Archaean Elements of the Basement Outliers West of the Scandinavian Caledonides in Northern Norway: Architecture, Evolution and Possible Correlation with Fennoscandia

Meso- and Neoarchaean basement rocks occur in two coastal outliers west of the Scandinavian Caledonides in North Norway, i.e. in western Troms (West Troms Basement Complex) and the Lofoten-Vesteralen area. When restored, these two outliers appear to have been assembled together in a cratonic-marginal position at the northern edge of the Fennoscandian shield in the Neoarchaean, and they share a similar tectono-magmatic history prior to Palaeoproterozoic events. This is confirmed by radiometric dating and similarity of sedimentary/volcanic units, intrusive/magmatic events, structural architecture and metamorphic events, and the mechanisms of amalgamation.