# Prof. Dr. Claudia Trepmann

**Source**: https://www.geo.lmu.de/en/faculty-for-geosciences/persons/contact-page/claudia-trepmann-5d707a5c.html
**Parent**: https://www.geo.lmu.de/en/deans-office/

Professor of Geological Deformation and Transformation of Rocks

Dean

**Office address:**

Luisenstraße 37

Room A 247

80333
Munich

[Room finder](https://www.lmu.de/raumfinder/#/building/bw1120/map?room=112002307_)

[Send an email](mailto:Claudia.Trepmann@lmu.de)

[+49 89 2180 6544](tel:+498921806544)

[Lehrveranstaltungen (LSF)](https://lsf.verwaltung.uni-muenchen.de/qisserver/rds?state=verpublish&status=init&vmfile=no&moduleCall=webInfo&publishConfFile=webInfoPerson&publishSubDir=personal&keep=y&purge=y&personal.pid=62831 "Link opens in a new window")

[Themen für Abschlussarbeiten](https://www.geo.lmu.de/geoumwelt/en/studies/bachelors-and-masters-projects/)

**Office hours:**

Thursday 12:00-14.00\
\

## 

[CV](#accordionItem-null-0)

[CV Claudia Trepmann (PDF, 126 KB)](https://cms-cdn.lmu.de/media/20-geowissenschaften/department-geoumwelt/downloads/cvs/cv_trepmann-claudia-2025.pdf "PDF-Link opens in a new window")\

[Roles](#accordionItem-null-1)

- Dean of the Faculty of Geosciences, LMU
- Member of DGGV Board (2025-2027)
- Sprecherin der Konferenz der Fachbereiche Geowissenschaften (KFGeo, since 2022)

## Research Interests

- Episodic deformation at transient stress conditions at and below hypocentral depths and the implications on the rheology of the lithosphere
- Interplay between deformation and mineral reactions
- Deformation and mineral reactions in subduction zones and the implications on the burial and exhumation processes
- Impact geology: shock effects and how do rocks and minerals react on extreme loading rates
- Quantitative microfabric analysis using polarized light microscopy, scanning electron microscopy, transmission microscopy and related analytical techniques

Enlarge

Polarized light micrograph (crossed polarizers, compensator plate) of mylonitic pegmatite, Austroalpine basement, image width ≈ 3 mmm | © Claudia Trepmann

### Rheology of rocks

Rheology of rocksis relevant for all topics dealing with material fluxes in the various spheres of our Earth. How rocks behave under external stresses governs for example plate tectonics, earthquakes, volcanism and convection in the Earth’s interior. We use experimentally deformed rocks in comparison to the natural deformation record to evaluate the rheology of rocks.

**Research projects**

- High stress crystal plasticity of carbonates - episodic deformation at transient stresses. PIs: Claudia Trepmann, Elena Sturm.
- [Identification, targeted extraction and origin of magnetic micro- and nanoparticles in urban particulate matter. (DFG)](https://lmu.e-spirit.hosting/fs5webedit/preview/642608/site/DE/current/642617/2872132#st_definition_list__master_40 "Link opens in a new window")

**Neuste Forschungsergebnisse:** [Claudia A. Trepmann](https://lmu.e-spirit.hosting/fs5webedit/preview/642608/site/DE/current/642617/2680314/contentId=11072 "Link opens in a new window"); Beiers, Lisa M.; Dellefant, Fabian (2026)High-stress crystal plasticity of titanite and other minerals recording coseismic off-fault damage in strike-slip and thrust tectonic settingsIn: Earth and Planetary Science Letters. Bd. 674, 119741 (Volltext vorhanden)

Enlarge

Field image of Silvretta-pseudotachylyte

### Fault rocks

Fault rocks represent the damage involved during faulting. They carry valuable information on the grain-scale deformation processes and conditions also at depths in the Earth’s crust that are not accessible by any other technique. We use field geology and state-of-the-art microfabric analysis in combination with experiments to analyze the deformation record of fault rocks. An understanding on the processes at depth is required to understand how earthquakes develop, which might help to better deal with the natural hazard of earthquakes.

