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Professor Dr. Francois Holtz, Ph.D.

Address No current work address.

Projects

As Applicant
- Current projects
  - Carbon recycling by arc magmatism: an assessment from experimentally homogenized melt inclusions in olivine (Research Grants)
  - Understanding the crust-mantle transition from fast-spreading mid-ocean ridges: experiments and analytical studies using ICDP OmanDP drill core samples (Infrastructure Priority Programmes)
  - Transport and enrichment of tungsten and tin in melts and fluids at magmatic-hydrothermal stages: experimental approach and application to the Argemela district (Portugal) (Priority Programmes)
  - Spectroscopic mineral - chemical analysis of drill cores: Development of fast 2D LIBS, EDXRF and hyperspectral scanning with application to outstanding problems of the Bushveld Complex layered intrusion (Infrastructure Priority Programmes)
  - The mafic magma plumbing system in the Snake River Plain Province (Yellowstone hotspot, USA): Contribution from the analysis of crystal cargoes and melt inclusions in basaltic lavas from the Kimama drilling core. (Infrastructure Priority Programmes)
  - Diffusion in common mineral phases. Part 3: Chain silicates: pyroxene and amphibole (Research Units)
  - Amphibole stability and chemistry in mafic calc-alkaline and alkaline magmas (Research Units)
- Completed projects
  - Differentiation of basalts from the Kerguelen Plateau ("large igneous province") (Infrastructure Priority Programmes)
  - Experimentelle Untersuchungen über die Wechselwirkungen zwischen C-H-O-S Fluiden und Magmen (Infrastructure Priority Programmes)
  - Distribution of H20, CO2, S and Cl between silicate melts, gas phase and minerals on the example of the Unzen volcano: application for degassing processes (Infrastructure Priority Programmes)
  - Thermodynamik modeling of alkali-rich melt properties based on experimental and structural data (Research Grants)
  - Low pressure differentiation of basalts at the Mid-Atlantic Ridge near Ascension - Constraints from experiments at controlled volatile and oxygen fugacities (Priority Programmes)
  - Pre-eruptive conditions prior to and after magma mixing at Unzen volcano: constraints from high pressure experimental investigations (Infrastructure Priority Programmes)
  - Mobility, speciation and distribution of platinum group elements in silicate melts and fluids at high pressure (Research Grants)
  - Die Suche nach Magmakammern unter Stratovulkanen der zentralen Anden (N. Chile) mit petrologischen, geochemischen und geophysikalischen Methoden. (Research Grants)
  - Magma differentiation processes and pre-eruptive conditions of MORBs (7-11°S) near Ascension Island - Constraints from experiments and phase equilibria modeling (Priority Programmes)
  - The down-hole magmatic-metamorphic evolution in basalts and gabbros monitored by Fe-Ti oxides: A complete section of Superfast Spreading Crust at IODP Site 1256D (Infrastructure Priority Programmes)
  - Pre-eruptive conditions of the volcanic rocks from Snake River Plain, Yellowstone Hotspot-Constraints from experiments and phase equilibria modelling (Infrastructure Priority Programmes)
  - Experimental study on vesiculation and formation of groundmass microlites induced by decompression: Constraints on processes related to magma ascent at Unzen volcano (Infrastructure Priority Programmes)
  - Crystallization of columbite-tantalite in pegmatites: Experimental constraints and implication for natural systems (Research Grants)
  - Storage conditions and degassing processes of low-K and high-Al tholeiitic island-arc magmas: Experimental constraints and natural observations for Mutnovsky volcano, Kamchatka (Infrastructure Priority Programmes)
  - Evolution of magma storage conditions along the track of Yellowstone Hotspot: investigation of the volcanic rocks from Snake River Plain (Infrastructure Priority Programmes)
  - Magma Differentiation processes and volatile contents in Shatsky Rise oceanic Plateau basalts: constraints from mineral, glass and melt inclusion compositions combined with experimental and thermodynamic modeling (Infrastructure Priority Programmes)
  - The effect of network-formers (Si, Ti, Al and P) on ferric/ferrous ratio in silicate melts: experimental study and improvement of existing models. (Research Grants)
