Prof. Dr. Claudia Trepmann Geological deformation and transformation of rocks Department of Earth and Environmental Sciences Ludwig-Maximilians-University Munich

Research Publications Curriculum vitae Facilities Teaching The Team Contact Deutsch

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Research

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Deformation controlled by the seismic cycle Polarized light micrograph of shear band cleavage in mylonitic quartzite		Deformation and reaction BSE image of corona of apatite, allanite and epidote around monazite in pegmatitic mylonite.
Deformation processes in subduction zones Thin section of HP-metamorphic conglomerate.		Quantitative microfabric analysis EDS/EBSD-map of cataclastically deformed garnet
Rheology of minerals and rocks in the crust and upper mantle Polarized light micrograph of kink bands in olivine		Shock-effects TEM bright field image of quartz Brazil twins parallel to the basal plane.

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Publications

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1. Seybold, L., Dörr, W., Trepmann, C.A., Krahl, J., (2020). New constraints from U-Pb dating of detrital zircons on the paleogeographic origin of metasediments in the Talea Ori, central Crete. Geological Magazine. DOI: https://doi-org.emedien.ub.uni-muenchen.de/10.1017/S0016756819001365
2. Trepmann, C.A., Seybold, L. (2019). Deformation at low and high stress-loading rates. Geoscience Frontiers, https://doi.org/10.1016/j.gsf.2018.05.002.
3. Hentschel, F., Trepmann, C.A., Janots E., (2019) Deformation of feldspar at greenschist facies conditions – the record of mylonitic pegmatites from the Pfunderer Mountains, Eastern Alps. Solid Earth, https://doi.org/10.5194/se-2018-81
   
4. Seybold, L., Trepmann, C.A. (2019). A ductile extensional shear zone at the contact area between HP-LT metamorphic units in the Talea Ori, central Crete, Greece: deformation during early stages of exhumation from peak metamorphic conditions. International Journal of Earth Sciences, https://doi.org/10.1007/s00531-018-1650-6.
5. Janots E., Austrheim H., Spandler C., Hammerli, J., Trepmann C.A., Berndt J., Magnina V., Kemp A.I.S. (2018) Rare earth elements and Sm-Nd isotope redistribution in apatite and accessory minerals in retrogressed lower crust material (Bergen Arc, Norway). Chemical Geology, in press.
   
6. Chakraborty S., Mukhopadhyay D., Chowdhury P., Rubatto D., Anczkiewicz R., Trepmann C., Gaidies F., Sorcar N., Dasgupta S. (2017)  Channel Flow and Block tectonics in the Himalaya: Insights from petrological, structural, geochronological and geospeedometric studies in Sikkim, NE India.Lithos 282–283, 464–482.
   
7. Mukhopadhyay D., Chakraborty S, Trepmann C., Rubatto D., Anczkiewicz R., Gaidies F., Dasgupta S., Chowdhury P. (2017) The nature and evolution of the Main Central Thrust: Structural and geochronological constraints from the Sikkim Himalaya, NE India.Lithos 282–283, 447–463.
8. Trepmann C.A., Hsu C., Hentschel F., Döhler K., Schneider C., Wichmann V. (2017) Recrystallization of quartz after low-temperature plasticity - the record of stress relaxation below the seismogenic zone. Journal of Structural Geology. http://dx.doi.org/10.1016/j.jsg.2016.12.004.
9. Matysiak A., Trepmann C.A. (2015) The deformation record of olivine in mylonitic peridotites from the Finero Complex, Ivrea Zone – separate deformation cycles during exhumation. Tectonics 34, 2514–2533.
10. Trepmann C.A., Renner, J. Druiventak, A. (2013) Experimental deformation and recrystallization of olivine – processes and time scales of damage healing during postseismic relaxation at mantle depths. Solid Earth,  Solid Earth, 4, 423–450. pdf-file
11. Bial, J., Trepmann, C.A. (2013) The microstructural record of porphyroclasts and matrix of serpentinite mylonites - from brittle and crystal-plastic deformation to dissolution-precipitation creep. Solid Earth, Solid Earth 4, 315-330. pdf-file
12. Trepmann, C.A., Stöckhert B. (2013) Short-wavelength undulatory extinction in quartz recording coseismic deformation in the middle crust – an experimental study. Solid Earth, 4, 263–276. pdf-file
13. Koch, S.A., Pohl J., Gilder S.A., Trepmann, C. (2012) Geomagnetic field intensity re-corded after impact in the Ries meteorite crater, Germany. Geophysical Journal International, 189:383-390.
14. Matysiak, A.K., Trepmann, C.A. (2012) Crystal-plastic deformation and recrystallization of peridotite controlled by the seismic cycle. Tectonophysics, 530-531: 111-127.
15. Druiventak, A., Matysiak, A.K., Renner, J., Trepmann, C.A. (2012) Kick-and-cook experiments on peridotite: simulating coseismic deformation and postseismic creep. Terra Nova 24, 62-69
16. Druiventak, A., Trepmann, C.A., Renner, J. and Hanke, K. (2011) Low-temperature plasticity of olivine during high stress deformation of peridotite at lithospheric conditions – An experimental study. Earth Planet. Sci. Lett., 311, 199-211.
    
