High-pressure granulitic tectonites from shear zones at the contacts between the Bacariza Formation
and its bounding units developed after eo-Hercynian subduction, during the initial exhumation of the
Cabo Ortegal complex. Structural, petrographic, and crystallographic analysis of these tectonites with the
EBSD technique enables us to unravel different, syn-metamorphic, deformation mechanisms in the minerals
of the high-pressure granulitic assemblage. Dislocation creep and recovery were the main deformation
mechanisms in garnet during peak metamorphism, followed by porphyroclast rigid rotation. The matrix
minerals accommodated subsequent ductile deformation, still under high-pressure. Mass transfer, anisotropic
growth and dislocation creep dominated deformation of augite. Subgrain rotation-recrystallisation by climbaccommodated
dislocation creep operated in plagioclase and dislocation creep by <a>prism-slip in
quartz. Subsequent, static amphibolite-facies retrogradation was followed by decompression-related
microfracturing during exhumation through medium- to upper crustal realms. Ductile rock deformation
was non-coaxial and accommodated a top-to-the-NE displacement of hangingwall blocks