Vis enkel innførsel

dc.contributor.authorLundberg, E
dc.contributor.authorJuhlin, C
dc.contributor.authorNasuti, Aziz
dc.date.accessioned2019-10-15T08:45:53Z
dc.date.available2019-10-15T08:45:53Z
dc.date.created2013-01-17T14:29:16Z
dc.date.issued2012
dc.identifier.citationSolid Earth (SE). 2012, 3 (1), 175-188.nb_NO
dc.identifier.issn1869-9510
dc.identifier.urihttp://hdl.handle.net/11250/2622156
dc.description.abstractThe Møre-Trøndelag Fault Complex (MTFC) is one of the most prominent fault zones of Norway, both onshore and offshore. In spite of its importance, very little is known of the deeper structure of the individual fault segments comprising the fault complex. Most seismic lines have been recorded offshore or focused on deeper structures. This paper presents results from two reflection seismic profiles, located on each side of the Tingvollfjord, acquired over the Tjellefonna fault in the southeastern part of the MTFC. Possible kilometer scale vertical offsets, reflecting large scale northwest-dipping normal faulting, separating the high topography to the southeast from lower topography to the northwest have been proposed for the Tjellefonna fault or the Baeverdalen lineament. In this study, however, the Tjellefonna fault is interpreted to dip approximately 50–60° towards the southeast to depths of at least 1.3 km. Travel-time modeling of reflections associated with the fault was used to establish the geometry of the fault structure at depth, while detailed analysis of first P-wave arrivals in shot gathers, together with resistivity profiles, were used to define the near surface geometry of the fault zone. A continuation of the structure on the northeastern side of the Tingvollfjord is suggested by correlation of an in strike direction P-S converted reflection (generated by a fracture zone) seen on the reflection data from that side of the Tingvollfjord. The reflection seismic data correlate well with resistivity profiles and recently published near surface geophysical data. A highly reflective package forming a gentle antiform structure was also identified on both seismic profiles. This structure could be related to the folded amphibolite lenses seen on the surface or possibly by an important boundary within the gneissic basement rocks of the Western Gneiss Region. The fold hinge line of the structure is parallel with the Tjellefonna fault trace suggesting that the folding and faulting may have been related.nb_NO
dc.language.isoengnb_NO
dc.publisherEuropean Geosciences Union (EGU)nb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleHigh resolution reflection seismic profiling over the Tjellefonna fault in the More-Trondelag Fault Complex, Norwaynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber175-188nb_NO
dc.source.volume3nb_NO
dc.source.journalSolid Earth (SE)nb_NO
dc.source.issue1nb_NO
dc.identifier.doi10.5194/se-3-175-2012
dc.identifier.cristin991237
dc.description.localcode© Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 Licensenb_NO
cristin.unitcode194,64,90,0
cristin.unitnameInstitutt for geovitenskap og petroleum
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Navngivelse 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Navngivelse 4.0 Internasjonal