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Earth Sciences at the University of Fribourg

Bern-Fribourg Master in Earth Sciences

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Details of Master Thesis Topic (Module D):
Microstructural analysis in sedimentary rocks of the Mont Terri Rock Laboratory subjected to high-pressure squeezing experiments

Master Thesis title: Microstructural analysis in sedimentary rocks of the Mont Terri Rock Laboratory subjected to high-pressure squeezing experiments
Description:Applying high pressure on a water-saturated sample of sedimentary rock in laboratory experiments leads to the expulsion of pore water. This so-called squeezing technique has become a useful tool to sample pore waters from low-permeability rocks for chemical and isotopic analysis. The details of the deformation process and associated water liberation on the sample and microscopic scales are currently unknown. The thesis focuses on the microstructural aspects of the squeezing process up to 500 MPa, during which the rock is deformed by cataclasis. The research objective is the study of the deformation style and associated mechanisms on different scales (µm–dm) and the behaviour of the various constituents of the rock (clays, carbonates, quartz) during deformation. Different lithologies with contrasting mechanical properties (shales, marls, limestones) will be studied. Thin-section and scanning-electron microscope analysis of squeezed and unsqueezed rocks will be the primary analytical techniques. Suitable samples are available from the Mont Terri Rock Laboratory. With this scope, aspects from fundamental but also applied geo- and materials science are covered.
Advisors:Prof. Marco Herwegh, Prof. Martin Mazurek
Specialities:EM, ERG, GEOL
University: BE

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University of Fribourg | Dépt. Géosciences ; Ch. du Musée 6 - Pérolles ; CH-1700 Fribourg |
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