The Team
Almeev, Renat (Ph.D. Moscow, 2005)
Room: 151 (Building 2501)
Tel.: +49 (0) 511 762-2443
r.almeev(@)mineralogie.uni-hannover.de
Magma origin and evolution. Experimental petrology of igneous rocks, the role of P-T-fO2-aH2O conditions on phase equilibria in basaltic to rhyolitic magmas. Thermodynamics of mineral-melt and fluid-melt equilibria. Melt inclusions. Development of new analytical methods using electron microprobe.
Chakraborty, Sumit (Ph.D. Arizona, 1990)
Room: IA 4/117
Tel.: +49 (0) 234 32-24395
sumit.chakraborty(@)rub.de
Experiments, theory and field studies to understand timescales and mechanisms of geochemical and cosmochemical processes. Atomistic mechanisms of flow and creep. Diffusion controlled processes in Materials Science problems.
Dias, Maria (M.Sc. Lisbon, 2020)
Room: IA 4/105
Tel.: +49 (0) 234 32-23517
maria.dias(@)rub.de
PhD-student. Determination of diffusion coefficients for Fe-Mg and trace elements in orthopyroxene as a function of various relevant parameters (T, fO2, fH2O and major and minor element composition) for use in diffusion chronometry.
Dohmen, Ralf (Ph.D. Cologne, 1999)
Ruhr-Universität Bochum
Room: IA 4/113
Tel.: +49 (0) 234 32-24394
ralf.dohmen(@)rub.de
Experimental and theoretical petrology. My research interest covers various different topics within theoretical and experimental petrology where diffusion or diffusion-controlled processes are involved. It comprises theoretical modeling as well as experiments to understand and quantify the reaction kinetics of multi-phase systems or simply to measure diffusion coefficients for various applications, e.g., mineral rheology or diffusion chronometry.
Holtz, Francois (Ph.D. Nancy, 1987)
Room: 152 (Building 2501)
Tel.: +49 (0) 511 762-5281
f.holtz(@)mineralogie.uni-hannover.de
High pressure and high temperature experiments, chemical properties of magmatic systems. Field studies, experimental simulation and modelling to understand melting processes in the Earth crust, the formation of high temperature ore deposits, crystallization conditions of magmas, volcanic systems and processes in magma reservoirs.
Kundin, Julia (Ph.D. Moscow, 2002)
Room: IC 02-703
Tel.: +49 (0) 234 32-29376
julia.kundin(@)rub.de
Research Group Leader at Interdisciplinary Centre for Advanced Materials Simulation (ICAMS)
Group: Diffusion in Metals and Minerals
Department of Scale-Bridging Thermodynamic and Kinetic Simulation
Development and application of a new generation of simulation tools for multi-scale materials modelling
Marxer, Felix (Ph.D. ETH Zurich, 2021)
Room: 141 (Building 2501)
Tel.: +49 (0) 511 762-5280
f.marxer(@)mineralogie.uni-hannover.de
I am an experimental petrologist working currently as a postdoc at the University of Hannover. My research interests span a wide range of topics in igneous petrology but focus on magmatic phase equilibria and magma differentiation processes.
Oeser-Rabe, Martin (Ph.D. Hannover, 2015)
Room: 217 (Building 2511)
Tel.: +49 (0) 511 762-8970
m.oeser(@)mineralogie.uni-hannover.de
Investigation of stable isotope fractionation to trace and understand diffusion processes in magmatic systems; in-situ analyses by laser ablation-ICP-MS; investigation of trace element variations in magmatic minerals.
Pahl, Julian (M.Sc. Bochum, 2023)
Research Asssitant – My first reaearch steps and interest focus on the petrological characterisation of the 2021 Tajogaite eruption of the Cumbre Vieja, La Palma (Spain) including the application of diffusion chronometry. I also manage the website of the ‚Diffusion Chronometry of Magmatic Systems‘ project. If you see any mistakes or noticeable problems regarding the website, please contact me.
Pogorelov, Evgeny (Ph.D. Moscow, 2000)
Room: IA 4/103
Tel.: +49 (0) 234 32-23513
evgeny.pogorelov(@)rub.de
Researcher, Chemical differentiation, cold storage and remobilization of magma, computer modeling.
Pohl, Florian (M.Sc. Hannover, 2019)
Room: 138 (Building 2501)
Tel.: +49 (0) 511 762-5517
f.pohl(@)mineralogie.uni-hannover.de
Determination of diffusion coefficients for NaSi-CaAl interdiffusion and its coupling with minor and trace element diffusion rates in plagioclase by doing diffusion couple experiments with varying parameters (temperature, time, pressure, water fugacity, oxygen fugacity and An-content). Experience in working with internally heated pressure vessels, infrared spectroscopy, raman spectroscopy and impedance spectroscopy.
