Browsing Institutt for geofag by Author "Zertani, Sascha"
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Michalchuk, Stephen Paul; Zertani, Sascha; Renard, Francois; Fusseis, Florian; Chogani, Alireza; Plümper, Oliver; Menegon, Luca (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Abstract Earthquake‐induced fracturing of the dry and strong lower crust can transiently increase permeability for fluids to flow and trigger metamorphic and rheological transformations. However, little is known about the ...
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Zertani, Sascha; John, Timm; Tilmann, Frederik; Motra, Hem B.; Keppler, Ruth; Andersen, Torgeir Bjørge; Labrousse, Loic (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Subduction zone processes and the resulting geometries at depth are widely studied by large- scale geophysical imaging techniques. The subsequent interpretations are dependent on information from surface exposures of fossil ...
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Zertani, Sascha; Vrijmoed, Johannes Christiaan; Tilmann, Frederik; John, Timm; Andersen, Torgeir Bjørge; Labrousse, Loic (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)eismological studies of large-scale processes at convergent plate boundaries typically probe lower crustal structures with wavelengths of several kilometers, whereas field-based studies typically sample the resulting ...
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Protracted localization of metamorphism and deformation in a heterogeneous lower-crustal shear zone Zertani, Sascha; Menegon, Luca; Pennacchioni, Giorgio; Buisman, Iris; Corfu, Fernando; Jamtveit, Bjørn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Deformation of the continental crust is influenced by the pre-existing structural framework, fluid availability, strain rate, and pressure-temperature conditions. We investigate the evolution of a large (hundreds-of-meters ...
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Zertani, Sascha; John, Timm; Brachmann, Caroline; Vrijmoed, Johannes Christiaan; Plümper, Oliver (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Abstract Fluid flow in crystalline rocks in the absence of fractures or ductile shear zones dominantly occurs by grain boundary diffusion, as it is faster than volume diffusion. It is, however, unclear how reactive fluid ...
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Zertani, Sascha; Labrousse, Loic; John, Timm; Andersen, Torgeir Bjørge; Tilmann, Frederik (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)The island of Holsnøy in the Bergen Arcs, which belong to the Caledonides of western Norway, represents an excellent example of how fluid‐induced eclogitization modifies material deeply buried by subduction and continental ...