The first discovered mid-ocean ridge was the Mid-Atlantic Ridge, which is a spreading center that bisects the North and South Atlantic basins; hence the origin of the name 'mid-ocean ridge'. Most ...

Tharp’s map provided some of the necessary missing evidence. If the ocean floor was spreading apart at the Mid-Atlantic Ridge ...

as shown on the map. These zones include: the Pacific Ring of Fire around the Pacific Ocean the Mid-Atlantic Ridge, a mid-ocean ridge that extends along the floor of the Atlantic Ocean southern ...