DEEP LAYERS OF MANTLE AND OCEANIC-CRUST E XPOSED ALONG THE SOUTHERN WALL OF THE KANE FRACTURE-ZONE - SUBMERSIBLE OBSERVATIONS

The aim of the 20 Nautile dives of the recent Kanaut cruise was the st udy of the Kane Fracture Zone from its intersection with the Mid-Atlan tic Ridge up to 80 km to the west. The dives have been conducted along four massifs located along the southern wall of the fracture valley. The flanks of the massifs consist of slightly tilted peridotites, gabb ros and basalts, which have been exposed along normal and strike-slip major faults. No dike complex similar to that observed along the ZF Ve ma was observed The observed sections show pervasive cataclastic defor mation and greenschist-facies metamorphic overprint.