Prof. apl. Dr. Jens Fiebig

Stable Isotopes Working Group / AG Stabile Isotope

Working Group Members

  • Niklas Löffler (PhD Student)
  • Christoph Schreiber (Master Student)
  • Techn. Assistant Sven Hofmann
  • Dr. David Bajnai (now at the University of Cologne): ResearchGate link

Research Interests

  • Stable isotopes and clumped isotopes
  • Development of new techniques for the stabie isotope analysis of geo-materials
  • Carbonate (bio)mineralization
  • Reconstruction of paleoenvironmental conditions using traditional stable and clumped isotopes
  • Geochemistry of volcanic gases
  • Origin of hydrocarbons in hydrothermal systems
  • Fluid-rock interactions

Lectures

  • Einführung in die Isotopengeochemie - PDFs: 1 Theorie, 2 Kohlenstoff, 3 Sauerstoff, 4 Schwefel
  • Geochemie der stabilen Isotope bzw. Isotopen- und Spurenelementanalytik I
  • Isotopen- und Spurenelementanalytik II
  • Materialanalytische Methoden

Projects

  • Redox and temperature conditions governing chemical and isotopic equilibration of CO2 and CH4 in volcanic hydrothermal systems (2005-2008; FI-948/1-1)
  • Assessing the geochemical signatures of abiogenically dominated methane sources (2008-2011; FI-948/2-1)
  • Carbonation of porous rocks by interaction with magmatic and hydrothermal fluids - a case study on Unzen volcano (2009-2012; FI-948/3-1)
  • Clumped isotope thermometry applied to bivalve mollusks (2010-2014; FI-948/4-1)
  • Bulk carbon and clumped isotope composition of N-alkanes in volcanic-hydrothermal emissions (2013-2015; FI-948/6-1)
  • Empirical and experimental calibration of a clumped isotope (paleo)thermometer for bioapatites (2014-2015; FI-948/7-1)
  • Clumped isotopes in Brachiopods as an indicator of seawater and diagenetic temperatures (since 2015; ESR08, ITN Baseline Earth, Horizon 2020, EU) Link
  • Hydrocarbons in Icelandic volcanic-hydrothermal discharges: An inventory of concentrations and preliminary bulk carbon, radiocarbon and clumped isotope data (since 2015; FI-948/8-1)
  • Identifying the processes that govern the hydrogen isotopic composition of H2 and CH4 in fumarolic emission: a case study from Nisyros, Greece (since 2017; FI-948/9-1)

Links