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Université de Fribourg

Quantification of Lithological Heterogeneity Within Opalinus Clay : Toward a Uniform Subfacies Classification Scheme Using a Novel Automated Core Image Recognition Tool

Lauper, Bruno ; Zimmerli, Géraldine N. ; Jaeggi, David ; Deplazes, Gaudenz ; Wohlwend, Stephan ; Rempfer, Johannes ; Foubert, Anneleen

In: Frontiers in Earth Science, 2021, vol. 9, p. 645596

The Opalinus Clay is notable in Switzerland as being the selected host rock for deep geological disposal of radioactive waste. Since the early 1990’s, this argillaceous mudstone formation of Jurassic age has been intensively studied within the framework of national and international projects to characterize its geological, hydrological, mechanical, thermal, chemical, and biological...

Université de Fribourg

Sedimentary record of arc-continent collision along mesozoic SW north america (Siuna belt, Nicaragua)

Andjić, Goran ; Escuder‐Viruete, Javier ; Baumgartner‐Mora, Claudia ; Baumgartner, Peter O. ; Mitchell, Simon F. ; Caron, Michèle ; Caus, Esmeralda

In: Tectonics, 2019, vol. 38, no. 12, p. 4399–4425

The western margin of the Caribbean Plate is a typical example where oceanic and continental terranes have amalgamated by subduction, collision, and strike‐slip processes. The boundaries between these blocks, as well as their tectonostratigraphic records, are generally covered by younger deposits and dense tropical vegetation, which may hamper reconstructing the accretionary evolution of...

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

Integrated bio- and cyclostratigraphy of Middle Triassic (Anisian) ramp deposits, NW Bulgaria

Ajdanlijsky, George ; Strasser, André ; Götz, Annette E.

In: Geologica Carpathica, 2019, vol. 70, no. 4, p. 325–354

A cyclostratigraphic interpretation of peritidal to shallow-marine ramp deposits of the early Middle Triassic (Anisian) Opletnya Member exposed in outcrops along the Iskar River gorge, NW Bulgaria, is presented. Based on facies trends and bounding surfaces, depositional sequences of several orders can be identified. New biostratigraphic data provide a time frame of the studied succession with...

Université de Fribourg

Tectonics controls on fluvial landscapes and drainage development in the westernmost part of Switzerland: Insights from DEM-derived geomorphic indices

Radaideh, Omar M. A. ; Mosar, Jon

In: Tectonophysics, 2019, vol. 768, p. 228179

This work focuses particularly on the geomorphological evidence for the tectonic controls on the development of the present-day fluvial landscapes in the westernmost part of Switzerland. The tectonic deformation was evaluated on the basis of a combined analysis of several classical geomorphic indices (hypsometric curves and integrals, transverse topographic symmetry index, and channel's...

Consortium of Swiss Academic Libraries

Cretaceous syn-sedimentary faulting in the Wildhorn Nappe (SW Switzerland)

Cardello, G. ; Mancktelow, Neil

In: Swiss Journal of Geosciences, 2014, vol. 107, no. 2-3, p. 223-250