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M.Sc. Iris Wannhoff


Department of Earth Sciences

Institute of Geological Sciences

Tectonics and Sedimentary Systems

PhD Candidate

Malteserstr. 74-100
Room B 242
12249 Berlin


 since 11/2020

Doctoral candidate

Freie Universität Berlin, Germany

10/2017 - 09/2020

Master in Geosciences

  • Thesis title: “Melt inclusion investigation reveals first evidence of partial melting in giant garnets of Gore Mountain (Adirondacks, USA)”

Universität Potsdam, Germany

10/2014 - 09/2017

Bachelor in Geosciences

  • Thesis title: “Evidence for fluid-melt immiscibility during partial melting in the Oberpfalz migmatites, Moldanubian Zone (Bohemian Massif)"

Universität Potsdam, Germany

04/2019 - 06/2019

Internship about application of atom probe tomography

EBSD and FIB-SEM at Curtin University, Australia


Field Experience

  • Pic St. Loup, South France, 2 weeks
  • Varberg, Sweden, 2 weeks
  • Holsnøy, Norway, 2 weeks
  • Gore Mountain, USA, 5 days
  • Ivrea Zone, Italy, 1 week
  • Aeolian Islands, Italy 2 weeks
  • Koralpe and Saualpe, Austria, 4 weeks (more field work will follow)
  • Pohorje, Slovenia, 1 day (more field work will follow)
  • Corsica, France, 2 weeks
  • Harz, Germany, 5 days
  • Fichtelgebirge and Erzgebirge, 10 days
  • Vorder- and Hinterrhein, Switzerland, 5 days
  • Rhein Graben and Alp excursion, Germany and Switzerland, 7days

Current research

The investigation of a continent-derived alpine (U)HP nappe is crucial in order to reconstruct the evolution of the Alpine nappe through time until its present-time configuration. My research area is located in the Eastern Alps, Austria and Slovenia, comprising the Koralpe-Saualpe-Pohorje Complex. In order to investigate the nappe structure, the following methods will be applied during my PhD (RSQI, Zr-in-rutile, and Zr-in-titanite thermometry and thermodynamic modelling). Different lithologies will be investigated comprising mainly eclogite which forms lenses within metasediments. During this study a profile along the Koralpe-Saualpe-Pohorje Complex will be sampled and investigated in detail, in order to test if tectonic overpressure occurred along the profile towards SE which reflects the direction of subduction of the nappe. Furthermore, it will be tested if there are structurally controlled variations in peak pressures and if there are systematic differences in peak pressures between different lithologies.


Current Grants

My project is funded by the DFG within the 4D Mountain Building Process (MB4D) SPP project.

Peer-reviewed papers:


Wannhoff, I., Ferrero, S., Borghini, A., Darling, R., O’Brien, P. J. First evidence of dmisteinbergite (CaAl2Si2O8 polymorph) in high-grade metamorphic rocks. American Mineralogist (2022) 107 (12): 2315–2319. https://doi.org/10.2138/am-2022-8505


Ferrero, S., Wannhoff, I., Laurent, O., Yakymchuk, C., Darling, R., Wunder, B., Borghini, A., O'Brien, P. (2021): Embryos of TTGs in Gore Mountain garnet megacrysts from water-fluxed melting of the lower crust. Earth and Planetary Science Letters, 569, 117058. https://doi.org/10.1016/j.epsl.2021.117058

Kutzschbach, M., Wunder, B., Wannhoff, I., Wilke, F., Couffignal, F., Rocholl, A. (2021): Raman spectroscopic quantification of tetrahedral boron in synthetic aluminum-rich tourmaline. American Mineralogist, 106 (6), p. 872–882. https://doi.org/10.2138/am-2021-7758