Dr. Ilka Kleinhanns

(married Schönberg)

Universität Tübingen GUZ
Schnarrenbergstrasse 94-96
72076 Tübingen

Office: Room 6U05, GUZ

Phone: +49-(0)7071-29-78908
Fax: +49-(0)7071-29-3060
Mail: kleinhanns(at)ifg.uni-tuebingen.de

Fields of study

  • Igneous isotope geochemistry


  • Crust-mantle interaction in the Massif Central (France)
  • high-T stable isotope fractionation of mantle processes and melt formation (Barberton Greenstone belt, South Africa & Pyrenees, France)
  • Chromite formation and magmatic history of the Bushveld Complex (South Africa).

Short CV

since 2010

Research Scientist at the Isotope Geochemistry Group, University of Tübingen, Germany


Associate Professor for Geochemistry at the University of Bergen, Norway


Research Fellow and Lab Manager of the Radiogenic Isotope Facilities at the Geoscience Centre, University of Göttingen, Germany


PhD at the Institute of Geological Sciences, University of Bern, Switzerland


Diploma in Geology/Palaeontology at the Geoscience Centre, University of Göttingen, Germany


2021 - today

  • Wagner JL, Kleinhanns IC, Weber N, Babechuk MG, Hofmann A, Schoenberg R (2021): Coupled stable chromium and iron isotopic fractionation tracing magmatic mineral crystallization in Archean komatiite-tholeiite suites. Chemical Geology https://doi.org/10.1016/j.chemgeo.2021.120121
  • Kleinhanns IC, Nägler TF, Villa IM, Kramers JD (2021): Age disequilibrium between zircon and their granitoid hosts caused by intracrustal reworking: Nd-Hf-Ar isotope evidence of Archaean Granitoids from Barberton Mountain Land (Kaapvaal craton, South Africa). Chemical Geology https://doi.org/10.1016/j.chemgeo.2021.120129
  • Wegwerth A, Plessen B, Kleinhanns IC, Arz HW (2021): Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics. Communications Earth & Environment 2, 63 (2021). doi.org/10.1038/s43247-021-00129-3

2016 - 2020

  • André L, Abraham K, Hofmann A, Monin L, Kleinhanns IC, Foley S (2019): Early continental crust generated by reworking of basalts variably silicified by seawater. Nature Geoscience, doi: 10.1038/s41561-019-0408-5.
  • Babechuk MG, Weimer NE, Kleinhanns IC, Eroglu SE, Swanner ED, Kenny GG, Kamber BS, Schoenberg R (2019): Pervasivelyanoxic surface conditions at the onset of the Great Oxidation Event: New multi-proxy constraints from the Cooper Lake paleosol. Precambrian Research 323: 126-163.
  • Brodbeck M, Ubide T, Kleinhanns IC, Schoenberg R, Kamber BS (2019): Quantitative data extraction from Orthopyroxene trace element maps and its potential to examine the formtation of the UG2 unit, Bushveld complex. Minerals (9) 73; doi:10.3390/min9020073.
  • Walter BF, Gerdes A, Kleinhanns IC, Dunkl I, von Eynatten H, Kreissl S, Markl G (2018):The connection between hydrothermal fluids, mineralization, tectonics and magmatism in a continental rift setting: Fluorite Sm-Nd and hematite and carbonates U-Pb geochronology from the Rhinegraben in SW Germany. Geochimica et Cosmochimica Acta 240: 11-42.
  • Eroglu S, Schoenberg R, Pascarelli S, Beukes NJ, Kleinhanns IC, Swanner ED (2018): Open ocean vs. continentally-derived iron cycles along the Neoarchean Campbellrand-Malmani Carbonate platform, South Africa. American Journal of Science 318: 367- 408.
  • Albut G, Babechuk MG, Kleinhanns IC, Benger M, Beukes NJ, Steinhilber B, Smith AJB, Kruger SJ, Schoenberg R (2018) Modern rather than Mesoarchaean oxidative weathering responsible for the heavy stable Cr isotopic signatures of the 2.95 Ga old Ijzermijn iron formation (South Africa). Geochimica et Cosmochimica Acta 228: 157-189.
  • Babechuk GB, Kleinhanns IC, Reitter E, Schoenberg R (2018): Kinetic stable Cr isotopic fractionation between aqueous Cr(III)-Cl-H2O complexes at 25 °C: implications for Cr(III) mobility and isotopic variations in modern and ancient natural systems. Geochimica Cosmochimica Acta 222: 383-405.
  • Wille M, Babechuk MG, Kleinhanns IC, Stegmaier J, Suhr N, Widdowson M, Kamber BS, Schoenberg R (2018): Silicon and chromium stable isotopic systematics during basalt weathering and lateritisation: A comparison of variably weathered basalt profiles in the Deccan Traps, India. Geoderma 314:190-204.
  • Wu W, Swanner ED, Kleinhanns IC, Schoenberg R, Pab Y, Kappler A (2017): Fe isotope fractionation during Fe(II) oxidation by the marine photoferrotroph Rhodovulum iodosum in the presence of Si - implications for Precambrian iron formation deposition. Geochimica et Cosmochimica Acta 211: 307-321.
  • Swanner ED, Bayer T, Wu W, Hao L, Obst M, Sundman A, Byrne JM, Michel M, Kleinhanns IC, Kappler A, Schoenberg R (2017): Iron isotope fractionation during Fe(II) oxidation mediated by the oxygen-producing marine cyanobacterium Synechococcus PCC 7002. Environmental Science & Technology 51(9): 4897-4906.
  • Babechuk MG, Kleinhanns IC, Schoenberg R (2017): Chromium geochemistry of the ca. 1.85 Ga Flin Flon paleosol. Geobiology 15, 30-50.
  • Schoenberg R, Merdian A, Holmden C, Kleinhanns IC, Hassler K, Wille M, Reitter E (2016): The stable Cr isotopic compositions of chondrites and silicate planetary reservoirs. Geochimica et Cosmochimica Acta 183, 14-30.

