Abstract
From studies of orthophotos and through field work, a complex deformation pattern has been recognized in the Lyngen area, Troms, Norway. The area is among the most alpine in Norway and contains a strong clustering of rock slope failures. The rock slope failures are characterized by two different deformation styles, and the difference in style is geographically separated by a fjord and valley lineament. Field studies suggest that two directions of tension oriented almost perpendicular to each other, utilize pre-existing brittle to brittle/ductile fabrics inherited from much older deformation events. The NE-SW direction of tension is parallel to the average displacement vector pointing down-dip along inherited faults. This vector is gravitationally controlled. The NW-SE displacement vector trends strike-parallel along the inherited faults. The presence of the latter appears to be confined geographically.
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References
Agliardi F, Crosta G, Zanchi A (2001) Structural constraints on deep-seated slope deformation kinematics. Eng Geol 59:83–102
Böhme M, Henderson I, Saintot A, Hermanns RL, Henriksen H (2011) Rock-slope instability investigations in Sogn & Fjordane County, Norway: a detailed structural and geomorphological analysis. In: Jaboyedoff M (ed) Slope tectonics, vol 351. Geological Society, London, pp 97–112, Special Publication. ISBN 978-1-86239-324-0
Brekke H,Kalheim JE, Riis F, Egeland B, Blystad P, Johnsen S, Ragnhildstveit J (1992) Two-way time map of the unconformity at the base of the Upper Jurassic (north of 69°N) and the unconformity at the base of the Cretaceous (south of the 69° N), offshore Norway, including the main geological trends onshore. Scale 1:2 million NPD Continental Shelf Map No. 1., The Norwegian Petroleum Directorate/The Geological Survey of Norway
Braathen A, Blikra LH, Berg SS, Karlsen F (2004) Rock-slope failures in Norway; type, geometry, deformation mechanisms and stability. Norwegian J Geol 84:67–88
Bunkholt H, Osmundsen PT, Redfield T, Oppikofer T, Eiken T, L'Heureux J-S, Hermanns R, Lauknes TR (2011) ROS Fjellskred i Troms: status og analyser etter feltarbeid 2010. Norwegian Geological Survey Report No. 2011–031, 135 p
Dehls J, Olesen O, Olsen L, Blikra LH (2000a) Neotectonic faulting in northern Norway; the Stuoragurra and Nordmannvikdalen postglacial faults. Quatern Sci Rev 19:1445–1460
Dehls JF, Olesen O, Bungum H, Hicks EC, Lindholm CD, Riis F (2000b) Neotectonic map: Norway and adjacent areas. Geological Survey of Norway, Notway
Furnes H, Roberts D, Sturt BA, Thon A, Gale GH (1980) Ophiolite fragments in the Scandinavian Caledonides. In: Panayioutou A (ed) Ophiolites – proceedings of the international Ophiolite symposium, Nicosia, Cyprus, 1979, Geological Survey Department of Cyprus, pp 582–600
Hansen J-A, Bergh SG, Henningsen T, Davids C (2011) Brittle fault zones in North Norway: onshore-offshore link and regional implications. NGF abstracts and proceedings of the Geological Society of Norway, vol 1, pp 37
Henderson IHC, Saintot A (2011) Regional spatial variations in rockslide distribution from structural geology ranking: an example from Storfjorden, western Norway. In: Jaboyedoff M (ed) Slope tectonics, vol 351. Geological Society, London, pp 79–96, Special Publication. ISBN 978-1-86239-324-0
Henderson IHC, Laukens TR, Osmundsen PT, Dehls J, Larsen Y, Redfield TF (2011) A structural, geomorphological and InSAR study of fractures in the development of rock slope failures. In: Jaboyedoff M (ed) Slope tectonics, vol 351. Geological Society, London, pp 185–201, Special Publication. ISBN 978-1-86239-324-0
Kukkonen IT, Olesen O, Ask, Maria VS and the PFDP Working Group (2010) Postglacial faults in Fennoscandia: targets for scientific drilling. GFF 132(1):71–81
Mosar J (2000) Depth of extensional faulting on the Mid-Norway Atlantic passive margin. Geol Surv Norway Bull 437:33–41
Mosar J, Eide EA, Osmundsen PT, Sommaruga A, Torsvik TH (2002) Greenland-Norway separation: a geodynamic model for the North Atlantic. Norwegian J Geol 82:281–298
Osmundsen PT, Henderson I, Lauknes TR, Larsen Y, Redfield TF, Dehls J (2009) Active normal fault control on landscape and rock-slope failure in northern Norway. Geology 37:135–138
Osmundsen PT, Redfield TF, Hendricks BHW, Bergh S, Hansen J-A, Henderson I, Dehls J, Lauknes TR, Larsen Y, Anda E, Davidsen B (2010) Fault-controlled alpine topography in Norway. J Geol Soc 167(1):83–98
Petit JP (1987) Criteria for the sense of movement on fault surfaces in brittle rocks. J Struct Geol 9:508–698
Saintot A, Henderson I, Derron M-H (2011) Inheritance of ductile and brittle structures in the development of large rock slope instabilities: examples from Western Norway. In: Jaboyedoff M (ed) Slope tectonics, vol 351. Geological Society, London, pp 27–78, Special Publication. ISBN 978-1-86239-324-0
Sigmond EMO, Gustavsen M, Roberts D (1984) Bedrock map of Norway, 1: 1 million. Geological Survey of Norway
Tolgensbakk J, Solli JL (1988) Kåfjord, kvartærgeologi og geomorfologi, 1:50 000, 1634 II. Geografisk Institutt/University of Oslo, Oslo
Zwaan KB (1988) Nordreisa, bedrock map, M 1: 250 000. Geological Survey of Norway
Acknowledgments
This work is part of the project ROS Fjellskredanalyse i Troms, a collaboration project between the Norwegian Geological Survey (NGU) and the Norwegian Water Resources and Energy Directorate (NVE). The project is fully financed by NVE.
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Bunkholt, H., Redfield, T., Osmundsen, P.T., Oppikofer, T., Hermanns, R.L., Dehls, J. (2013). The Role of Inherited Structures in Deep Seated Slope Failures in Kåfjorden, Norway. In: Margottini, C., Canuti, P., Sassa, K. (eds) Landslide Science and Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31325-7_35
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