Projects
Does modern seep aragonite record the molybdenum isotopic composition of seawater?
Weyer, S. (Principal Investigator)
1 Oct 2024 → 30 Sept 2027
Project: Research
Amphibole stability and chemistry in mafic calc-alkaline and alkaline magmas (sub-project TP 4 of the Research Unit 2881: Diffusion Chronometry of magmatic systems)
Marxer, F. (Principal Investigator) & Holtz, F. (Principal Investigator)
1 Sept 2024 → 31 Aug 2027
Project: Research
Wehrlites in the ICDP OmanDP drill cores: a key to understand the nature of the hydrous magmatism in subduction zone initiation settings (project in the Priority Programme 1006 " International Continental Scientific Drilling Program (ICDP)")
Koepke, J. (Principal Investigator) & Almeev, R. (Principal Investigator)
1 Jul 2024 → 30 Jun 2025
Project: Research
Large Scale Artificial Intelligence Augmented Mineral Analysis (LS-MAIner) – characterization of volcanic rocks for diffusion chronometry (sub-project TP8 of the Research Unit 2881: Diffusion Chronometry of magmatic systems)
Sester, M. (Principal Investigator), Almeev, R. (Principal Investigator), Holtz, F. (Co-Investigator) & Leichter, A. (Project staff)
1 Apr 2024 → 28 Feb 2028
Project: Research
The ferric/ferrous ratio in silicic melts: experimental investigation and modelling
Almeev, R. (Principal Investigator), Behrens, H. (Co-Investigator) & Holtz, F. (Co-Investigator)
1 Jun 2023 → 31 May 2024
Project: Research
Determination of ferric-ferrous ratio in natural glasses by microprobe: application of the flank method for determination of the redox state of basalts from mid-oceanic ridges, oceanic islands, oceanic plateaus and island arcs (project in the Priority Programme 527: Bereich Infrastruktur - "International Ocean Discovery Program" (IODP))
Almeev, R. (Principal Investigator) & Holtz, F. (Co-Investigator)
1 Jan 2023 → 31 Dec 2025
Project: Research
Mineralogische Kontrolle der Speicherung und Stabilität organischer Substanz in tropischen Vertisolen
Schnee, L. S. (Principal Investigator)
1 Nov 2022 → 31 Oct 2023
Project: Research
Arsenic and Molybdenum in Marine Carbonates: Redistribution, Binding Forms and Isotope Systematics
Weyer, S. (Principal Investigator)
1 Feb 2022 → 31 Jan 2025
Project: Research
Oxidation-induced Weathering of Primary Iron-rich Silicates: Scale-dependent Rates and their Controls
Behrens, R. (Principal Investigator)
1 Jan 2022 → 31 Dec 2023
Project: Research
Izu-Bonin-Mariana boninites - natural laboratory to study mantle melting and the evolution of magma plumbing systems in early stages of subduction (project in the Priority Programme 527: Ocean Drilling Program/Deep Sea Drilling Project)
Almeev, R. (Principal Investigator), Holtz, F. (Co-Investigator) & Koepke, J. (Co-Investigator)
1 Nov 2021 → 31 Oct 2024
Project: Research
Magma Reservoire und Differenzierung der mafischen Magmen der Snake River Plain Provinz (Yellowstone-Hotspot, USA): Beitrag aus der Ananlyse von Kristallen und Schmelzeinschlüssen in basaltischen Laven des Kimama-Bohrkerns (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Holtz, F. (Principal Investigator)
1 Jul 2021 → 30 Jun 2024
Project: Research
Rare-metal enrichment in carbonatite-bearing magmatic systems: Part B. Understanding the role of fractional crystallization and liquid immiscibility by experimental simulations of silicate-carbonatite systems (project in the Priority Programme 2238: Dynamics of Ore-Metals Enrichment (DOME))
Holtz, F. (Principal Investigator)
1 May 2021 → 30 Apr 2024
Project: Research
Understanding the crust-mantle transition from fast-spreading mid-ocean ridges: experiments and analytical studies using ICDP OmanDP drill core samples (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Holtz, F. (Principal Investigator) & Koepke, J. (Principal Investigator)
1 May 2021 → 30 Apr 2024
