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Professor Stefan Weyer, Ph.D.

Address Gottfried Wilhelm Leibniz Universität Hannover
Institut für Mineralogie
Callinstraße 3
30167 Hannover

Projects

As Applicant
- Current projects
  - Arsenic and Molybdenum in Marine Carbonates: Redistribution, Binding Forms and Isotope Systematics (Research Grants)
  - Deciphering the metal stable isotope record of Sn-W ore deposits: a complementary approach based on experiments and case studies (Priority Programmes)
  - Does modern seep aragonite record the molybdenum isotopic composition of seawater? (Research Grants)
  - Expansion and connection of Early Jurassic oceanic anoxia: A complementary approach based on coupled Mo-U isotopes of black shales and U isotope signatures of carbonates (Infrastructure Priority Programmes)
  - Timescales of processes in magma mush zones – a case study from Pulvermaar, Eifel Volcanic Field, Germany (Research Units)
  - Diffusion-driven isotope fractionation in feldspars, chain silicates and oxides (Research Units)
- Completed projects
  - Hoch-Temperatur-Fraktionierung der Eisenisotope und die Variation der Eisenisotopie im Sonnensystem (Research Grants)
  - Sulfid-Paragenesen in postvariscischen Hydrothermal-Vererzungen des Vorspessarts: Eine Fallstudie zur Verifizierung von Modellen der thermochemischen Sulfat- und Arsenit-Reduktion. (Research Grants)
  - "High field strength" Elemente in Eklogiten als Tracer für die Entwicklung von Kruste und Mantel (Research Grants)
  - Natural variations of the 238U/235U isotope composition: A new paleoredox tracer? (Research Grants)
  - The combined Lu-Hf and Sm-Nd mineral-whole rock, and zircon U-Pb, REE and Hf isotope study of ultra high pressure rocks from the CCSD program (Infrastructure Priority Programmes)
  - Molybdenum isotope signatures of mid-Cretaceous black shales: Implications on the spatial dimension of anoxic events? (Infrastructure Priority Programmes)
  - Nucleosynthetic sources and the age of the solar system: U isotope variations in meteorite components (Priority Programmes)
  - The past and present trace metal budget of the Black Sea - A comparison of the Holocene and Eemian marine ingression (Infrastructure Priority Programmes)
  - The Origin of Metal and Chondrules in CH and CB Chondrites - Evidence from Fe, Ni and Mg isotopes (Priority Programmes)
  - Non-traditional stable isotope fractionation during magmatic differentiation: In situ Fe-Mg-isotope analyses of phenocrysts by femtosecond laser ablation MC-ICP-MS (Infrastructure Priority Programmes)
  - Uranium and V isotope variations in Archean sediments: Evidence for metal mobilization and enzymatic reduction in an overall anoxic world? (Priority Programmes)
  - Fate of tetravalent uranium under reducing conditions (Research Grants)
  - Stromatolites as archives for metal mobilization and early life metabolisms? Uranium and Mo isotope studies of modern and Archean stromatolites and carbonates. (Priority Programmes)
  - 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 (Research Grants)
  - Transport and reactions of light elements (Li, B) in pegmatitic systems under thermal disequilibrium - implications for magmatic/hydrothermal ore deposits (Priority Programmes)
As Leader
- Completed projects
  - Hochauflösendes Sektorfeld ICP-Massenspektrometer in Kombination mit einem Femtosekunden Laser (Major Research Instrumentation)
  - Hochauflösendes Multikollektor Sektorfeld ICP-Massenspektrometer (Major Research Instrumentation)
As Participating Person
- Completed projects
  - Lithiumisotopie planetarer Reservoire (Research Grants)
  - Lithiumisotopie planetarer Reservoire (Research Grants)
  - Lithiumisotope planetarer Reservoire (Research Grants)
  - U-Pb Geochronologie, Hf -Isotopie und Spurenelement-Geochemie an detritischen Zirkonen von Diamant führenden Sedimenten Südafrikas (Research Grants)
  - Chemical zoning in pristine objects of chondrites as archive of the thermal and redox history in the early solar nebula and planetesimals (Priority Programmes)
  - A multiple isotope and trace element approach to constrain the oxygenation and metal cycling of 3.5 to 3.2 Ga paleo-oceans (Infrastructure Priority Programmes)
As Cooperation Partner
- Completed projects
  - Titanium isotope fractionation during lunar magmatism - the importance of redox (Research Grants)
  - Antimony isotope fractionation and thermodynamics during oxidative weathering of stibnite ores (Research Grants)
As Co-Investigator
- Completed projects
  - The petrogenetic link between Kiruna-type ore deposits and their host silicic igneous rocks: the Vergenoeg Fe-F-REE deposit in the Bushveld large igneous province (South Africa). (Research Grants)
  - Li isotope fractionation in magmatic systems: Constraints from in situ analyses on magmatic minerals by femtosecond-laser ablation-MC-ICP-MS (Research Grants)

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