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dc.contributor.authorRoberts, David
dc.coverage.spatialSMØLA
dc.coverage.spatialBREMANGER
dc.coverage.spatialSOLUND
dc.coverage.spatialHITRA
dc.coverage.spatial11173 Solund
dc.coverage.spatial11184 Bremanger
dc.coverage.spatial13211 Smøla
dc.coverage.spatial14211 Hemne
dc.coverage.spatialTRØNDELAG
dc.coverage.spatialMØRE OG ROMSDAL
dc.coverage.spatialVESTLAND
dc.date.accessioned2020-08-26T13:22:41Z
dc.date.available2020-08-26T13:22:41Z
dc.date.issued1983
dc.identifier.urihttps://hdl.handle.net/11250/2675144
dc.description.abstractLate-Caledonian megascopic folds deforming the Old Red Sandstone sequences of southern Norway are mostly synclines of E-W to NE-SW trend and E to NE plunge. Thrusts along the eastern and southern margins of several ORS areas, and stretching lineations, denote approximate southeastward translation of the sequence from their basinal sites. This contractile movement occurred principally along rejuvenated, syn-depositional, planar or listric-style extension faults. Development of basins took place during the imposition of a fundamental NW-SE to NNW-SSE crustal extension following the major Scandian, Silurian orogenic phase. This was also influenced by an orogen-parallel sinistral mega-shear from Svalbard through northern Britain to the Appalachians which assisted in producing a transtensional regime in southern Norway. Thus, during ORS basin development and sedimentation a subordinate dextral strike-slip component has acted in combination with the basic extensile field. During late Devonian, probably Frasnian time, this transtensional regime was replaced by a SE-directed compression, and partly transpression, so producing the macrofolds, late ductile thrusts and other structures which are traceable far outside the confines of the ORS districts.
dc.language.isoeng
dc.relation.ispartofseriesNGU (380)
dc.rightsNavngivelse 4.0 Internasjonal
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no
dc.subjectDEVON
dc.subjectTEKTONIKK
dc.subjectKALEDONSKE FJELLKJEDE
dc.titleDevonian tectonic deformation in the Norwegian Caledonides and its regional perspectives.
dc.typeJournal article
dc.description.localcode36180
dc.source.pagenumber85-96


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