Browsing Bergen Open Research Archive by Author "Torabi, Anita"
Now showing items 1-6 of 6
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Deformation bands in porous sandstones, their microstructure and petrophysical properties
Torabi, Anita (Doctoral thesis, 2008-02-27)Deformation bands are commonly thin tabular zones of crushed or reorganized grains that form in highly porous rocks and sediments. Unlike a fault, typically the slip is negligible in deformation bands. In this dissertation ... -
Do deformation bands matter forflow? Insights from permeability measurements and flow simulations in porous carbonate rocks
Rotevatn, Atle; Fossmark, Heidi Synnøve Solli; Bastesen, Eivind; Thorsheim, Elin; Torabi, Anita (Peer reviewed; Journal article, 2017-02)We investigate the permeability and flow effects of deformation bands in porous granular carbonate rocks in Malta and use results from flow simulations to discuss the practical implications of deformation bands in carbonate ... -
Experimental investigation of deformation mechanisms during shear-enhanced compaction in poorly lithified sandstone and sand
Skurtveit, Elin; Torabi, Anita; Gabrielsen, Roy H.; Zoback, Mark D. (Peer reviewed; Journal article, 2013-08-27)Shear-enhanced compaction in shallow sandstone reservoirs has been investigated in laboratory experiments using high-pressure triaxial testing of poorly lithified sandstone and sand. We have studied the deformation mechanism ... -
Fault core thickness: Insights from siliciclastic and carbonate rocks
Torabi, Anita; Johannessen, Magnus Ueland; Ellingsen, Tor Saltnes Skram (Peer reviewed; Journal article, 2019-06-02)Fault core accommodates intense deformation in the form of slip surfaces and fault rocks such as fault gouge, cataclasite, breccia, lenses, shale smear, and diagenetic features. The complexity and variation in fault core ... -
Sand textural control on shear-enhanced compaction bands in poorly-lithified sandstone
Skurtveit, Elin; Ballas, G.; Fossen, Haakon; Torabi, Anita; Soliva, Roger; Peyret, M. (Peer reviewed; Journal article, 2014)Sand textural control on SECB (shear-enhanced compaction band) formation is analyzed combining field observations, detailed material characterization and mechanical testing for poorly lithified sandstone units in Provence ... -
Sequential growth of deformation bands in carbonate grainstones in the hangingwall of an active growth fault: Implications for deformation mechanisms in different tectonic regimes
Rotevatn, Atle; Thorsheim, Elin; Bastesen, Eivind; Fossmark, Heidi Synnøve Solli; Torabi, Anita; Sælen, Gunnar (Peer reviewed; Journal article, 2016-09)Deformation bands in porous sandstones have been extensively studied for four decades, whereas comparatively less is known about deformation bands in porous carbonate rocks, particularly in extensional settings. Here, we ...