It is now called the Mid-Ocean Ridge. In 1953, American physicists Maurice Ewing (1906-1974) and Bruce Heezen (1924-1977) discovered that through this underwater mountain range ran a deep canyon.

New seismic images of the Lucky Strike slow-spreading segment of the Mid-Atlantic Ridge show thick lower crust at the center ...

The deep oceans are far from flat. They feature ridges, trenches, seamounts, and valleys, creating a diverse and dramatic ...

Mountains and volcanoes rise along the seam. The process renews the ocean floor and widens the giant basins. A single mid-ocean ridge system connects the world's oceans, making the ridge the ...

As it cools down, the lava creates a long line of mountains under the ocean called the Mid-ocean Ridge - the longest mountain range on Earth. The longest mountain range on land is the Andes in ...

As it cools down, the lava creates a long line of mountains under the ocean called the Mid-ocean Ridge - the longest mountain range on Earth. The longest mountain range on land is the Andes in ...

The now fully-developed mid ocean ridge is the site of hot new ocean floor ... Because the passive margin is not near active mountain building with a lot of active erosion, the sedimentary particles ...

Marie Tharp’s maps of the Atlantic Ocean floor did more than just reveal an underwater mountain range—they transformed the ...