The basement region in SW Norway called Western Gneiss Region contains high-strain zones (mylonite zones) with deformation fabrics suggesting top-to-W or sinistral movements, particularly in the coastal parts. This was the leading edge of the Baltica craton during the Caledonian collisional history, subducted and shortly after obducted in a Himalayan-style setting, making it a classical area for studies of high-P metamorphism of continental crust and extensional deformation/orogenic collapse. The high pressures are indicated by widespread occurrences of eclogite, locally with coesite and micro-diamonds. In the west it is terminated by the enormous extensional shear zone usually referred to as the Nordfjord Sogn detachment zone.
Here are some pictures of porphyroclast systems from high-T shear zones in the area that I photographed during field work this summer.