Figure F1. Bathymetry and geology from 14° to 16°N along the Mid-Atlantic Ridge. Depth range is ~5400 (violet) to 1600 (red) m. Sample lithologies are compiled from all known dredging and submersible results. A. North of the 15°20´N Fracture Zone. B. South of the 15°20´N Fracture Zone. C. View from the north of "Mt. Mike," where a large low-angle normal fault is thought to be exposed on the seafloor. Open circles = mantle peridotite, solid circles = basalt.

Figure F1. Bathymetry and geology from 14° to 16°N along the Mid-Atlantic Ridge. Depth range is ~5400 (violet) to 1600 (red) m. Sample lithologies are compiled from all known dredging and submersible results. A. North of the 15°20´N Fracture Zone. B. South of the 15°20´N Fracture Zone. C. View from the north of "Mt. Mike," where a large low-angle normal fault is thought to be exposed on the seafloor. Open circles = mantle peridotite, solid circles = basalt.