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dc.contributor.authorMienert, Jurgeneng
dc.contributor.authorVanneste, Maarteneng
dc.contributor.authorHaflidason, Haflidieng
dc.contributor.authorBünz, Stefaneng
dc.PublishedInternational Journal of Earth Sciences 99(1 Supl): 207-225en_US
dc.description.abstractA series of en echelon cracks run nearly parallel to the outer shelf edge of the mid-Norwegian margin. The features can be followed in a *60-km-long and *5-km-wide zone in which up to 10-m-deep cracks developed in the seabed at 400–550 m water depth. The time of the seabed cracking has been dated to 7350 14C years BP (8180 cal years BP), which corresponds with the main Storegga Slide event (8100 ± 250 cal. years BP). Reflection seismic data suggest that the cracks do not appear to result from deep-seated faults, but it cannot be ruled out completely that tension crevices were created in relation to past movements on the headwall of the Storegga slide. The cracking zone corresponds well to the zone where the base of the hydrate stability zone (BHSZ) outcrops. Evidence of fluid release in the BHSZ outcrop zone comes from an extensive pockmark field. We suggest that post-glacial ocean warming triggered the dissociation of gas hydrates while the interplay between dissociation, overpressure, and sediment fracturing on the outer shelf remains to be understood.en_US
dc.rightsAttribution-NonCommercial CC BY-NCeng
dc.subjectGas hydrateseng
dc.subjectSlope stabilityeng
dc.subjectClimate changeeng
dc.subjectNorwegian Margineng
dc.titleNorwegian margin outer shelf cracking: a consequence of climate-induced gas hydrate dissociation?en_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderThe Author(s)en_US
dc.rights.holderCopyright The Author(s) 2010. This article is published with open access at Springerlink.comen_US
dc.subject.nsiVDP::Mathematics and natural science: 400en_US

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