A major research focus lies on the processes that formed the early continental crust with tonalitic-trondhjemitic-granodioritic (TTG) composition. This includes the identification of Earth’s early geodynamic processes, characterization of the mafic rocks that melted to produce TTGs and the investigation of the pressure/temperature conditions of partial melting.
In addition, we study mantle-derived basalts, komatiites and Archean peridotites to place constraints on crust-mantle recycling and incompatible element depletion in mantle contemporaneous with crust formation processes. We apply major, trace element and Hf-Nd-Os isotope as well as highly siderophile element (HSE) analyses. These methods are combined with thermodynamic and numerical modeling to better characterize the framework of early Earth’s mantle and crustal evolution.
- Elucidating Eoarchean geodynamic processes by multiple sulfur isotopes DFG (2018-2021) J.E. Hoffmann, E.M. Schwarzenbach, H. Strauß, C. Münker, M.T. Rosing, M.J. Whitehouse SPP1833.
- Geochemistry of Eoarchean mantle peridotites from southern West Greenland DFG (2012-2018) J.E. Hoffmann, C. Münker, J. van de Löcht, H. Becker, H., Rosing, M.T., R. Kleinschrodt.
- Granitoid – greenstone relationships in the eastern Kaapvaal craton and implications for the early crustal evolution DFG (2014-2017) J.E. Hoffmann, K.P. Schneider, M. Boyet, D. Roerdink SPP1833.
- Siderophile and chalcophile elements in the Archean mantle-crust system CSC (2012-2016) C. Li, H. Becker, Z. Wang , I. Puchtel, E. Scherer, P. Sprung.
- Early Archaean crust-formation processes – constraints from the Ancient Gneiss Complex (Swaziland) and the Itsaq Gneiss Complex (West Greenland) DFG (2012-2014) J.E. Hoffmann, A. Kröner, J.-H. Yang, E. Hegner, C. Münker, E. Musese, L. Iiacceri, A. Hofmann, T.J. Nagel.