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Projects

Mineral surfaces as hotspots for microbes and element cycling in the Biodiversity Exploratories (BEmins)

 

Supervisor:

Marion Schrumpf (Max-Planck-Institut für Biogeochemie), Ellen Kandeler (Universität Hohenheim), Klaus Kaiser, Robert Mikutta (Martin-Luther-Universität Halle-Wittenberg), Christian Mikutta (Leibniz Universität Hannover)

Researcher:

N.N.

Duration:

2020-2023

Funded by:

DFG

 

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Formation of Fe-Ti oxide ore deposits associated with flood basalts: A case study on Emeishan Large igneous Province, China

 

Supervisor:

Prof. Dr. Tong Hou

Researcher:

eigene Stelle

Duration:

2020-2023

Funded by:

Humboldt foundation

 

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Amphibole: a mineral to unravel magma storage and timescales of sub-volcanic processes and eruptions

 

Supervisor:

Dr. Filippo Ridolfi

Researcher:

eigene Stelle

Duration:

2019-2021

Funded by:

DFG

 

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New insights into the interplay between water diffusion and viscosity in magma fragmentation

 

Supervisor:

Prof. Dr. Harald Behrens

Researcher:

M. Sc. Florian Pohl

Duration:

2019-2020

Funded by:

DFG

 

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Magmatic volatiles and ore metals released from intraoceanic arc magmas: constraints from high pressure experiments and melt inclusions for Brothers volcano, Kermadec arc

 

Supervisor:

Prof. Dr. Francois Holtz

Researcher:

M. Sc. Philipp Beckmann

Duration:

2020-2023

Funded by:

DFG

 

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Natural organic matter control on silicate interactions with iron oxides and silicon phytoavailability

 

Supervisor:

Robert Mikutta, Anika Klotzbücher, Thimo Klotzbücher, Klaus Kaiser (Martin-Luther-Universität Halle-Wittenberg), Christian Mikutta (Leibniz Universität Hannover

Researcher:

Jana Dobritzsch

Duration:

2019-2022

Funded by:

DFG

 

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Molecular-scale mechanisms of antimony binding to soil organic matter

 

Supervisor:

Prof. Dr. Christian Mikutta

Researcher:

M. Sc. Sascha Wilke

Duration:

2019-2022

Funded by:

DFG

 

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Effects of redox oscillations on soil clay mineralogy and colloid dynamics

 

Supervisor:

Prof. Dr. Christian Mikutta , Dr. Reiner Dohrmann (Bundesanstalt für Geowissenschaften und Rohstoffe)

Researcher:

M. Sc. Max Niegisch

Duration:

2019-2022

Funded by:

DFG

 

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Formation and properties of mineral-organic soil interfaces as revealed by X-ray photoelectron spectroscopy

 

Supervisor:

Robert Mikutta, Thimo Klotzbücher, Klaus Kaiser (Martin-Luther-Universität Halle-Wittenberg), Christian Mikutta (Leibniz Universität Hannover)

Researcher:

Thimo Klotzbücher

Duration:

2019-2022

Funded by:

DFG

 

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Interactions between manganese oxides and dissolved organic matter in soil

 

Supervisor:

Prof. Dr. Christian Mikutta, Dr. Ricarda Behrens (Leibniz Universität Hannover), Robert Mikutta, Klaus Kaiser (Martin-Luther-Universität Halle-Wittenberg)

Researcher:

M. Sc. Lena Brüggenwirth

Duration:

2019-2022

Funded by:

DFG

 

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Sinks and vectors of antimony in the environment: Antimony isotopes and solubility

 

Supervisor:

Dr. M. Lazarov, Prof. Dr. Juro Maizlan (Jena)

Researcher:

M. Sc. Andreas Kaufmann

Duration:

2019-2022

Funded by:

DFG

 

 

Formation of monomineralic Fe-Ti oxide ores in the high-Ti ferrobasaltic system: A case study in Emeishan, China

 

Supervisor:

Prof. Dr. Francois Holtz

Researcher:

M. Sc. Sarah-Lynn Haselbach

Duration:

2018-2021

Funded by:

DFG

 

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Melting and storage conditions of rhyolites in the Snake River Plain Province , USA

 

Supervisor:

Prof. Dr. Francois Holtz

Researcher:

Dr. Renat Almeev

Duration:

2018-2022

Funded by:

DFG

 

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Understanding axial melt lens dynamics and lower crust accretion at fast-spreading mid-ocean ridges: new insights from drill cores obtained by the ICDP Oman Drilling Project

 

Supervisor:

Prof. Dr. Jürgen Koepke, Dr. Carl-Dieter Garbe-Schönberg

Researcher:

M. Sc. Dominik Mock

Duration:

2018-2022

Funded by:

DFG

 

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Effects of cutting edge residual stresses on the wear behavior of PVD-coated cutting tools

 

Supervisor:

Prof. Dr. Harald Behrens, Dr. Bernd Breidenstein

Duration:

2018-2021

Funded by:

DFG

 

