Articles | Volume 71, issue 2
E&G Quaternary Sci. J., 71, 163–190, 2022
https://doi.org/10.5194/egqsj-71-163-2022
E&G Quaternary Sci. J., 71, 163–190, 2022
https://doi.org/10.5194/egqsj-71-163-2022
Research article
01 Sep 2022
Research article | 01 Sep 2022

Two glaciers and one sedimentary sink: the competing role of the Aare and the Valais glaciers in filling an overdeepened trough inferred from provenance analysis

Michael A. Schwenk et al.

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Cited articles

Andò, S.: Gravimetric Separation of Heavy Minerals in Sediments and Rocks, Minerals, 10, 273, https://doi.org/10.3390/min10030273, 2020.​​​​​​​ a
Anfinson, O. A., Stockli, D. F., Miller, J. C., Möller, A., and Schlunegger, F.: Tectonic exhumation of the Central Alps recorded by detrital zircon in the Molasse Basin, Switzerland, Solid Earth, 11, 2197–2220, https://doi.org/10.5194/se-11-2197-2020, 2020. a, b
Bachmann, I.: Die Kander im Berner Oberland ein ehemaliges Gletscher- und Flussgebiet, Dalp'sche Buch- und Kunsthandlung, Bern, 1870. a
Baltzer, A.: Der diluviale Aargletscher und seine Ablagerungen in der Gegend von Bern mit Berücksichtigung des Rhonegletschers, in: Der diluviale Aargletscher und seine Ablagerungen in der Gegend von Bern mit Berücksichtigung des Rhonegletschers, Beiträge zur Geologischen Karte der Schweiz Lieferung 30, Schmid, Francke & Co., Bern, 1896. a, b, c, d, e
Bandou, D., Schlunegger, F., Kissling, E., Marti, U., Schwenk, M., Schläfli, P., Douillet, G., and Mair, D.: Three-dimensional gravity modelling of a Quaternary overdeepening fill in the Bern area of Switzerland discloses two stages of glacial carving, Sci. Rep., 12, 1441, https://doi.org/10.1038/s41598-022-04830-x, 2022. a
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Short summary
We investigated the origin of glacial sediments in the Bern area to determine their route of transport either with the Aare Glacier or the Valais Glacier. These two ice streams are known to have joined in the Bern area during the last major glaciation (ca. 20 000 years ago). However, little is known about the ice streams prior to this last glaciation. Here we collected evidence that during a glaciation about 250 000 years ago the Aare Glacier dominated the area as documented in the deposits.