Sobolewski, Linda (Ph.D. Bochum, 2023)
Ruhr-Universitaet Bochum
Room: IA 4/109
Tel.: +49 (0) 234 32-24393
linda.sobolewski(@)rub.de
My research interest is focused on the investigation of volcano-ice interactions and the study of glaciovolcanic cave systems. For my Ph.D. thesis I am currently researching the glaciovolcanic cave systems in the crater of Mount St. Helens (USA). I am interested in understanding subglacial processes and the role of cave systems to better understand the characteristics of glacier-mantled volcanoes. I have been working as the scientific coordinator in this Research Unit since May 2021.
Steinbach, Ingo (Ph.D. Aachen)
Room: IC 02/509
Tel.: +49 (0) 234 32-29315
ingo.steinbach(@)rub.de
Interdisciplinary Centre for Advanced Materials Simulations (ICAMS)
Research Interests:Microstructure evolution and phase transitions
Thermodynamics in and at interfaces
Phase-field theory
Numerics of free boundary problems
Weyer, Stefan (Ph.D. Muenster, 2001)
Room: 221 (Building 2511)
Tel.: +49 (0) 511 762-2933
s.weyer(@)mineralogie.uni-hannover.de
The focus of the Geochemistry Group is the development of new analytical protocols for the analysis of „non-traditional isotope systems“ and their application in a variety of different fields in Earth sciences. Our fields of research include the origin and differentiation of the Earth and other terrestrial planets, the evolution of the early Earth, diffusional isotope fractionation and time scales of magmatic processes.
Former Members
Behrens, Harald (Ph.D. Hannover, 1988)
Room: 142 (Building 2501)
Tel.: +49 (0) 511 762-8054
h.behrens(@)mineralogie.uni-hannover.de
Major interest of HB is on kinetic and thermodynamic properties of materials relevant for geosciences and glass sciences. Experimental studies on diffusion in crystal and melts has been in the focus since several decades. In addition, development and application of analytical and spectroscopic tools for in situ studies at high temperature and pressure is a central issue in his research.
deGraffenried, Rebecca (Ph.D. Hawaii, 2021)
Room: IA 4/105
Tel.: +49 (0) 234 32-23517
rebecca.degraffenried(@)rub.de
My main focus is on volcanic processes, both in the shallow subsurface and on the surface. In particular, I examine the process of magma degassing and decompression using experiments and numerical modeling. I have also worked on basaltic lava flow dynamics and characterization of phreatomagmatic eruption deposits. I will be expanding my research of igneous systems to modeling chemical equilibration and diffusion in magma bodies.
Eschenauer, Julius
Ruhr-Universität Bochum
Julius.Eschenauer@ruhr-uni-bochum.de
Julius joined our Pulsed Layer Deposition (PLD) lab in the spring of 2021, where he polishes single crystals and coats them with thin films of any material for subsequent diffusion studies.
Faak, Kathrin (Ph.D. Bochum, 2012)
Room: IA 4/179
Tel.: +49 (0) 234 32-23228
Kathrin.Faak(@)rub.de
My research interest is focused on the determination of timescales for cooling of magmatic systems. I combine different methods of diffusion chronometry with experimental investigation of phase equilibria, thermal modelling and fieldwork to constrain cooling histories of natural rocks from different igneous systems. I am particularly interested in understanding igneous, metamorphic and geodynamic processes involved in the formation of oceanic crust, as well as in the formation of layered intrusions.
Jojevic, Nikola (Vocational training certificate as graphic designer, Gelsenkirchen, 2021)
Room: IA 4/109
Tel.: +49 (0) 234 32-24393
nikola.jojevic(@)rub.de
Kirchenbaur, Maria (Ph.D. Cologne, 2012)
Room: IA 5/177
Tel.: Tel.: +49 (0) 234 32-27768
maria.kirchenbaur(@)ruhr-uni-bochum.de.de
Formation and destruction of oceanic and continental crust by field studies and geochemical analyses using elemental proxies as well as stable and radiogenic isotope systems.
Koepke, Jürgen (Ph.D. Braunschweig, 1986)
Room: 143 (Building 2501)
Tel.: +49 (0) 511 762-4084
koepke(@)mineralogie.uni-hannover.de
My research focuses on the geodynamics of mid-ocean ridges, especially on the magmatic processes at the interface between igneous and hydrothermal processes and the role of water during construction of the ocean crust. For this, I’m performing ship expeditions to mid-ocean ridges of modern oceans, and field studies on ophiolites, especially in the Oman ophiolite, the best example for ancient oceanic lithosphere on land. I’m using petrographic, petrological and geochemical methods applied to natural gabbros and basalts from recent oceans and ophiolites, as well as experimental petrology applied to basalts and gabbros, with focus on the role of aH2O on phase equilibria.