Prof. Dr. Claudia Trepmann

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 rocks and minerals react on extreme loading rates
• Quantitative microfabric analysis using polarized light microscopy, scanning electron microscopy, transmission microscopy and related analytical techniques

Vergrößern

Rheology of rocks

Rheology of rocks is relevant for all topics dealing with material fluxes in the various spheres of our Earth. How rocks behave under stress 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)

Neuste Forschungsergebnisse: Trepmann, Claudia A.; 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)

Vergrößern

Fault rocks

Fault rocks represent the damage caused by 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.

Research projects

• 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., & 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

Vergrößern

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 shock loading and unloading 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.

Dellefant, Fabian; Seybold, Lina; C.A. Trepmann; Gilder, Stuart A.; Sleptsova, Iuliia V.; Hölzl, Stefan; Kaliwoda, Melanie (2024)Emplacement of shocked basement clasts during crater excavation in the Ries impact structureIn: International Journal of Earth Sciences. Bd. 113, S. 951-971 (Volltext vorhanden)

Vergrößern

Subduction zones

Subduction zones represent 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.

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

Claudia A. Trepmann; Seybold, Lina (2019)Deformation at low and high stress-loading ratesIn: Geoscience Frontiers. Bd. 10, Nr. 1: S. 43-54 (Volltext vorhanden)

Publikationsliste