Université de Fribourg

Tectonics of the Neuchâtel Jura Mountains: insights from mapping and forward modelling

Rime, Valentin ; Sommaruga, Anna ; Schori, Marc ; Mosar, Jon

In: Swiss Journal of Geosciences, 2019, vol. 112, no. 2, p. 563–578

This study focuses on a geological section in the Jura Mountains across the villages of Travers, La Brévine in Switzerland, and Morteau in France. Field mapping was conducted to complement and densify existing data. A kinematically and geometrically consistent forward model has been developed to understand and interpret the observed surface structures. The proposed solution features a...

Université de Fribourg

Metamorphic core complexes and gneiss-cored culminations along the Mid-Norwegian margin : an overview and some current ideas

Osmundsen, Per Terje ; Braathen, Alvar ; Sommaruga, Anna ; Skilbrei, Jan Reidar ; Nordgulen, Øystein ; Roberts, David ; Andersen, Torgeir B. ; Olesen, Odleiv ; Mosar, Jon

In: Norwegian Petroleum Society Special Publications, 2005, vol. 12, p. 29-41

From the Palacozoic to the Cretaceous, crustal thinning in the Mid Norway area was associated with the denudation of gneiss-cored culminations and metamorphic core complexes in the footwalls of major extensional faults. The development of the culminations led to warping and deactivation of early detachments, to the nucleation of new faults in more distal positions and to the exhumation of...

Université de Fribourg

Greenland – Norway separation: A geodynamic model for the North Atlantic

Mosar, Jon ; Eide, Elizabeth A. ; Osmundsen, Per Terje ; Sommaruga, Anna ; Torsvik, Trond H.

In: Norwegian Journal of Geology, 2002, vol. 82, p. 282-299

Combining information from onshore and offshore Mid-Norway, we propose a structural model for the Scandinavian North Atlantic passive margin from Permo- Carboniferous through Present. We re-examine the role of post-Permo-Carboniferous normal faults and define an innermost boundary fault system forming the continentward limit of the rifted margin. Crustal-scale cross-sections of the Greenland-...