Project: Research
Abundance and composition of inorganic X-ray amorphous materials in soils
Mikutta, C. (Principal Investigator)
1 Apr 2021 → 31 Jan 2025
Project: Research
Transport and reactions of light elements (Li, B) in pegmatitic systems under thermal disequilibrium - implications for magmatic/hydrothermal ore deposits (project in the Priority Programme 2238: Dynamics of Ore-Metals Enrichment (DOME))
Behrens, H. (Principal Investigator), Weyer, S. (Principal Investigator) & Singer, C. (Co-Investigator)
1 Apr 2021 → 30 Jun 2024
Project: Research
Transport and enrichment of tungsten and tin in melts and fluids at magmatic-hydrothermal stages: experimental approach and application to the Argemela district (Portugal) (project in the Priority Programme 2238: Dynamics of Ore-Metals Enrichment (DOME))
Holtz, F. (Principal Investigator)
1 Jan 2021 → 31 Dec 2023
Project: Research
Chronometry in plutonic rocks: cooling rates of ancient oceanic crust (sub-project TP7 of the Research Unit 2881: Diffusion Chronometry of magmatic systems)
Kirchenbaur da Fonseca, M. (Principal Investigator)
1 Nov 2020 → 31 Jul 2024
Project: Research
Diffusion-driven Fe-Mg and Li isotope fractionation in olivine: An experimental investigation and new modeling approach (sub-project TP3 of the Research Unit 2881: Diffusion Chronometry of magmatic systems)
Weyer, S. (Principal Investigator)
1 Nov 2020 → 31 May 2024
Project: Research
Diffusion in common mineral phases. Part 1: pyroxene (sub-project TP1 of the Research Unit 2881: Diffusion Chronometry of magmatic systems)
Behrens, H. (Principal Investigator)
1 Nov 2020 → 31 Oct 2023
Project: Research
Diffusion in common mineral phases. Part 2: plagioclase (sub-project TP2 of the Research Unit 2881: Diffusion Chronometry of magmatic systems)
Behrens, H. (Principal Investigator)
1 Nov 2020 → 31 Mar 2024
Project: Research
Influence of hydroxamate siderophores on redox-sensitive trace elements and their isotopes and their relevance for the application of redox proxies in paleo-climate reconstruction studies
Weyer, S. (Principal Investigator)
1 Nov 2020 → 31 Oct 2022
Project: Research
Phase stability fields in calc-alkaline magmatic systems and textural evolution of crystalline aggregates (sub-project TP4 of the Research Unit 2881: Diffusion Chronometry of magmatic systems)
Holtz, F. (Principal Investigator)
1 Nov 2020 → 31 May 2024
Project: Research
ICDP: Priority Programme 1006: International Continental Drilling Program (ICDP) (Coordination funds)
Koepke, J. (Principal Investigator) & Mikutta, C. (Principal Investigator)
1 Aug 2020 → 31 Jul 2021
Project: Research
Crystallization under the influence of flotation: new synthesis routes for self-supported zeolite membranes
Buhl, J. (Principal Investigator)
15 May 2020 → 30 Jun 2021
Project: Research
Carbon recycling by arc magmatism: an assessment from experimentally homogenized melt inclusions in olivine
Holtz, F. (Principal Investigator)
1 Mar 2020 → 31 Mar 2025
Project: Research
Mineral surfaces as hotspots for microbes and element cycling in the Biodiversity Exploratories (project in the Priority Programme 1374: Exploratories for Long-Term and Large-Scale Biodiversity Research (Biodiversity Exploratories)
Mikutta, C. (Principal Investigator)
1 Feb 2020 → 30 Apr 2023
Project: Research
Elektronenstrahlmikrosonde
Holtz, F. (Principal Investigator)
30 Jan 2020 → 30 Jun 2021
Project: Research
Magmatic volatiles and ore metals released from intraoceanic arc magmas: constraints from high pressure experiments and melt inclusions for Brothers volcano, Kermadec arc (project in the Priority Programme 527: International Ocean Discovery Program)
Holtz, F. (Principal Investigator)
1 Jan 2020 → 31 Aug 2023
Project: Research
Natural variations of the 51V/50V isotope composition: A new redox tracer?
