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

That ridge, it was later discovered, extended through the major oceans of the world. It is now called the Mid-Ocean Ridge. In 1953, American physicists Maurice Ewing (1906-1974) and Bruce Heezen ...

The now fully-developed mid ocean ridge is the site of hot new ocean floor ... above the trench - and in the backarc - on the opposite side of the volcanic island chain from the trench. There are many ...