Main Page | See live article | Alphabetical index An oceanic ridge is an underwater mountain range, usually formed by plate tectonics. Atlantic-Indian Ridge East Pacific Rise Emperor Seamounts Gakkel Ridge Hawaiian Ridge Kerguelen Plateau Mid-Atlantic Ridge Mid-Indian Ridge Nazca Ridge Pacific-Antarctic Ridge Reykjanes Ridge Bermuda Rise Rockall Rise Southeast Indian Rise Southwest Indian Ridge Walvis Ridge See also: Oceanic trench, plate tectonics, earth science, list of landforms. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.