Fig. 6

Main deformation stages in the Internal Complex: a Polymetamorphic garnet with a light pre-Alpine core and a cloudy Alpine rim (stage 1, Croix Courma sheet; plane-polarized light). b Micaschist with S2 marked by Omp, Gln and Wm wrapping around earlier Gln crystals disposed at high angle (Loses Blanches sheet; crossed-polarized light ). c Several metres F3 isoclinal fold in orthogneiss (Internal Complex). d Photomicrograph of F3 hinge zone in which omphacite shows undulose extinction (Loses Blanches sheet; plane-polarized light). e F5 fold in rusty fine grained micaschist (Loses Blanches sheet). f F5 hinge zone with recrystallized phengite (Loses Blanches sheet; crossed-polarized light). g F6 hinge zone (cm-size) in fine grained micaschist (Croix Courma sheet). h F6 hinge zone with phengite showing undulose extinction and kink geometry with fractures (Croix Courma sheet; crossed-polarized light ). i Dyke (highlighted in purple) cutting the S2 foliation; outcrop close to Marine village,; orientation of the contact: 355/35 (Croix Courma sheet). l Dyke (highlighted in purple) emplaced inside a micaschist with S2 foliation; outcrop north of Albard di Bard. Brittle fractures (S8) crosscut both dyke and micaschist (Croix Courma sheet). Field photos coordinates are included in Online Resource 3