an approach in which localization of incompatible phases appear to reside on the grain boundaries of the mantle mineral olivine. I focus, however, only on the volatile phase CO2 and H2O.