Geomorphic response to the Lateglacial-Holocene transition in high Alpine regions (Sanetsch Pass, Swiss Alps) - IRSTEA - Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (<b>anciennement Cemagref</b>) Accéder directement au contenu
Article Dans Une Revue Boreas Année : 2021

Geomorphic response to the Lateglacial-Holocene transition in high Alpine regions (Sanetsch Pass, Swiss Alps)

Résumé

Geomorphic response to the Lateglacial-Holocene transition in high Alpine regions (Sanetsch Pass, Swiss Alps) Several palaeoclimatic archives have documented the pronounced climatic and environmental change associated with the Lateglacial-Holocene transition in the European Alps. However, the geomorphic response to this major environmental transition has been only punctually investigated. In this study, we propose a detailed reconstruction of post-Last Glacial Maximum palaeo-environmental conditions and geomorphic connectivity in the Sanetsch Pass area (2252 m a.s.l., western Swiss Alps), based on a multi-method approach combining geomorphological and sedimentological field investigations with quantitative sedimentology and geochronology. Samples for sediment characterization (grain-size, micromorphology and X-Ray diffraction) and geochronology (optically stimulated luminescence and 10 Be surface exposure dating) were collected from three representative landforms of the study area: a high-elevation silty deposit covered by patterned ground, an alluvial fan and a hummocky moraine covered by rockfall deposits. Our multi-method outcomes reveal the geomorphic history of the three deposits and
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Dates et versions

hal-03388257 , version 1 (20-10-2021)

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Elena Serra, Pierre G Valla, Natacha Gribenski, Fabio J Guedes Magrani, Julien Carcaillet, et al.. Geomorphic response to the Lateglacial-Holocene transition in high Alpine regions (Sanetsch Pass, Swiss Alps). Boreas, 2021, 50 (1), pp.242-261. ⟨10.1111/bor.12480)⟩. ⟨hal-03388257⟩
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