  - Determination of the depth of rhyolitic magma chambers in the Snake River Plain province, USA,: an experimental calibration (Infrastructure Priority Programmes)
  - Differentiation of tholeiites - the role of primitive composition and small amounts of H2O (Research Grants)
  - Formation of monomineralic Fe-Ti oxide ores in the high-Ti ferrobasaltic system: A case study in Emeishan, China (Research Grants)
  - Melting and storage conditions of rhyolites in the Snake River Plain Province , USA (Infrastructure Priority Programmes)
  - The effect of network-modifiers (Mg, Ca, Na and K) on ferric/ferrous ratio in silicate melts: experimental study and improvement of existing models. (Research Grants)
  - Magmatic volatiles and ore metals released from intraoceanic arc magmas: constraints from high pressure experiments and melt inclusions for Brothers volcano, Kermadec arc (Infrastructure Priority Programmes)
  - Rare-metal enrichment in carbonatite-bearing magmatic systems: Part A. Understanding magmatic evolution and enrichment processes in time by high-precision dating and inclusion studies (Priority Programmes)
  - 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 (Priority Programmes)
As Leader
- Completed projects
  - Rasterelektronenmikroskop (Major Research Instrumentation)
  - Elektronenstrahlmikrosonde (Major Research Instrumentation)
As Participating Person
- Completed projects
  - Experimentelle Untersuchung zur Entwicklung und Differenzierung von SiO2-reichen Schmelzen in der ozeanischen Kruste: Die Genese der Plagiogranite (Priority Programmes)
  - Genesis Ascent and Crystallization of A-type granites (Priority Programmes)
  - Trace element distribution in eclogite facies former Plagioklas Cumulates (Research Grants)
  - Experimental investigation on the phase equilibra of a tholeiitic ferrobasalt: the role of water activity and oxigen fugacity (Priority Programmes)
  - Viscous flow of magmas from Unzen volcano, Japan - implications for magma mixing and ascent (Infrastructure Priority Programmes)
  - Pre-eruptive volatile contents and degassing potential of Kerguelen large igneous province (LIP) basalts: Experimental study on basalts of the ODP Leg 183, site 1140 (Infrastructure Priority Programmes)
  - Partitioning of sulfur and sulfur isotopes between fluids and melts - a key for understanding and monitoring of magmatic degassing (Research Grants)
  - Viscous flow and diffusion in highly depolymerized water-rich melts: improvement of experimental methods and implication for natural system (Research Grants)
As Co-Investigator
- Current projects
  - Izu-Bonin-Mariana boninites - natural laboratory to study mantle melting and the evolution of magma plumbing systems in early stages of subduction (Infrastructure Priority Programmes)
  - 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 (Infrastructure Priority Programmes)
  - HFSE enrichment in carbonatites and associated peridotite-melilitolite-foidolite complexes: the role of fractionation versus metasomatism in ore-forming processes (Priority Programmes)
  - Deciphering the metal stable isotope record of Sn-W ore deposits: a complementary approach based on experiments and case studies (Priority Programmes)
  - Large Scale Artificial Intelligence Augmented Mineral Analysis (LS-MAIner) – characterization of volcanic rocks for diffusion chronometry (Research Units)
- Completed projects
  - Chlorine in amphibole: intracrystalline diffusion and partitioning between amphibole and silicate melt (Research Grants)
  - Experimental study on the production of rhyolites from basaltic sources in the bimodal Snake River Plain-Yellowstone province (Infrastructure Priority Programmes)
  - Unravelling disequilibrium in basaltic crystal cargoes: an experimental and petrological study of mixing in primitive Icelandic magmas (Research Grants)
  - Forearc basalt and boninite lineage: origin and evolution of magmas in the course of subduction initiation, Izu-Bonin Mariana arc (Infrastructure Priority Programmes)
  - Effects of cutting edge residual stresses on the wear behavior of PVD-coated cutting tools (Research Grants)
  - 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 (Infrastructure Priority Programmes)
  - Crystallization and Degassing Processes during Strombolian Eruptions: A Numerical Approach (Research Grants)
  - The ferric/ferrous ratio in silicic melts: experimental investigation and modelling (Research Grants)

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