Ruprecht-Karls-Universität Heidelberg

Physics of Isotopologues

Dr. Tobias Kluge


The research of Dr. Tobias Kluge has its major focus on the investigation of multiply-substituted isotopologues, the understanding of physical processes that lead to isotope fractionation, and the application of new proxies technique for paleoclimate reconstruction. Amongst others, carbonate clumped isotopes and noble gases in fluid inclusions are promising new techniques for the assessment of past climate variations that are applied in this research group.

The research group is part of the Heidelberg Graduate School of Fundamental Physics (HGSFP).

The research group is funded by the Excellence Initiative of DFG (German Research Foundation) and BMBF (German Ministry of Education and Research). The Excellence Intiative was intiated to foster world-class institutions and to promote cutting edge research.


  • Group-related research in the media:

    Paleoclimate research

    1) Prof. Dr. Neumann presents on ongoing interdisciplinary, collaborative research on climatic extreme events using speleothems from the Frankonian Alb and historical documents from Nuremberg: Contribution Deutsches Klima Konsortium
    The article has been published online on the pages of the Deutsches Klima Konsortium. Partners are from Heidelberg University (Institute of Environmental Physics: Dr. T. Kluge, Historical seminar: Maxmillian Schuh, Gabriel Meyer) and Karlsruhe Institue of Technology (Institute of Applied Geosciences: Prof. Dr. Thomas Neumann, Dr. Elisabeth Eiche, Arno Hartmann, Philipp Holz). Involved is also Dr. Dana Riechelmann from Mainz University and Prof. Dr. Detlev Richter from Ruhr-University Bochum. Funding was provided 2016 by a HEiKA grant.

    2) Floods and other climatic extremes in the historical past. What can we learn from geological and historical archives and the related societal responses? a video summary
    The video has been prepared in the context of the Heidelberg Center of the Environment.

    3) Speleothems as paleoclimate archive - state of the art and new approaches: a review in Ruperto Carola

  • Speleothem-specific session at the upcoming EGU 2017
    The speleothem archive: understanding processes and interpreting Quaternary climate change (CL 1.13)
    Convener: Marc Luetscher, Co-Conveners: Michael Deininger, Tobias Kluge, Jens Fohlmeister
    Session details: link

  • Multi-proxy and multi-archive hydrological paleoclimate session at the upcoming Goldschmidt conference 2017
    Improving our Understanding of Hydroclimate Variability Using Paleoclimate Records (session 17d)
    Convener: David McGee, Stacy Carolin, Charlotte Skonieczny, Enno Schefuss, Tobias Kluge, Elisabeth Eiche
    Session details: link (from there select 17d)

  • Installation of a new isotope ratio mass spectrometer (2016):

    Thermo Scientific MAT 253 Plus
    The new mass spectrometer of the team physics of environmental archives will be used for the high-precision analysis of clumped isotopes and standard stable isotopes of carbonates. Impressions from the installation in March 2016 (positioning of the magnet) and the setup in the laboratory are shown below.

    • Approval of two research projects 2016:

      HEiKA project "Check Extrema", interdisciplinary research project on climatic extreme events investigated from Natural and Historical Sciences perspectives. Funded by the Heidelberg-Karlsruhe Research Partnership of Heidelberg University, and Karlsruhe Institute of Technology (KIT); Germany
      Further information: HEiKA web site.
      Short video on the project outline, background details and first insights.

      DFG project "Water isotopes in fluid inclusions of speleothems". Funded by the German Science Foundation DFG.
      Further information: DFG web site.

    • New publications

      Garcia del Real, P., Maher, K., Kluge, T., Bird, D.K., Brown, G.E.B. Jr., John, C.M., 2016. Clumped-isotope thermometry of magnesium carbonates in ultramafic rocks , Geochimica et Cosmochimica Acta, 193, 222-250.

      Ritter, A.-C., Kluge, T., Berndt, J., Richter, D.K., John, C.M., Bodin, S., Immenhauser, A., 2015. Application of redox sensitive proxies and carbonate clumped isotopes to Mesozoic and Paleozoic radiaxial fibrous calcite cements , Chemical Geology, 417, 306-321.

      Kele, S., Breitenbach, S.F.M., Capezzuoli, E., Nele Meckler, A., Ziegler, M., Millan, I.M., Kluge, T., Deák, J., Hanselmann, K., John, C.M., Yan, H., Liu, Z., Bernasconi, S.M, 2015. Temperature dependence of oxygen- and clumped isotope fractionation in carbonates: a study of travertines and tufas in the 6-95°C temperature range, Geochimica et Cosmochimica Acta, 168, 172-192.

      T. Kluge, C.M. John, 2015. Technical Note: A simple method for vaterite precipitation for isotopic studies: implications for bulk and clumped isotope analysis, Biogeosciences, 12, 3289-3299.

      T. Kluge, C.M. John, 2015. Effects of brine chemistry and polymorphism on clumped isotopes revealed by laboratory precipitation of mono- and multiphase calcium carbonates, Geochimica et Cosmochimica Acta, accepted manuscript.

      T. Kluge, C.M. John, A.-L. Jourdan, S. Davis, J. Crawshaw, 2015. Laboratory calibration of the calcium carbonate clumped isotope thermometer in the 25-250°C temperature range , Geochimica et Cosmochimica Acta, 157, 213-227.

      A. Geske, R.H. Goldstein, V. Mavromatis, D.K. Richter, D. Buhl, T. Kluge, C.M. John, A. Immenhauser, 2015. The magnesium isotope (δ26Mg) signature of dolomites , Geochimica et Cosmochimica Acta, 149, 131-151.

    Group members

    • Dr. Tobias Kluge, Research group leader

      Institute of Environmental Physics
      Im Neuenheimer Feld 229, Room 3.30
      Phone +49 (0)6221-54-6511

    • Ivan Prokhorov, PhD student
    • Therese Weißbach, PhD student
    • Maximilian Kalb, Master student
    • David Schäfer, Master student
    • Laura Lüttkes, Bachelor/Project student
    • Tobias Schmitt, Bachelor/Project student
    • Sabrina Mack, Staatsexamenskandidatin

    Open positions

    Several research opportunities for master and bachelor students are currently available: Link



    For the full publication list see: Link
    Conference contributions

    Conference contributions

    Conference contributions of the research group are summarized here: Link




    zum Seitenanfang
    Seitenbearbeiter: webmaster