Mikutta, C. (Principal Investigator) & Schuth, S. (Principal Investigator)
1 Jan 2020 → 30 Jun 2021
Project: Research
Amphibole: a mineral to unravel magma storage and timescales of sub-volcanic processes and eruptions
Ridolfi, F. (Principal Investigator)
1 Oct 2019 → 31 Dec 2021
Project: Research
New insights into the interplay between water diffusion and viscosity in magma fragmentation
Behrens, H. (Principal Investigator)
1 Oct 2019 → 30 Jun 2020
Project: Research
Interactions between manganese oxides and dissolved organic matter in soil
Mikutta, C. (Principal Investigator)
1 Sept 2019 → 31 Oct 2023
Project: Research
ICDP: Priority Programme 1006: International Continental Drilling Program (Coordination funds)
Koepke, J. (Principal Investigator)
1 Aug 2019 → 31 Jul 2020
Project: Research
Effects of Redox Oscillations on Soil Clay Mineralogy and Colloid Dynamics
Mikutta, C. (Principal Investigator)
1 Jun 2019 → 30 Sept 2022
Project: Research
ICP-MS/MS mit Ionenchromatographiekopplung
Mikutta, C. (Principal Investigator)
20 Mar 2019 → 31 Dec 2019
Project: Research
Antimony isotope fractionation and thermodynamics during oxidative weathering of stibnite ores
Lazarov, M. (Principal Investigator)
1 Mar 2019 → 31 Mar 2023
Project: Research
The ferric/ferrous ratio in silicic melts: experimental investigation and modelling
Almeev, R. (Principal Investigator)
10 Feb 2019 → 9 Feb 2021
Project: Research
Molecular-scale mechanisms of antimony binding to soil organic matter
Mikutta, C. (Principal Investigator)
1 Dec 2018 → 31 Oct 2022
Project: Research
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 (project in the Priority Programme 527: Bereich Infrastruktur - Integrated Ocean Drilling Program/Ocean Drilling Program (IODP/ODP))
Koepke, J. (Principal Investigator) & Holtz, F. (Co-Investigator)
1 Nov 2018 → 30 Sept 2022
Project: Research
Stromatolites as archives for metal mobilization and early life metabolisms? Uranium and Mo isotope studies of modern and Archean stromatolites and carbonates (project in the Priority Programme 1833: Building a Habitable Earth)
Weyer, S. (Principal Investigator)
1 Sept 2018 → 30 Aug 2021
Project: Research
Formation of monomineralic Fe-Ti oxide ores in the high-Ti ferrobasaltic system: A case study in Emeishan, China
Holtz, F. (Principal Investigator)
1 Jul 2018 → 31 Dec 2021
Project: Research
Melt/rock interaction and fractional crystallization in the lower crust at Hess Deep Rift, East Pacific Rise: A combined analytical and experimental study (project in the Priority Programme 527: Bereich Infrastruktur - Integrated Ocean Drilling Program/Ocean Drilling Program (IODP/ODP))
Koepke, J. (Principal Investigator)
1 Jul 2018 → 15 Jan 2020
Project: Research
Effects of cutting edge residual stresses on the wear behavior of PVD-coated cutting tools
Behrens, H. (Principal Investigator), Breidenstein, B. (Principal Investigator), Grove, T. (Co-Investigator), Holtz, F. (Co-Investigator) & Koepke, J. (Co-Investigator)
1 May 2018 → 31 Oct 2020
Project: Research
Melting and storage conditions of rhyolites in the Snake River Plain Province, USA (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Holtz, F. (Principal Investigator) & Almeev, R. (Co-applicant)
1 May 2018 → 30 Apr 2023
Project: Research
ICDP: Priority Programme 1006: International Continental Drilling Program (Coordination funds)
Koepke, J. (Principal Investigator)
1 May 2018 → 31 Oct 2019
Project: Research
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 (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Koepke, J. (Principal Investigator)
1 May 2018 → 30 Sept 2021
Project: Research
Crystallization under the influence of flotation: new synthesis routes for self-supported zeolite membranes
