Prof. Dr. Stefan Jung

[Stefan Jung] Mineralogisch-Petrographisches Institut
Universität Hamburg
Grindelallee 48
20146 Hamburg
Tel:  (+49 40) 42838-2061
Fax:  (+49 40) 42838-2422
E-Mail:  stefan.jung@mineralogie.uni-hamburg.de
 

Prof. Jung´s research involves applications of geochemistry, geochronology, and petrology designed to understand and quantify the rates and timescales of geological processes affecting the evolution of the Earth's crust and mantle. Interests include high-temperature processes in varied geological environments, the rates and geochemical consequences of mass transport in the evolving crust, the timing and duration of mountain building and metamorphism in collisional environments, and the development of new methodologies to better apply and interpret geochronological data (using the U/Pb, Sm/Nd, Rb/Sr, Lu/Hf, or Re/Os isotopic systems) in studies of crustal and mantle evolution. Prof. Jungs research includes both field and laboratory based analysis. Areas of research include mainly the Proterozoic Damara and Kaoko orogens of Namibia, the Proterozoic Ribeira Belt in Brazil, the Tertiary volcanic fields in central Europe (Rhön, Vogelsberg, Hocheifel, Siebengebirge) and the Alpine Mountain chain. Additional work is done in the Archaean Gneiss complex of Swaziland, the Proterozoic Mavuradonha of Zimbabwe and the Palaeozoic migmatite terrain of Sardinia.

 
Selected publications:
S. Jung, K. Mezger, P. Masberg, E. Hoffer & S. Hoernes. 1998. Petrology of an intrusion-related high-grade migmatite: implications for partial melting of metasedimentary rocks and leucosome-forming processes. Journal of metamorphic Geology 16, 425-445.

S. Jung, K. Mezger & S. Hoernes. 1998. Petrology and Geochemistry of post-collisional metaluminous A-type granites - A major and trace element and Nd-Sr-Pb-O-isotope study from the Proterozoic Damara Belt, Namibia. Lithos 45, 147-175.

S. Jung & P. Masberg. 1998. Major- and trace element systematics and isotope geochemistry of Cenozoic mafic volcanic rocks from the Vogelsberg (Central Germany) - Constraints on the origin of continental alkaline and tholeiitic basalts and their mantle sources. Journal of Volcanology and Geothermal Research 86, 151-177.

S. Jung, S. Hoernes, P. Masberg & E. Hoffer. 1999. The petrogenesis of some migmatites and granites (Central Damara Orogen, Namibia): Evidence for disequilibrium melting, wall rock contamination and crystal fractionation. Journal of Petrology 40, 1241-1269.

S. Jung & S. Hoernes. 2000. The major- and trace element and isotope (Sr, Nd, O) geochemistry of Cenozoic alkaline rift-type volcanic rocks from the Rhön area (central Germany): Petrology, mantle source characteristics and implications for asthenosphere-lithosphere interactions. Journal of Volcanology and Geothermal Research 99, 27-53.

S. Jung & K. Mezger. 2001. Geochronology in migmatites - A Sm-Nd, U-Pb and Rb-Sr study from the Proterozoic Damara belt (Namibia) and implications for polyphase development of migmatites in high-grade terranes. Journal of metamorphic Geology 19, 77-79.

S. Jung, K. Mezger & S. Hoernes. 2002. Synorogenic melting of mafic lower crust: Constraints from geochronology, petrology and Sr, Nd, Pb, O isotope geochemistry of quartz diorites (Damara orogen, Namibia). Contributions to Mineralogy and Petrology 143, 551-566.

S. Jung & K. Mezger. 2003. Petrology of basement-dominated terranes: I. Regionalmetamorphic P-T-t path from U-Pb monazite and Sm-Nd garnet geochronology (Central Damara orogen, Namibia). Chemical Geology 198, 223-247.

S. Jung, S. Hoernes & K. Mezger. 2003. Petrology of basement-dominated terranes: II. Contrasting isotopic (Sr, Nd, Pb, and O) signatures of basement-derived granites and constraints on the source region of granite (Damara orogen, Namibia) Chemical Geology 199, 1-28.

S. Jung & K. Mezger. 2003. U-Pb garnet chronometry in high-grade rocks - Case studies from the central Damara orogen (Namibia) and implications for the interpretation of Sm-Nd garnet ages and the role of high U-Th inclusions. Contributions to Mineralogy and Petrology 146, 382-396.

S. Jung, K. Mezger & S. Hoernes. 2004. Shear zone-related syenites in the Damara Belt (Namibia): The role of crustal contamination and source composition. Contributions to Mineralogy and Petrology 148, 104-121.

S. Jung. 2005. Isotopic equilibrium/disequilibrium in granites, metasedimentary rocks and migmatites (Damara orogen, Namibia) - a consequence of polymetamorphism and melting. Lithos 84, 168-184.

S. Jung, S. Hoernes & E. Hoffer. 2005. Petrogenesis of cogenetic nepheline and quartz syenites and granites (Northern Damara orogen, Namibia) - enriched mantle vs. crustal contamination Journal of Geology 113, 651-672.

S. Jung, J.A. Pfänder, G. Brügmann & A. Stracke. 2005. Sources of primitive alkaline volcanic rocks from the central European Volcanic province (Rhön, Germany) inferred from Hf, Pb and Os isotopes. Contributions to Mineralogy and Petrology 150, 546-559.

S. Jung & E. Hellebrand. 2006. Trace element fractionation during high-grade metamorphism and crustal melting - constraints from ion microprobe data of metapelitic, migmatitic and igneous garnets and implications for Sm-Nd garnet geochronology Lithos 87, 193-213.

C. Jung, S. Jung, E. Hoffer & J. Berndt. 2006. Petrogenesis of Tertiary mafic alkaline magmas from the Hocheifel, Germany. Journal of Petrology 47, 1637-1671.

S. Jung & E. Hellebrand. 2007. Textural, geochronological and chemical constraints from polygenetic titanite and monogenetic apatite from a mid-crustal shear zone: an integrated EPMA, SIMS, and TIMS study. Chemical Geology 241, 88-107.