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dc.contributor.advisorStünitz, Holger
dc.contributor.authorKlæbo, Erik Vågå
dc.description.abstractThe tectonic boundary of between the Lyngen magmatic complex and the underlaying Nordmannvik have been examined for kinematic indicators. This boundary is characterised by an amphibole facies garnet-mica-kyanite gneiss overlain by a greenschist facies amphibolite/meta-gabbro succession separated by heavily foliated and lineated garnet-mica schist, phyllites and quartzites. Two main populations of lineation were identified: A West verging and a NW verging. Field observations and thin section analyses indicate an overall top to the WNW sense of shear. Not all kinematic indicators show emplacement in this direction; a cluster of indicators located in a synform NE of Nordkjosbotn showed a consistently top to the SE sense of shear. Top to the WNW kinematic indicators were also found on the East side of Storfjorden, 8 km to the east of the Lyngen nappe/Nordmannvik boundary. The emplacement is interpreted to have happened in greenschist facies conditions based on the presence of chlorite in schist and phyllites. Quartz CPO indicate that the temperatures were high enough that rhomb and prism a-slip was dominant with grain boundary migration as the dominant recrystallization mechanism. A top WNW sense of shear indicate that the Lyngen nappe could have been displaced due to extensional collapse or possibly extrusion wedging.en_US
dc.publisherUiT Norges arktiske universiteten_US
dc.publisherUiT The Arctic University of Norwayen_US
dc.rights.holderCopyright 2017 The Author(s)
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Tectonics: 463en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Tektonikk: 463en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Mineralogy, petrology, geochemistry: 462en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Mineralogi, petrologi, geokjemi: 462en_US
dc.subjectScandinavian Caledonidesen_US
dc.subjectNorth Caledonidesen_US
dc.subjectKinematic indicatorsen_US
dc.subjectShear zoneen_US
dc.subjectMetamorphic faciesen_US
dc.subjectGreenschist faciesen_US
dc.subjectExtensional collapseen_US
dc.subjectextrusion wedgeen_US
dc.subjectLyngen nappeen_US
dc.subjectNordmannvik nappeen_US
dc.titleThermal conditions and kinematics associated with final emplacement of the Lyngen nappeen_US
dc.typeMaster thesisen_US

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Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)
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