Buhl, J. (Principal Investigator)
1 Apr 2018 → 31 Mar 2020
Project: Research
Supply of soluble Fe to ocean surface waters - quantitative approaches from ICDP site Hawaii by determining interface driven Fe transfer from subsurface volcanic rocks (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Behrens, H. (Principal Investigator)
15 Mar 2018 → 14 Aug 2019
Project: Research
Aluminum interactions with iron oxides in the absence and presence of silicic acid
Mikutta, C. (Principal Investigator)
1 Mar 2018 → 31 May 2021
Project: Research
The effect of network-modifiers (Mg, Ca, Na and K) on ferric/ferrous ratio in silicate melts: experimental study and improvement of existing models
Holtz, F. (Principal Investigator) & Behrens, H. (Co-Investigator)
1 Mar 2018 → 28 Feb 2019
Project: Research
Forearc basalt and boninite lineage: origin and evolution of magmas in the course of subduction initiation, Izu-Bonin Mariana arc (project in the Priority Programme 527: Ocean Drilling Program/Deep Sea Drilling Project)
Almeev, R. (Principal Investigator) & Holtz, F. (Co-Investigator)
1 Feb 2018 → 31 Jan 2019
Project: Research
Heisenberg Professorship: Soil mineralogy
Mikutta, C. (Principal Investigator)
1 Feb 2018 → 30 Jun 2022
Project: Research
Natural variations of the 51V/50V isotope composition: A new redox tracer?
Schuth, S. (Principal Investigator)
1 Feb 2018 → 31 Jul 2020
Project: Research
Soil Manganese: Speciation, Transformation, and Reactivity
Mikutta, C. (Principal Investigator)
1 Feb 2018 → 31 Mar 2022
Project: Research
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 (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Koepke, J. (Principal Investigator) & Almeev, R. (Co-Investigator)
1 Nov 2017 → 31 Oct 2018
Project: Research
Rasterelektronenmikroskop
Holtz, F. (Principal Investigator)
5 Jul 2017 → 30 Jun 2018
Project: Research
Unravelling disequilibrium in basaltic crystal cargoes: an experimental and petrological study of mixing in primitive Icelandic magmas
Holtz, F. (Principal Investigator)
1 Jul 2017 → 30 Jun 2020
Project: Research
Heinz Maier-Leibnitz Prize 2017
Namur, O. (Principal Investigator)
1 May 2017 → 30 Apr 2020
Project: Research
ICDP: Priority Programme 1006: International Continental Drilling Program (Coordination funds)
Koepke, J. (Principal Investigator)
1 May 2017 → 30 Apr 2018
Project: Research
Experimental study on the production of rhyolites from basaltic sources in the bimodal Snake River Plain-Yellowstone province (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Almeev, R. (Principal Investigator) & Holtz, F. (Co-Investigator)
1 Apr 2017 → 15 Jan 2019
Project: Research
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) (project in the Priority Programme 527: Bereich Infrastruktur - Integrated Ocean Drilling Program/Ocean Drilling Program (IODP/ODP))
Koepke, J. (Principal Investigator)
1 Jan 2017 → 31 Dec 2018
Project: Research
Chalcophile elements in Shatsky Rise basalts as potential indicators of the mantle plume origin (project in the Priority Programme 527: Bereich Infrastruktur - Integrated Ocean Drilling Program/Ocean Drilling Program (IODP/ODP))
Almeev, R. (Principal Investigator)
1 Jan 2017 → 31 Dec 2018
Project: Research
Reconstruction of Seawater Carbonate chemistry during the last Glacial-Interglacial transition from Boron isotopic ratios and concentrations in foraminifera
Horn, I. (Principal Investigator)
1 Dec 2016 → 31 Jan 2020
Project: Research
Using basaltic crystal mushes to understand the mechanisms of crust formation and the deep structure of basaltic volcanoes
Namur, O. (Principal Investigator) & Holtz, F. (Principal Investigator)
1 Nov 2016 → 31 Oct 2019
Project: Research
Differentiation of tholeiites - the role of primitive composition and small amounts of H₂O
