Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4733682 | Journal of Structural Geology | 2008 | 11 Pages |
Abstract
This paper investigates the geometry, deformation history and age of the synkinematic granitic Årdal dyke complex in the Upper Jotun Nappe, SW Norway. The typically subparallel north-trending dykes are folded and boudinaged, reflecting emplacement and deformation in a top-to-southeast non-coaxial strain field. The synmagmatic strain field is interpreted to reflect thrusting of the nappe at 427 ± 1 Ma, the zircon U–Pb TIMS age of the Årdal dyke complex. The Upper Jotun Nappe is a displaced part of the Baltic Shield; the age is therefore a minimum age for initiation of Caledonian thrusting of crystalline Baltica crust in western Norway.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
Anders Mattias Lundmark, Fernando Corfu,