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The ferric/ferrous ratio in silicic melts: experimental investigation and modelling

 

Supervisor:

Dr. Renat Almeev

Funded by:

DFG

 

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Understanding felsic veins in gabbros drilled by IODP at Atlantis Bank (Southwest Indian Ridge): Formation, metamorphism, and their role as multifunctional pathways for fluid and mass transfer

 

Supervisor:

Prof. Dr. Jürgen Koepke

Researcher:

M. Sc. Artur Engelhardt

Duration:

2019-2022

Funded by:

DFG

 

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Soil manganese: Speciation, transformation, and reactivity

 

Supervisor:

Prof. Dr. Christian Mikutta

Researcher:

M. Sc. Teresa Zahoransky

Duration:

2018-2021

Funded by:

DFG

 

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Aluminum interactions with iron oxides in the absence and presence of silicic acid

 

Supervisor:

Prof. Dr. Christian Mikutta, Prof. Dr. Robert Mikutta (Martin-Luther-Universität Halle-Wittenberg)

Researcher:

M. Sc. Svenja Heimann

Duration:

2018-2021

Funded by:

DFG

 

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Stromatolites as archive for metal cycling and early life: uranium and molybdenum isotope studies of modern and Archean stromatolites

 

Supervisor:

Prof. Dr. S. Weyer

Researcher:

M. Sc. Ashley Martin

Duration:

2018-2021

Funded by:

DFG: SPP 1833

 

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Natural variations of the 51V/ 50V isotope composition: A new redox tracer?

 

Supervisor:

PD Dr. S. Schuth

Researcher:

eigene Stelle

Duration:

2018-2021

Funded by:

DFG

 

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Metal transfer in CO2-rich geological fluids

 

Supervisor:

PD Dr. Nuo Li

Researcher:

eigene Stelle

Duration:

2018-2020

Funded by:

Humboldt foundation

 

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Kristallisation unter Einfluss der Flotation: neue Wege zur Synthese selbsttragender Zeolith-Membranen

 

Supervisor:

Prof. Dr. J. C. Buhl

Researcher:

Dr. I. Peschke

Duration:

2018-2020

Funded by:

DFG

 

 

Auswirkung der Schneidkanteneigenspannungen auf das Verschleißverhalten PVD-beschichteter Zerspanwerkzeuge

Bild zum Projekt Auswirkung der Schneidkanteneigenspannungen auf das Verschleißverhalten PVD-beschichteter Zerspanwerkzeuge

Supervisor:

Prof. Breidenstein, Bernd (breidenstein@ifw.uni-hannover.de), Prof. Behrens, Harald (h.behrens@mineralogie.uni-hannover.de)

Researcher:

Dipl.-Geow. Marcel Dietrich, m.dietrich@mineralogie.uni-hannover.de

Duration:

2018-2020

Funded by:

DFG

Brief description:

Residual stresses in hard material layers have a large influence on the tool life. Measurement at the cutting edge is not possible with the established methods. Raman spectroscopy shows high potential for this measurement task. The measurement method is calibrated by X-ray diffraction in the scattering vector mode.

 

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ICDP – Oman Koordination

 

Supervisor:

Prof. Dr. Koepke

Duration:

2017-2019

Funded by:

DFG

 

 

Uranium isotope fractionation: a novel biosignature to identify microbial metabolism on early Earth (UNEARTH)

 

Supervisor:

Prof. Bernier-Latmani (EPFL, CH), Projektpartner: Prof. Weyer

Researcher:

M. Sc. Yvonne Röbbert, M.Sc. Annika Neddermeyer

Duration:

2017-2022

Funded by:

durch EU: ERC-consolidator grant

 

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Differentiation of tholeiites - the role of primitive composition and small amounts of H2O

 

Supervisor:

Prof. Dr. Francois Holtz

Researcher:

Dr. Renat Almeev

Duration:

2016-2019

Funded by:

DFG

 

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Chlorine in amphibole: intracrystalline diffusion and partitioning between amphibole and silicate melt

 

Supervisor:

Prof. Dr. Harald Behrens

Researcher:

Dr. Xiaoyan Li

Duration:

2016-2020

Funded by:

DFG

 

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Supply of soluble Fe to ocean surface waters - quantitative approaches from ICDP site Hawaii by determining interface driven Fe transfer from subsurface volcanic rocks

 

Supervisor:

Prof. Dr. Harald Behrens

Duration:

2016-2019

Funded by:

DFG

 

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A profile of multiple sulfur, oxygen, strontium isotopes and related chalcophile elements through lower slow-spreading crust (IODP Expedition 360, Atlantis Bank, Southwest Indian Ridge)

 

Supervisor:

Prof. Dr. rer. nat. Jürgen Koepke, Prof. Dr. Harald Strauß

Funded by:

DFG

 

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Fate of tetravalent uranium under reducing conditions

 

Supervisor:

Prof. Dr. S. Weyer

Researcher:

M. Sc. Yvonne Röbbert

Duration:

2016-2020

Funded by:

