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The role of fault reactivation and growth in the uplift of western Fennoscandia

Tim F. Redfield, P. T. Osmundsen and B. W. H. Hendriks
The role of fault reactivation and growth in the uplift of western Fennoscandia
Journal of the Geological Society of London (December 2005) 162 (6): 1013-1030


New structural data, published AFT data, and topographic data suggest that the latest Cretaceous-Cenozoic uplift of western Norway was associated with normal reactivation of the More-Trondelag Fault Complex. Reactivation focused along the base of today's topographic rise, with maximum displacements in the order of 2-3 km. Structural and AFT data indicate that reactivation occurred along a displacement gradient with least normal displacement in the NE and increasing displacements towards the SW. Reactivation commenced in connection with the Triassic to earliest Cretaceous phases of rifting on the Norwegian margin, and probably continued through most of the Tertiary. The Late Cretaceous to Cenozoic topographic development of the Scandes Mountains followed structurally induced templates, such as those described from other areas of active normal faulting. A fault model for the Cenozoic uplift of the Norwegian mainland provides a framework for provenance, erosion and transport of sediments eventually deposited in the offshore post-rift basins in the Latest Cretaceous, Palaeogene and Neogene. The asymmetric topographic profile of Fennoscandia is reflected in the AFT data and suggests that lithospheric flexure places a first-order control on the shape of the Scandes Mountains and the central Fennoscandian craton.

ISSN: 0016-7649
EISSN: 2041-479X
Serial Title: Journal of the Geological Society of London
Serial Volume: 162
Serial Issue: 6
Title: The role of fault reactivation and growth in the uplift of western Fennoscandia
Affiliation: Geological Survey of Norway, Trondheim, Norway
Pages: 1013-1030
Published: 200512
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 92
Accession Number: 2005-074521
Categories: Structural geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps, sects., block diags.
N62°00'00" - N64°00'00", E05°00'00" - E12°00'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200544
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