E&G Quaternary Sci. J., 66, 73-89, 2017
https://doi.org/10.5194/egqsj-66-73-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
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 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.

Citation: Mayr, C., Matzke-Karasz, R., Stojakowits, P., Lowick, S. E., Zolitschka, B., Heigl, T., Mollath, R., Theuerkauf, M., Weckend, M.-O., Bäumler, R., and Gregor, H.-J.: Palaeoenvironments during MIS 3 and MIS 2 inferred from lacustrine intercalations in the loess–palaeosol sequence at Bobingen (southern Germany), E&G Quaternary Sci. J., 66, 73-89, https://doi.org/10.5194/egqsj-66-73-2017, 2017.
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