2011 - 2015

  • Jacobs J, Elburg M, Laeufer A, Kleinhanns IC, Henjes-Kunst F, Estrada S, Ruppel AS, Damaske D, Montero P, Bea F (2015): Two distinct Late Mesoproterozoic/Early Neoproterozoic basement provinces in central/eastern Dronning Maud Land, East Antarctica: The missing link, 15-21 degrees E. Precambrian Research 265, 249-272.
  • Kleinhanns IC, Becker T, Wilsky F, Nolte N, Hansen BT, Fliegel D and Klemd R (2015): U-Pb zircon ages and (isotope) geochemical signatures of the Kamanjab Inlier (NW-Namibia): constraints on Paleoproterozoic crustal evolution along the southern Congo craton. Geological Society, London, Special publications 389, 165-195.
  • Kleinhanns IC, Whitehouse MJ, Nolte N, Baero W, Wilsky F, Hansen BT, Schoenberg R (2015): Mode and timing of granitoid magmatism in the Västervik area (SE Sweden, Baltic Shield): Sr-Nd isotope and SIMS U-Pb age constraints. Lithos 212-215, 321-337.
  • Hansen BT, Wemmer K, Putthapiban P, Kleinhanns IC, Wilsky F (2014): Do U/Pb-SHRIMP Dating and Pb Stepwise Leaching (PbSL) Analyses Confirm the Lack of Precambrian Basement Outcrops in Thailand?. Open Journal of Geology 4: 505-517.
  • Wegwerth A, Dellwig O, Kaiser J, Ménot G, Bard E, Shumilovskikh L, Schnetger B, Kleinhanns IC, Wille M, Arz HW (2014): Meltwater events and the Mediterranean reconnection at the Saalian-Eemain transition in the Black Sea. Earth and Planetary Science Letters 404, 124-135.
  • Villa IM, Bucher S, Bousquet R, Kleinhanns IC, Schmid S (2014): Dating polygenetic metamorphic assemblages along a transect across the Western Alps. Journal of Petrology 55(4): 803-830.
  • Wille M, Nebel O, Van Kranendonk MJ, Schoenberg R, Kleinhanns IC, Ellwood MJ (2013): Mo-Cr isotope evidence for a reducing Archean atmosphere in 3.46-2.76 Ga black shales from the Pilbara, Western Australia. Chemical Geology 340: 68-76.
  • He Y, Li S, Hoefs J, Kleinhanns IC (2013): Sr-Nd-Pb isotopic compositions of early Cretaceous granitoids from the Dabie orogen: Constraints on the recycled lower continental crust. Lithos 156-159, 204-217.
  • Kleinhanns IC, Fischer-Gödde M, Hansen BT (2012): Sr-Nd isotope and geochemical characterisation of the Paleoproterozoic Västervik Formation (Baltic Shield, SE-Sweden): a southerly exposure of Svecofennian metasiliciclastic sediments. International Journal of Earth Sciences 101 (1): 39-55.
  • Nolte N, Kleinhanns IC, Baero W, Hansen BT (2011): Petrography and whole-rock geochemical characteristics of Västervik granitoids to syenitoids, southeast Sweden: constraints on petrogenesis and tectonic setting at the southern margin of the Svecofennian domain. GFF 133 (3-4): 173-196.
  • Martínez Dopico CI, López de Luchi MG, Rapalini AE, Kleinhanns IC (2011): Crustal segments in the North Patagonian Massif, Patagonia: An integrated perspective based on Sm-Nd isotope systematic. Journal of South American geology. 31, 324 – 341.

2006 - 2010

  • Be'eri-Shlevin Y, Katzir Y, Blichert-Toft J, Kleinhanns IC, Whitehouse MJ (2010): Nd-Sr-Hf-O isotope provinciality in the northernmost Arabian-Nubian Shield: implications for crustal evolution. Contributions to Mineralogy and Petrology 160, 181 – 201.
  • Be’eri-Shlevin Y, Katzir Y, Whitehouse MJ, Kleinhanns IC (2009): Contribution of pre Pan-African crust to formation of the Arabian Nubian Shield: new SIMS U-Pb and O studies of zircon. Geology 37, 899-902.
  • Rufer D, Buettner A, Kleinhanns IC, Villa IM (2007): Yes there is, but why would anybody care? DISCUSSION. Lithos 95 (3-4), 462-464.

2002 - 2005

  • Buettner A, Kleinhanns IC, Rufer D, Hunziker JC, Villa IM (2005): Magma generation at the easternmost section of the Hellenic arc: Hf, Nd, Pb and Sr isotope geochemistry of Nisyros and Yali volcanoes (Greece). Lithos 83 (1-2), 29-46.
  • Kleinhanns IC, Kramers JD, Kamber BS (2003): Importance of Water for Archaean Granitoid Petrology: a comparative study of TTG and potassic granitoids from Barberton Mountain Land, South Africa. Contributions to Mineralogy and Petrology 145, 377-389.
  • Kleinhanns IC, Kreissig K, Nägler ThF, Kamber BS, Meisel T, Kramers JD (2002): Combined chemical separation of Lu, Hf, Sm, Nd, and REEs from a single rock digest: Precise and accurate isotope determination of Lu-Hf and Sm-Nd using multicollector-ICPMS. Analytical Chemistry 74 (1), 67-73.