17. Wassmann S., Stöckhert B., Trepmann C.A. (2011). Dissolution precipitation creep versus crystalline plasticity in high pressure metamorphic serpentinites. Geol. Soc., London, Special Publ., 360, 129-149.
18. Kasioptasa,A., Geislera, T., Perdikouria, C., Trepmann, C.A., Gussonea, N., Putnis A. (2011) Polycrystalline apatite synthesized by hydrothermal replacement of calcium carbonates. Geochimical et cosmochimica acta, 75, 3486-3500.
    
19. Moghadam R. H., Trepmann C.A., Stöckhert B., Renner, J. (2010) Rheology of synthetic omphacite aggregates at high pressure and high temperature. Journal of Petrology 51: 921-945.
    
20. Trepmann C.A., Lenze A., Stöckhert B. (2010) Static recrystallization of vein quartz pebbles in a high pressure - low temperature metamorphic conglomerate. Journal of Structural Geology 32, 202-215.
21. Stöckhert B., Trepmann C.A., Massonne H.-J. (2009) Decripitation of UHP fluid inclusions in garnet - cause of diverse phase assemblages and indication of extreme decompression rates (Saxonian Erzgebirge, Germany). Journal of Metamorphic Geology, 27: 673-684.
22. Trepmann C.A. (2009) Shock effects and pre-shock microstructures in hydrothermal quartz veins from the Rochechouart impact structure, France. Journal of Structural Geology, 31 1183–1196.
23. Trepmann C.A., Stöckhert B. (2009) Microfabric of folded quartz veins in metagreywackes: dislocation creep and subgrain rotation at high stress. Journal of Metamorphic Geology 27: 555–570.
24. Trepmann C.A. (2008) Shock effects in quartz: compression versus shear deformation – an example from the Rochechouart impact structure, France. Earth and Planetary Science Letters 267: 322-332. doi:10.1016/j.epsl.2007.11.035.
25. Trepmann C.A., Stöckhert B., Dorner D., Küster M., Röller K., Moghadam R. H. (2007) Simulating coseismic deformation of quartz in the middle crust and fabric evolution during postseismic stress relaxation – an experimental study. Tectonophysics 442:83-104.
26. Orzol J., Stöckhert B., Trepmann C.A., Rummel F. (2006) Experimental deformation of synthetic wet jadeite aggregates. Journal of Geophysical Research 111: B06205, doi:10.1029/2005JB003706.
27. Trepmann C.A., Spray J.G. (2006) Shock-induced crystal-plastic deformation and post-shock annealing of quartz from crystalline target rocks of the Charlevoix Structure, Canada. European Journal of Mineralogy 18: 161-173.
28. Trepmann, C.A., Spray, J.G. (2005) Planar microstructures and Dauphiné twins in shocked quartz from the Charlevoix impact structure, Canada. in “Large Meteorite Impacts III”, T. Kenkmann, F. Hörz, A. Deutsch, eds. Geol. Soc. Am. Spec. Paper, 384: 315-328.
29. Trepmann, C.A., Götte, T, Spray, J.G. (2005) Impact-related Ca-metasomatism in crystalline target rocks from the Charlevoix structure, Canada. Can. Min. 43: 553-567.
30. Trepmann C.A., Stöckhert B., Chakraborty S. (2004) Oligocene trondhjemitic dikes in the Austroalpine basement of the Pfunderer Berge, Südtirol – level of emplacement and metamorphic overprint. European Journal of Mineralogy 16: 641-659.
31. Trepmann C.A., Stöckhert B. (2003) Quartz microstructures developed during non-steady state plastic flow at rapidly decaying stress and strain rate. Journal of Structural Geology, 25: 2035-2051.
32. Orzol J., Trepmann C.A., Stöckhert B., Shi, G. (2003) Critical shear stress for mechanical twinning of jadeite - an experimental study. Tectonophysics, 372: 135-145.
33. Trepmann C.A., Stöckhert B. (2002) Cataclastic deformation of garnet: A record of synseismic loading and postseismic creep. Journal of Structural Geology, 24: 1845-1856.
34. Stöckhert B., Duyster J., Trepmann C.A., Massonne H.-J. (2001) Microdiamond daughter crystals from supercritical COH + silicate fluids included in garnet, Erzgebirge, Germany. Geology, 29: 391-394.
35. Trepmann C.A., Stöckhert B. (2001) Mechanical twinning of jadeite - an indication of synseismic loading beneath the brittle-ductile transition. International Journal of Earth Sciences, 90: 4-13.nealing of quartz from crystalline target rocks of the Charlevoix Structure, Canada.

