Dear all, I am pleased to advertise a PhD position at the University of Bern starting in the first half of 2024. The PhD position is a part of the Ambizione project, "*Quantifying redox reactions in the subducting slab: Insights from in situ analysis of Fe, C, and S in high-pressure metamorphic rocks*," awarded by the Swiss National Science Foundation. The student will be co-advised by myself and Prof. Jörg Hermann. In this project, the PhD student will measure the oxidation states of Fe, C, and S in rocks from western Norway to elucidate what redox reactions may occur between these elements during continental subduction to ultrahigh pressure conditions. The project will involve wet chemical, in situ lab and synchrotron based microanalysis, and thermodynamic modeling. Fieldwork is planned for summer of 2024. *Applications will be evaluated starting on the 1st of December, 2023*, and evaluation will continue until the position is filled. Please see the attached advertisement for additional information. Sincerely, -Jesse Walters -- Jesse B. Walters <https://geojesse.weebly.com> Postdoctoral Researcher Institut für Geowissenschaften Goethe Universität