DFG - part of a D-A-Ch project together with R. Bernier-Lamani (EPFL) and S. Krämer (Wien)

 

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Li isotope fractionation in magmatic systems: Constraints from in situ 7Li determinations on magmatic minerals by femtosecond-laser ablation-MC-ICP-MS

 

Supervisor:

Dr. M. Oeser, Prof. Dr. S. Weyer

Researcher:

M. Sc. Lena Steinmann

Duration:

2016-2019

Funded by:

DFG

 

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Long in-situ sections in the Wadi Gideah, Oman ophiolite: The key for understanding the mechanism of accretion, magmatic evolution and cooling of lower fast-spread oceanic crust

 

Supervisor:

Prof. Dr. Jürgen Koepke, Dr. Carl-Dieter Garbe-Schönberg

Duration:

2015-2018

Funded by:

DFG

 

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Melt/rock interaction and fractional crystallization in the lower crust at Hess Deep Rift, East Pacific Rise: A combined analytical and experimental study

 

Supervisor:

Prof. Dr. Jürgen Koepke

Duration:

2015-2018

Funded by:

DFG

 

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Silicate liquid immiscibility and the formation of Fe (±Ti ±P ±F ±REE) ore deposits

 

Supervisor:

Prof. Dr. Jürgen Koepke

Duration:

2015-2018

Funded by:

DFG

 

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The effect of network-modifiers (Mg, Ca, Na and K) on ferric/ferrous ratio in silicate melts: experimental study and improvement of existing models.

 

Supervisor:

Prof. Dr. Francois Holtz

Funded by:

DFG

 

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Uranium and V isotope variations in Archean sediments

 

Supervisor:

Prof. S. Weyer, Dr. S. Schuth

Researcher:

M. Sc. Annika Neddermeyer (geb. Brüske)

Duration:

2015-2019

Funded by:

DFG: SPP1833

 

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The origin of metal and chondrules in CH and CB chondrites – Evidence from Fe, Ni, and Mg isotopes

 

Supervisor:

Prof. Dr. Stefan Weyer (LU Hannover), Dr. Jutta Zipfel (Senckenberg Forschungsinstitut und Naturmuseum Frankfurt)

Researcher:

Mona Weyrauch

Duration:

2015-2018

Funded by:

DFG SPP 1385

 

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Forearc basalt and boninite lineage: origin and evolution of magmas in the course of subduction initiation, Izu-Bonin Mariana arc

 

Supervisor:

Dr. Renat Almeev

Duration:

2015-2018

Funded by:

DFG

 

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Impact of structure and relaxation on fatigue and micromechanical properties of oxide glasses - the role of volatiles and bonding state

 

Supervisor:

Prof. Dr. Harald Behrens; Prof. Dr.-Ing. Joachim Deubener; Dr. Ralf Müller

Funded by:

DFG

 

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The economic-cultural impact of the raw material clay for the brick city Luneburg

 

Supervisor:

Prof. Dr. Buhl, PD Dr. Pries (Leuphana Universität), Dr. Herdeg (Naturmuseum Lüneburg), Dr. Ring (Naturmuseum Lüneburg)

Researcher:

Corinna Grader, Antje Seidel (Leuphana Universität)

Duration:

4 Jahre

Funded by:

VW-Stiftung

 

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„Methode zur Charakterisierung der Bearbeitbarkeit von sprödhartem Verbundwerkstoff“. DFG gefördertes Projekt in Kooperation mit dem Institut für Fertigungstechnik und Werkzeugmaschinen (Prof. Dr. B. Denkena)

 

Supervisor:

Prof. Dr. J. C. Buhl und Dr. S. H. Rahman (Projektteil des Instituts für Mineralogie)

Funded by:

DFG

 

 

„Temperaturabhängige Korrelation von Kristallstruktur mit Diffusionskoeffizienten, Ionenleitfähigkeit, Magnetismus und elastischen Konstanten Mullit-ähnlicher Bi-Oxide.“

 

Supervisor:

verantwortlich für Hannover: Prof. Dr. T. M. Gesing, Prof. Dr. C. H. Rüscher und Prof. Dr. J.C. Buhl

Funded by:

DFG

 

 

„Die wirtschaftlich-kulturelle Bedeutung des Rohstoffes Ton für die Backsteinstadt Lüneburg.“

 

Supervisor:

verantwortlich für Hannover: Prof. Dr. J.C. Buhl

Funded by:

VW-Stiftung

 

 

“Synthesis and Characterization of Zeolite and New Inorganic Polymeric Composites from Jordanian Kaolin –Towards Industrial Applications”

 

Supervisor:

Prof. Dr. J.C. Buhl

Researcher:

Dr. M. Gougazeh

Funded by:

DFG

 

 

„Bildungsprozesse Nanokristalliner Zeolithe aus mineralischen Reststoffen bei kurzer Reaktionszeit unter hochalkalischen Niedertemperaturbedingungen“

 

Supervisor:

Prof. Dr. J.C. Buhl

Researcher:

Dr. A. Hartmann

Funded by:

DFG