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dc.contributor.authorBreivik, Asbjørn Johan
dc.contributor.authorFaleide, Jan Inge
dc.contributor.authorMjelde, Rolf
dc.contributor.authorFlueh, Ernst
dc.contributor.authorMurai, Yoshio
dc.date.accessioned2021-05-20T12:03:03Z
dc.date.available2021-05-20T12:03:03Z
dc.date.created2020-10-05T16:53:17Z
dc.date.issued2020
dc.PublishedTectonophysics. 2020, 776 .
dc.identifier.issn0040-1951
dc.identifier.urihttps://hdl.handle.net/11250/2755876
dc.description.abstractThe Norwegian continental shelf has been through several rift phases since the Caledonian orogeny. Early Cretaceous rifting created the largest sedimentary basins, and Early Cenozoic continental breakup between East Greenland and Europe affected the continental shelf to various degrees. The Lofoten/Vesterålen shelf is located off Northern Norway, bordering the epicontinental Barents Sea to the northeast, and the deep-water Lofoten Basin to the west. An ocean bottom seismometer/hydrophone (OBS) survey was conducted over the shelf and margin areas in 2003 to constrain crustal structure and margin development. This study presents Profile 8-03, located between the islands of Lofoten/Vesterålen and the shelf edge. The wide-angle seismic data were modeled using forward/inverse raytracing to build a crustal velocity-depth transect. Gravity modeling was used to resolve an ambiguity in seismic Moho identification in the southwestern part. Results show a crustal thickness of ~31 km, significantly thicker than what a vintage land station based study suggested. Profile 8-03 and other OBS profiles to the southwest show high sedimentary velocities at or near the seafloor, increasing rapidly with depth. Sedimentary velocities were compared to the velocity-depth function derived from an OBS profile at the Barents Sea margin, tied to a coincident well log, where there is little erosion. Results from this profile and the crossing Profile 6-03 (Breivik et al. 2017) indicate three major erosion episodes; Late Triassic-Early Jurassic, tentatively mid-Cretaceous, Late Cretaceous–early Cenozoic, and a minor late glacial erosion episode off Vesterålen.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleCrustal structure and erosion of the Lofoten/Vesterålen shelf, northern Norwegian marginen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionacceptedVersionen_US
dc.rights.holderCopyright 2020 Elsevieren_US
dc.source.articlenumber228318en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1
dc.identifier.doi10.1016/j.tecto.2020.228318
dc.identifier.cristin1837291
dc.source.journalTectonophysicsen_US
dc.source.40776
dc.relation.projectEuropean Science Foundation (ESF): CRP01en_US
dc.identifier.citationTectonophysics. 2020, 776, 228318en_US
dc.source.volume776en_US


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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