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Sedimentological analysis and single-grain luminescence dating of glaciotectonic complexes and tunnel-valley fills in northwestern Germany

The exact number, extent, and chronology of Middle Pleistocene ice advances into northern Central Europe are still debated. To gain insight into the timing of the Elsterian to Saalian ice advances, 25 samples for feldspar single-grain luminescence dating were taken from five different Saalian ice-marginal positions and Elsterian tunnel-valley fills in northwestern Germany. The sampled Elsterian glacigenic sediments comprise subaqueous fans and deltas that were deposited in glacial lakes and underfilled tunnel valleys during ice-margin retreat. The preliminary luminescence ages indicate a correlation with Marine Isotope Stage (MIS) 12. However, the sampled sediments are partly in saturation. This is likely due to subglacial erosion of older sediments. The analyzed Saalian deposits mainly consist of glaciofluvial fans, characterized by sandy sheetflood deposits, alternating with coarser-grained, multilateral, or multistorey channel bodies. Preliminary luminescence ages suggest several ice advances during MIS 8 and MIS 6.

Details

Author
Niklas* von Soest1, Neda Rahimzadeh2, Debra Colarossi3, Falko Malis4, Tobias Lauer5, Yvonne Spychala6, Christian Brandes1, Runa Fälber1, Sumiko Tsukamoto7, Jutta Winsemann1
Institutionen
1Institute of Earth System Sciences, Leibniz Universität Hannover, Germany; 2Institute for Applied Geophysics (LIAG), Hannover, Germany; 3Department of Geography and Earth Sciences, Aberystwyth University, Wales; 4Institute of Earth System Sciences, Leibniz Universität Hannover, Germany;State Authority of Mining, Energy and Geology (LBEG), Hannover, Germany; 5Department of Geosciences, Eberhard Karls Universität Tübingen, Tübingen, Germany; 6Geological Institute, RWTH Aachen University, Aachen, Germany; 7Institute for Applied Geophysics (LIAG), Hannover, Germany;Department of Geosciences, Eberhard Karls Universität Tübingen, Tübingen, Germany
Veranstaltung
Geo4Göttingen 2025
Datum
2025
DOI
10.48380/e10e-4s56

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