Various excursions are organized by different sections of the SGS. These trips are generally restricted to members of the SGS. If you would like to participate in any of the excursions, kindly register to the SGS.
Swiss Tectonic Studies Group Excursion 2023
The easternmost Jura Mountains revisited following Nagra’s regional exploration: Extent, Age and Impact
This years STSG excursion will lead into the easternmost Jura mountains, a region whose tectonics have been intensively investigated by Nagra including field work, seismic surveying and deep exploration drilling. During the first day, some key outcrops around Brugg/Baden will be visited to discuss structure, extent and age of this part of the thrust-belt. On the second day, Nagra will kindly provide access to its corelab where we will be able to study drillcores from the evaporitic section representing the décolllement horizon of the thrust belt and the above-lying units including the Opalinus Clay.
Swiss Tectonics Studies Group, Field excursion 2022
Relations between the Middle and Upper Penninic nappes (Mont-Fort and Tsaté nappes) between the Val de Bagnes and Mattertal.
Friday 26.08.2022 – Sunday 28.08.2022
Lead: Adrien Pantet and Jean-Luc Epard
Meeting point: Friday 26.08.2022, Martigny station, 09h00
End of Field trip: Sunday 28.08.2022, Sion station, around 18h00
Limited to 24 persons. Transportation in the field will be provided by minibuses (UNIL).
Program: In the Western Swiss Alps of Valais, some series close to the boundary between the Middle and Upper Penninics raise problems regarding their tectonic and paleogeographic attribution. These include the series of Mesozoic rocks originally associated to a continental basement that constitute the "Faisceau Vermiculaire" of Argand, the “Cimes-Blanches” nappe or the Frilihorn series. Their relationship with the "Schistes Lustrés" of the Tsaté nappe is also problematic. New data collected between the Val de Bagnes and Zermatt allow to revise some tectonic and paleogeographic attributions and to present a new tectonic model for the area.
Day 1: Val de Bagnes, Mauvoisin. Evolène series (Mont-Fort) and Tsaté nappe
Day 2: Val d’Hérens, Evolène area.
Day 3: Täschtal: Alphubel anticline and its sedimentary cover. Relations between folds associated to nappe emplacement and the early Mischabels backfold.
Follow the link below for more information.
STSG Excursion 2021 to the Aar Massif
The Swiss Tectonic Studies Group excursion visited the Aar Massif from 27-29 August, 2021.
The excursion was led by Lukas Nibourel, Marco Herwegh and Alfons Berger. Lukas Nibourel completed his PhD in Geology at the University of Bern in 2019. He studied the structural and thermo-kinematic evolution of the eastern Aar Massif in the Swiss Central Alps, and now works at the Georesources Switzerland Group at the Department of Earth Sciences, ETH Zürich.
The participants visited spectacular outcrops, mostly along the basement-cover contact, to discuss the structural and thermo-kinematic evolution of the eastern Aar Massif. The massif's deformation and exhumation history was reconstructed based on field observations and low-T thermochronological data. The influence of inherited normal faults on the distribution and geometry of Alpine compressional fault zones was another important topic.
The excursion guide is available on request at .