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dc.date.accessioned2019-02-07T16:53:31Z
dc.date.created2018-10-24T19:53:13Z
dc.date.issued2018
dc.identifier.citationCorseri, Romain Faleide, Thea Sveva Faleide, Jan Inge Midtkandal, Ivar Serck, Christopher Sæbø Trulsvik, Mikal Planke, Sverre . A diverted submarine channel of Early Cretaceous age revealed by high-resolution seismic data, SW Barents Sea. Marine and Petroleum Geology. 2018, 98, 462-476
dc.identifier.urihttp://hdl.handle.net/10852/66440
dc.description.abstractMud-rich prograding sediment lobes make for most of the Barremian – Albian stratigraphic record in the SW Barents Sea. Submarine canyons and channels potentially represent key components of sediment transport from shelf to basin floor but geological evidences are lacking. We present high-resolution seismic data and scrutinize an elongated, ∼150-km long bright seismic amplitude and resistive anomaly located alongslope of a NW-sourced Barremian delta in the SW Barents Sea. Seismic interpretation is performed on a comprehensive database comprising 3D/2D high-resolution P-Cable and conventional seismic data, tied to three exploration wells to provide age-control on key horizons. Our results highlight that the elongated geophysical anomaly originates from a soft layer deposited over a harder, erosional surface. The erosive morphology displays three narrow, V-shaped incisions to the NE of the Hoop area which develop into a single, ∼6 km-wide, U-shaped channel towards the transition to the Fingerdjupet Subbasin. The geological feature is named Ceres and interpreted as a submarine channel carved in Aptian, a period of marked sea level rise and sediment starvation in the Hoop area. An evolutionary model of a diverted submarine channel is proposed where a flooded delta lobe acted as a topographic barrier, funneling bottom currents and thereby carving an alongslope, possibly contouritic channel. This is the first documented case of a submarine channel pathway – delta lobe interaction on the Norwegian continental shelf. To account for the geophysical expression of Ceres, two competing explanations are discussed: (1) hydrocarbon-bearing sands, and (2) organic-rich source rock. Both scenarios have important implications for petroleum prospectivity: a faulted stratigraphic trap holding large volumes of hydrocarbons or alternatively the channel-controlled distribution of mature Aptian source rock in the SW Barents Sea. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.languageEN
dc.language.isoenen_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleA diverted submarine channel of Early Cretaceous age revealed by high-resolution seismic data, SW Barents Seaen_US
dc.typeJournal articleen_US
dc.creator.authorCorseri, Romain
dc.creator.authorFaleide, Thea Sveva
dc.creator.authorFaleide, Jan Inge
dc.creator.authorMidtkandal, Ivar
dc.creator.authorSerck, Christopher Sæbø
dc.creator.authorTrulsvik, Mikal
dc.creator.authorPlanke, Sverre
dc.date.embargoenddate2020-09-01
cristin.unitcode185,15,22,0
cristin.unitnameInstitutt for geofag
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1
dc.identifier.cristin1623272
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine and Petroleum Geology&rft.volume=98&rft.spage=462&rft.date=2018
dc.identifier.jtitleMarine and Petroleum Geology
dc.identifier.volume98
dc.identifier.startpage462
dc.identifier.endpage476
dc.identifier.doihttp://dx.doi.org/10.1016/j.marpetgeo.2018.08.037
dc.identifier.urnURN:NBN:no-69642
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn0264-8172
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/66440/1/Corseri_etal_2018_Cristin.pdf
dc.type.versionAcceptedVersion
dc.relation.projectNFR/223272


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