Contrasted effects of water

In this work, the hypothesis of surface-erosion controlled plate tectonics is illustrated by decreasing the effective frictional strength of the oceanic lithosphere and mantle materials to coincide with the emergence of continents and major glaciations. Then, a systematic parameter study is conducted to examine the effect of water-dependent density, water-dependent viscosity, sediment-aided lubrication, and initial mantle potential temperature on the thermochemical evolution of Earth.

Learn more

Influence of composite rheology

In this work, the influence of composite rheology on Earth's mantle and lithosphere dynamics is investigated using 2D global-scale compressible convection models. Following that, a parameter study is conducted to examine the influence of domain size, melting, and friction coefficient on the thermochemical evolution of Earth.

Learn more

Roots of continents

In this study, we explored the formation of strong, dehydrated, buoyant, and stable continental roots as a result of naturally occurring different tectonic processes. We incorporated solubility maps to control water ingassing/outgassing and implemented the evolution of magnesium number (Mg#) to get low-density residue after melting.

Learn more

Primordial Continental Crust Generation

While the formation of present-day continental crust is largely understood, the genesis of primoridal crust (Archean TTG rocks) and the onset of plate tectonics remain enigmatic. In this project, we implemented a melting parametrisation to create primordial crust self-consistently within a global and evolutionary thermochemical mantle convection model.

Learn more

Subcontinental mantle warming

In this project, we developed new tools to quantify the time-dependent correlation between continents and the subcontinental mantle temperatures and applied them to a range of incompressible and compressible thermochemical convection models. Furthermore, we investigated the possible origin of continental flood basalts.

Learn more

Magmatism during early Earth

The relative importance of plutonism and volcanism towards generating primordial continental crust is investigated with the aid of global thermochemical mantle convection models. We observed that intrusion-dominated magmatism results in hotter geotherms and the production of various Archean TTG rocks as reported from geological data.

Learn more