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2013 | OriginalPaper | Buchkapitel

The Role of Inherited Structures in Deep Seated Slope Failures in Kåfjorden, Norway

verfasst von : Halvor Bunkholt, Tim Redfield, Per Terje Osmundsen, Thierry Oppikofer, Reginald L. Hermanns, John Dehls

Erschienen in: Landslide Science and Practice

Verlag: Springer Berlin Heidelberg

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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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Metadaten
Titel
The Role of Inherited Structures in Deep Seated Slope Failures in Kåfjorden, Norway
verfasst von
Halvor Bunkholt
Tim Redfield
Per Terje Osmundsen
Thierry Oppikofer
Reginald L. Hermanns
John Dehls
Copyright-Jahr
2013
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-642-31325-7_35