Articles | Volume 66, issue 2
E&G Quaternary Sci. J., 66, 73–89, 2017
E&G Quaternary Sci. J., 66, 73–89, 2017

Research article 20 Dec 2017

Research article | 20 Dec 2017

Palaeoenvironments during MIS 3 and MIS 2 inferred from lacustrine intercalations in the loess–palaeosol sequence at Bobingen (southern Germany)

Christoph Mayr1,2,3, Renate Matzke-Karasz2,3, Philipp Stojakowits4, Sally E. Lowick5, Bernd Zolitschka6, Tanja Heigl2, Richard Mollath1, Marian Theuerkauf1, Marc-Oliver Weckend2, Rupert Bäumler1, and Hans-Joachim Gregor7 Christoph Mayr et al.
  • 1Institute of Geography, Friedrich-Alexander-Universität Erlangen-Nürnberg, Wetterkreuz 15, 91058 Erlangen, Germany
  • 2Palaeontology and Geobiology, Earth and Environmental Sciences, Ludwig-Maximilians-Universität München, 80333 München, Germany
  • 3GeoBio-Center, Ludwig-Maximilians-Universität München, 80333 München, Germany
  • 4Institute of Geography, Universität Augsburg, Alter Postweg 118, 86135 Augsburg, Germany
  • 5Institute for Geological Sciences, Universität Bern, Baltzerstrasse 1 + 3, 3012 Bern, Switzerland
  • 6Universität Bremen, Institute of Geography, Geomorphology and Polar Research (GEOPOLAR), Celsiusstr. 2, 28359 Bremen, Germany
  • 7Daxerstr. 21, 81240 Olching, Germany

Abstract. Recently exposed loess–palaeosol sequences in the northern Alpine foreland close to Bobingen (southern Germany) were investigated with a multi-proxy approach combining isotopic, geochemical, lithological, and micropalaeontological methods. Luminescence ages date the sections into the Middle and Upper Würmian periods corresponding to Marine Isotope Stages 3 and 2. A gleyic soil horizon at the base was dated to 45 ka and provided a palynoflora dominated by Poaceae, Cyperaceae, and Pinus, as well as frequent aquatic taxa. Lacustrine conditions prevailed after the gley formation until 30 ka, providing a comparatively diverse lacustrine fauna dominated by aquatic gastropods and the ostracod species Candona candida. At the transition to the Upper Würm, climatic conditions became harsh, indicated by accelerated deposition of more coarse-grained loess, organic geochemical indicators, and scarceness of biotic remains. Two tundra-gley horizons in the Upper Würm point to short phases of climatic amelioration with higher humidity also evidenced by reoccurrence of ostracod and aquatic gastropod remains. We propose that these climatic ameliorations were coincident with the Greenland interstadials 4 and 2.