Dr. Dominik Sorger



Position: Research Associate in Metamorphic Petrology

Area of expertise: high-T metamorphism, thermodynamic modelling, garnet and monazite growth systematics, Variscan Orogeny



Research Interests

Metamorphic Petrology. I use several several state-of-the-art analytical and petrological techniques to create a comprehensive picture of the P–T–X–t history of metamorphic rocks. This includes various kinds of geothermobarometric calculations, thermodynamic modelling and monazite and zircon (Th–)U–Pb geochronology. A particular focus lies on the chemical zoning and mineral/melt inclusions of garnet porphyroblasts as well as on the formation of mineral reaction textures. Both can indicate a change in the metamorphic conditions and possibly also a change in the chemical system of the rock. I use various types of pseudosections (e.g. P–T, T–MO, T–MH2O) to model the effects of melt loss and element fractionation during the prograde and retrograde metamorphic evolution. These data then are used to give explicit implications for the tectonic evolution during orogenies and the processes of mineral growth and crustal melting during high-grade metamorphism. Another part of my research deals with the growth systematics of Th-U accessory phases in metamorphic and magmatic systems. Such accessory phases provide a big potential to investigate the trace element fractionation during crustal melting and melt crystallization, or the systematics of mineral formation in melt bearing systems, including thermodynamic and kinetic aspects.



Profile

since 10/2020: Wissenschaftlicher Mitarbeiter (Research Associate) at the Department of Mineralogy, University of Göttingen
07/2020 – 09/2020: Wissenschaftlicher Mitarbeiter (Research Associate) at the Department of Chemistry and Physics of Materials, University of Salzburg, AT
01/2020 – 06/2020: Microprobe Technician at the NAWI Graz Geocenter, University of Graz, AT
10/2016 – 06/2020: PhD studies in Geosciences at the NAWI Graz Geocenter, University of Graz, AT

PhD thesis: Metamorphic and tectonic evolution of the Drosendorf and Gföhl units – Lower Austria, Bohemian Massif

01/2013 – 10/2015: MSc studies in Earth Sciences at the University of Graz, AT

Master thesis: Petrology of low-pressure granulites and migmatites from the Bavarian Unit, Upper Austria

10/2009 – 01/2013: BSc studies in Earth Sciences at the University of Graz, AT

Bachelor thesis: Petrography and petrology of granulites from the Bohemian Massif, Upper Austria



Student education

My teaching at the Georg-August-University includes:

B.Geo.106, TM 2: Übung Polarisationsmikroskopie



Publications

Waitzinger, M., Sorger, D., Paar, W.H. & Finger, F. (2020). Geochronological constrains on uranium mineralization within the Hüttenberg siderite deposit (Eastern Alps, Austria). Geochemistry, 81: 125678. doi

Schorn, S., Diener, J.F.A., Sorger, D. & Clark, C. (2020). The contribution of charnockite magmatism to achieve near-ultrahigh temperatures in the Namaqua–Natal Metamorphic Province, South Africa. Lithos, 368–369, 105585. doi

Sorger, D., Hauzenberger, C.A., Finger, F. & Linner, M. (2020). Two generations of Variscan garnet: Implications from a petrochronological study of a high grade Avalonia-derived paragneiss from the Drosendorf unit, Bohemian Massif. Gondwana Reserach, 85, 234–148. doi

Skrzypek, E., Sakata, S. & Sorger, D. (2020). Alteration of magmatic monazite in granitoids from the Ryoke belt (SW Japan): processes and consequences. American Mineralogist, 105, 538–554. doi

Sorger, D., Hauzenberger, C.A., Linner, M., Iglseder, C. & Finger, F. (2018). Carboniferous Polymetamorphism Recorded in Paragneiss-Migmatites from the Bavarian Unit (Moldanubian Superunit, Upper Austria): Implications for the Tectonothermal Evolution at the End of the Variscan Orogeny. Journal of Petrology, 59, 1359–1382. doi