Tectonic map and main amphibole-chlorite shear zones in Marine de Giottani metagabbros (see location on Fig. 1). A. Geological map (from BRGM) with foliation measurements and trajectories (in black) and with observed amphibole-chlorite shear zones (in red). Violet star for the location of key outcrops shown in Fig. 3. B. Stereoplots of foliation and lineation measurements in metabasalts (prasinites), metagabbros and serpentinites (lithologies of the Upper Oceanic Unit (Fig. 1) in Marine de Giottani). C. Stereoplots of amphibole-chlorite shear zones and associated lineations.