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Curriculum vitae

since 04/2011	Professor for geological deformation and transformation of rocks, Department of Earth and Environmental Sciences, Ludwig-Maimilians University Munich
10/13-09/19	Studiendekanin Fakultät für Geowissenschaften, Ludwig-Maimilians University Munich
01/08-03/11	Juniorprofessor for “Endogenous Geology – Materials Science of Rocks” at the Institute for Geology, Mineralogy and Geophysic at the Ruhr-Universität Bochum, Endogenous Geology
12/07- 07/04	Scientific assistant at the Institute for Geology, Mineralogy and Geophysic at the Ruhr-Universität Bochum, Endogenous Geology
06/04-07/02	DFG-research fellowship at the Department of Geology at the University of New Brunswick, Canada. Research topic: Respond of rocks on shock waves induced by meteorite-impacts: the microstructural record of rocks from the Charlevoix Structure, Quebec
05/02	Dr. rer. nat.  Institut für Geologie, Mineralogie und Geophysik, Ruhr-Universität Bochum
	PhD thesis: Microstructural Criteria for Synseismic Loading and Postseismic Creep - An Example From the Sesia Zone, Western Alps The microfabric of rocks from the Sesia Zone, Western Alps, has been investigated to gain insight into the processes of syn- and postseismic deformation in the uppermost plastosphere at major earthquakes in the overlying schizosphere. The microstructures imply non-steady state deformation at initially very high differential stresses (>0.5 GPa). Mechanical twinning of jadeite, cataclastic deformation of garnet, and low-temperature plasticity of quartz were followed by deformation dominated by dislocation creep of quartz.
06/02–08/99	Research assistant at the University of Bochum within the Collaborative Research Center  526:  Rheology of the Earth – from the upper crust to the subduction zone
01/98–07/99	Graduated assistant at the University of Bochum
12/97	Diploma Institut für Geologie, Mineralogie und Geophysik, Ruhr-Universität Bochum
	Diploma thesis:  Intrusion conditions of tonalitic to trondhjemitic dikes in the austroalpidic basement,  Pfunderer Bergen, Südtirol The intrusion conditions of tonalitic to trondhjemitic dikes in the austroalpidic basement were examined by chemical, petrographical and structural analysis with optical, electron microprobe and x-ray fluorescens techniques.
	Diploma mapping: Border area between Plattenkalk- and Phyllite-Quartzite-formation, Crete This work included detailed lithologic mapping, analysis of structures in field and optical microscopy of the microstructures of  the high-pressure rocks from the Talea Ori, northern Crete.
04/95–04/98	Practical training  at the company for geology and environmental engineering zu Höne, Klußmann, Altpeter AG, Bochum

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Facilities

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• Polarized light microscopy lab, A237, Luisenstr. 37, 80333 München
• Scanning electron microscope, including EBSD and EDX facilities, BU 133A, Theresienstraße 39, 80333 Munich, Tel. +49 (0) 89 2180 4102

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Teaching

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• Endogenous processes (BSc)
• Structural Geology (BSc)
• Microscopy (BSc, MSc)
• Deformation, rheolgy and tectonics (MSc)
  