**R****esearch project****s**

- The Itapetim and Tendó shear zones (Eastern Brazil) in cooperation with Gustavo Viegas (University of Brasília, Brasília, Brazil) and Rhander Taufner (University of São Paulo, São Paulo, Brazil)
- High stress crystal plasticity of carbonates - episodic deformation at transient stresses. PIs: Claudia Trepmann, Elena Sturm.

**Neuste Forschungsergebnisse:** Brückner, L. M., [Trepmann, C. A.](https://lmu.e-spirit.hosting/fs5webedit/preview/642608/site/DE/current/642617/2680314/contentId=11072 "Link opens in a new window"), & Kaliwoda, M. (2023). Rheology dependent on the distance to the propagating thrust tip—(ultra-)mylonites and pseudotachylytes of the Silvretta basal thrust. *Tectonics*, 42, e2023TC008010. [https://doi.org/10.1029/2023TC008010](https://doi.org/10.1029/2023TC008010 "Link opens in a new window")

Enlarge

TEM bright field micrograph showing Brazil twins in shocked quartz, Rochechouart impact structure, France (image width ca. 3 µm) | © Claudia Trepmann

### **Impact cratering and shock effects**

Impact cratering is a fundamental geological process shaping the surface of planetary bodies. Shock effects are microstructures that form upon the impact of asteroids in the target rocks. They provide unique information on the highly dynamic processes and conditions during impact cratering. Impact craters represent valuable natural laboratories to understand processe

**Research project:** Formation and deposition of suevites.

[C.A. Trepmann](https://lmu.e-spirit.hosting/fs5webedit/preview/642608/site/DE/current/642617/2680314/contentId=11072 "Link opens in a new window") (2008): Shock effects in quartz: Compression versus shear deformation — An example from the Rochechouart impact structure, France. Earth and Planetary Science Letters, Volume 267, Issues 1–2, 1 March 2008, Pages 322-332, [https://doi.org/10.1016/j.epsl.2007.11.035](https://doi.org/10.1016/j.epsl.2007.11.035 "Link opens in a new window")

Enlarge

EBSD-map of inclusions of coesite (Coe, high-pressure polymorph of SiO2) in pyrope (Prp, Mg-rich garnet), partly back-transformed to quartz(Qz) indicating ultra-high-pressure metamorphism. | © Claudia Trepmann

### **Subduction zones**

Subduction zonesrepresent first order geological structures in plate tectonics. My special interest are the deformation and transformation of rocks at conditions during subduction zone metamorphism and the influence on the material flow in the Earth’s interior. What are the stresses in subduction zones, how are subduction zone earthquakes generated, how are rocks exhumed from depth of ≥100 km in geologically very fast time scales? These and similar questions are addressed by reading the geological record of metamorphic rocks that were exhumed from the subduction channel.

**R****esearch project:** High stress crystal plasticity of carbonates - episodic deformation at transient stresses. PIs: Claudia Trepmann, Elena Sturm (DFG proposal).

Sara Wassmann, Bernhard Stöckhert, [Claudia A. Trepmann,](https://lmu.e-spirit.hosting/fs5webedit/preview/642608/site/DE/current/642617/2680314/contentId=11072 "Link opens in a new window") 2011. "Dissolution precipitation creep versus crystalline plasticity in high-pressure metamorphic serpentinites", Deformation Mechanisms, Rheology and Tectonics: Microstructures, Mechanics and Anisotropy, David J. Prior, Ernest H. Rutter, Daniel J. Tatham **DOI:**[https://doi.org/10.1144/SP360.8](https://www.google.com/search?q=https://doi.org/10.1144/SP360.8&authuser=1 "Link opens in a new window")

## Publications