Holtz, F. (Principal Investigator) & Koepke, J. (Co-Investigator)
1 Aug 2016 → 31 Jul 2019
Project: Research
Supply of soluble Fe to ocean surface waters - quantitative approaches from ICDP site Hawaii by determining interface driven Fe transfer from subsurface volcanic rocks (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Behrens, H. (Principal Investigator)
1 Aug 2016 → 31 Jul 2018
Project: Research
Fate of tetravalent uranium under reducing conditions
Weyer, S. (Principal Investigator)
15 Jul 2016 → 14 Jul 2020
Project: Research
Chlorine in amphibole: intracrystalline diffusion and partitioning between amphibole and silicate melt
Behrens, H. (Principal Investigator) & Holtz, F. (Co-Investigator)
1 Jul 2016 → 30 Jun 2020
Project: Research
X-ray microscopy as a fast response tool to exploit processing-microstructure-property relationships for advanced material development
Maier, H. J. (Principal Investigator), Wriggers, P. (Co-Investigator) & Behrens, H. (Co-Investigator)
1 Apr 2016 → 31 Mar 2018
Project: Research
Li isotope fractionation in magmatic systems: Constraints from in situ analyses on magmatic minerals by femtosecond-laser ablation-MC-ICP-MS
Oeser-Rabe, M. A. (Principal Investigator) & Weyer, S. (Co-Investigator)
1 Mar 2016 → 28 Feb 2019
Project: Research
Silicate liquid immiscibility and the formation of Fe (±Ti ±P ±F ±REE) ore deposits
Koepke, J. (Principal Investigator)
1 Feb 2016 → 31 May 2020
Project: Research
The effect of network-modifiers (Mg, Ca, Na and K) on ferric/ferrous ratio in silicate melts: experimental study and improvement of existing models
Holtz, F. (Principal Investigator) & Behrens, H. (Co-Investigator)
1 Feb 2016 → 31 Jan 2018
Project: Research
Impact of structure and relaxation on fatigue and micromechanical properties of oxide glasses - the role of volatiles and bonding state (project in the Priority Programme 1594: Topological Engineering of Ultra-Strong Glasses)
Behrens, H. (Principal Investigator)
15 Jan 2016 → 14 Jan 2019
Project: Research
Forearc basalt and boninite lineage: origin and evolution of magmas in the course of subduction initiation, Izu-Bonin Mariana arc (project in the Priority Programme 527: Ocean Drilling Program/Deep Sea Drilling Project)
Almeev, R. (Principal Investigator) & Holtz, F. (Co-Investigator)
1 Jan 2016 → 31 Dec 2017
Project: Research
Behavior of chalcophile elements in subduction zone processes
Botcharnikov, R. (Principal Investigator)
1 Dec 2015 → 30 Nov 2018
Project: Research
Melt/rock interaction and fractional crystallization in the lower crust at Hess Deep Rift, East Pacific Rise: A combined analytical and experimental study (project in the Priority Programme 527: Bereich Infrastruktur - Integrated Ocean Drilling Program/Ocean Drilling Program (IODP/ODP))
Koepke, J. (Principal Investigator)
1 Dec 2015 → 31 Jul 2019
Project: Research
Uranium and V isotope variations in Archean sediments: Evidence for metal mobilization and enzymatic reduction in an overall anoxic world? (project in the Priority Programme 1833: Building a Habitable Earth)
Weyer, S. (Principal Investigator) & Schuth, S. (Principal Investigator)
1 Sept 2015 → 31 Aug 2018
Project: Research
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 (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Koepke, J. (Principal Investigator)
1 Jun 2015 → 31 May 2017
Project: Research
Determination of the depth of rhyolitic magma chambers in the Snake River Plain province, USA,: an experimental calibration (project in the Priority Programme 1006: International Continental Drilling Program (ICDP))
Holtz, F. (Principal Investigator), Almeev, R. (Co-Investigator) & Behrens, H. (Co-Investigator)
1 May 2015 → 30 Apr 2016
Project: Research