Johannes Pohlner


photo

 johannes.pohlner@unifr.ch
 +41 26 300 8928

Biography

 

  • since 2018: PhD student, University of Fribourg
  • 2012-2018: BSc and MSc studies, Heidelberg University

Research interests:

  • Igneous and metamorphic petrology
  • Stable isotope geochemistry (Fe, O)
  • Accessory mineral geochronology (baddeleyite, zircon)
  • Paleozoic tectonics (Peri-Gondwana realm and Variscan Orogeny)

Current research:

In my PhD project I focus on the Fe isotope systematics of eclogites and other high-pressure metamorphic rocks in the Münchberg Massif (Germany). Eclogites have experienced a complex history of igneous protolith formation, low-temperature alteration, high-pressure metamorphism in the subducting slab and retrogression. By applying various geochemical and petrologic methods, I try to identify which of these processes are most important for their Fe isotope composition. Further scopes of my project are geochemical cycling and inter-mineral Fe isotope fractionation during the subduction zone metamorphism.

Publications:

Pohlner, J. E., Schmitt, A. K., Chamberlain, K. R., Davies, J. H. F. L., Hildenbrand, A., Austermann, G. (2020): Multimethod U–Pb baddeleyite dating: insights from the Spread Eagle Intrusive Complex and Cape St. Mary's sills, Newfoundland, Canada. Geochronology 2, 187–208.