The Mid-Pleistocene landscape history of the Lower Aare Valley with emphasis on subglacial overdeepening

Gegg, Lukas

doi:https://doi.org/10.5194/egqsj-74-125-2025

Articles | Volume 74, issue 2

https://doi.org/10.5194/egqsj-74-125-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/egqsj-74-125-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 74, issue 2

Thesis abstract

|

23 Jul 2025

Thesis abstract |

| 23 Jul 2025

The Mid-Pleistocene landscape history of the Lower Aare Valley with emphasis on subglacial overdeepening

Lukas Gegg

Data sets

Quaternary Boreholes QBO Riniken-1 & -2 (QRIN1 & QRIN2) Data Report Lukas Gegg et al. https://nagra.ch/downloads/arbeitsbericht-nab-18-40/

Quaternary Borehole QBO Gebenstorf-Brüel (QGBR) Data Report Lukas Gegg et al. https://nagra.ch/downloads/arbeitsbericht-nab-19-02/

Quaternary Borehole QBO Gebenstorf-Vogelsang (QGVO) Data Report Lukas Gegg et al. https://nagra.ch/downloads/arbeitsbericht-nab-19-03/

Quaternary Borehole QBO Untersiggenthal (QUST) Data Report Lukas Gegg et al. https://nagra.ch/downloads/arbeitsbericht-nab-19-01/

Morphology of the Overdeepened Gebenstorf-Stilli Trough (Lower Aare Valley) from Seismic Surface Wave Investigations Nagra https://nagra.ch/en/downloads/arbeitsbericht-nab-21-18-2/

Short summary

Drillings, outcrops, and seismic data provide insights into a glacial basin and a former river channel in northern Switzerland. Both are infilled with diverse (glacial, lacustrine, fluvial, colluvial) sediments attributed to three separate glaciations. The depth of the glacial basin depends strongly on the underlying rock type, which together with (hydro)fractures provides evidence on the conditions and erosion processes at the ice–rock interface.