This underwater mountain range is now called the Mid-Atlantic Ridge, and it was one of ... overarching, theory of plate ...

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 ...

The rift valley between these two continental plates is part of the Mid-Atlantic Ridge, which widens by about 2 cm each year. Although all of this tectonic action happens way down below the ocean ...