• Field exercises and mapping courses (BSc, MSc)
• Electron microscopy (SEM, including EBSD and EDX techniques, TEM)
  

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The team

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Lisa Brückner PhD student Research: Transient deformation and long-lived shear zone activity Teaching: Polarized light microscopy (BSc)	A231, Luisenstr. 37, 80333 Munich Tel: +49 (0) 89 / 2180-6524 E-mail: Lisa.Brueckner@lmu.de
Fabian Dellefant PhD student Research: Magnetic properties and microfabrics of shocked minerals and their influence on the magnetic anomalies in the Ries, Vredefort and Manicouagan impact structures	A231, Luisenstr. 37, 80333 Munich Tel: +49 (0) 89 / 2180-6524 E-mail: Fabian.Dellefant@lmu.de
Felix Hentschel PhD student Research: Deformation behaviour of feldspar in greenschist facies granitoide shear zones Teaching: Polarized light microscopy (BSc)	A231, Luisenstr. 37, 80333 Munich Tel: +49 (0) 89 / 2180-6524 E-mail: Felix.Hentschel@lmu.de
Dr. Lina Seybold  (2019) Research: The geological record of the lowermost tectonic unit of the Cretan nappe pile in the Talea Ori, Crete, Greece - the deformation history during burial and exhumation Teaching: Polarized light microscopy (BSc)	A231, Luisenstr. 37, 80333 Munich Tel: +49 (0) 89 / 2180-6524 E-mail: Lina.Seybold@lmu.de

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Master students J. Considene: The relationship between mylonitic deformation and pseudotachylyte-formation in fault rocks from the base of the Silvretta nappe, Eastern Alps E. Prince: Microfabric development of shear zone eclogites from the Western Gneiss Region, Norway

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Former PhD students

• A. Druiventak: Experimental high-stress deformation and annealing of peridotite - simulating coseismic deformation and postseismic creep (PhD 2012)
• A. Matysiak: Microfabric development in peridotites during deformation controlled by the seismic cycle (PhD 2012)

Former Master students

• C. Mertens: High-grade deformation of orthopyroxene – microfabric in gneisses from Gjelsvikfjella, Antarctica (2020)
  
• T. Alatrach: Shear band cleavage in a quartz-rich mylonite from the Defereggen-Antholz-Vals (DAV) shear zone in the Eastern Alps (2019)
• J. van Lier: Faults and fault rocks at the Southern border of the Talea Ori, Crete (2017)
  
• C. Hsu: Recrystallization of deformed quartz - dynamic recrystallization versus nucleation and growth (2016)
  
• C. Peinelt: Monozite and other accessory minerals in HP-LT metamorphic rocks of the Talea Ori, Crete (2016)
  
• V. Wichmann: Fault rocks of the Silvretta basal thrust zone, Switzerland (2015)
  
• F. Hentschel: Deformation and reactions in mylonitic pegmatites in the Eastern Alps south of the Tauern window and west of the Tauferer valley  (2014)
  
• R. Gutknecht: The lowermost unit of the Cretan nappe pile in the Talea Ori, Greece (2014)
  
• Ch. Schneider: Pseudotachylytes at the base of the Silvretta nappe, Eastern Alps (2013)
  
• K. Döhler: Deformation related to the DAV fault system in the Eastern Alps south of the Tauern window and west of the Tauferer valley (2012)
  
• A. Rogowitz: Deformed coronitic eclogites from the Sunnfjord area, Western Gneiss Region, Norway (2011)
• V. Helpa: Deformation history of dunites from the peridotite complex at Almklovdalen, Norway (2010)
  
• J. Dröger: Recrystallization of shocked quartz from the Vredefort impact structure, South Africa (2010)
  
• J. Bial: Microfabric development in serpentinite mylonites from the Erro-Tobbio unit of the Voltri massif, Italy (2010)
• P. Jakschik: Pseudotachylytes at the base of the Silvretta Nappe, Eastern Alps (2010)
  

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Contact

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Prof. Dr. Claudia Trepmann Geological deformation and transformation of rocks Department of Earth and Environmental Sciences Ludwig-Maximilians-Universität Munich Luisenstr. 37 80333 Munich Raum A247 (2.Stock) Tel: +49 (0) 89 / 2180-6544 Fax: +49 (0) 89 / 2180-6514 E-mail: Claudia.Trepmann@lmu.de