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The Nantois section at the westernmost part of the Eurasian loess belt – First multi-proxy precipitation estimates for the Saalian and Eemian and geomorphological/sedimentological inferences

Changes in continental precipitation patterns may drastically reshape landscapes and living-environments of humans in terms of geomorphological settings and sedimentological regimes. Dust based quaternary sediment archives like widespread loess-palaeosol-sequences (LPS) record climatic changes and provide key geomorphological and sedimentological information. These records are also essential for comprehending precipitation changes across continents and associated terrestrial system responses. Currently, precipitation quantities strongly vary along a W-E gradients across Europe, but this pattern is likely to have changed dramatically in the past – especially when the Nordic ice-sheets started to grow upon their massive extend during their glacial maxima. Here we present first precipitation estimates considering a suite of established chemical (δ13C of the total organic carbon) and magnetic measures for the Nantois section (northern Brittany, France) covering the Saalian (penultimate glaciation) with its cold and harsh conditions and the Eemian (last interglacial), when the climate was globally warmer than today. We discuss our sedimentological results considering the special geomorphological setting of the Nantois section and its role regarding the reaction to dry-moister cycles. Based on this, we demonstrate the advantage of combining sedimentological and geomorphological perspectives when aiming at a more holistic landscape understanding.

Details

Author
Mathias* Vinnepand1, Pierre Antoine2, Kamila Ryzner3, Hannah Müssener3, Yoann Chantreau4, Simon Puaud4, Laelia Moreau5, Guillaume Guérin6, Carlos Arce6, Pierre Dietrich6, Marine Laforge4, Christian Zeeden3, Mathieu Martinez6
Institutionen
1Géosciences Rennes, Université de Rennes, Campus Beaulieu, Bâtiment 15, Rennes, France;LIAG-Institute for Applied Geophysics, Stilleweg 2, Hannover, Germany; 2Laboratoire de Géographie Physique, Université Paris 1 Panthéon-Sorbonne, Meudon, France; 3LIAG-Institute for Applied Geophysics, Stilleweg 2, Hannover, Germany; 4Centre de Recherche en Archéologie, Archéosciences, Histoire (CReAAH), Université de Rennes, Campus Beaulieu, Bâtiment 24/25 Rennes, France; 5Laboratoire Culture, Environnements, Préhistoire, Antiquité, Moyen-âge (CEPAM), Université Nice Côte d’Azur, Nice, France.; 6Géosciences Rennes, Université de Rennes, Campus Beaulieu, Bâtiment 15, Rennes, France
Veranstaltung
Geo4Göttingen 2025
Datum
2025
DOI
10.48380/cga8-5k44

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