Wang and his team discovered the slab while exploring an area beneath the East Pacific Rise - a fast-spreading mid-ocean ridge located 2,000 miles (3,200 km) off the coast of South America.

It is now called the Mid-Ocean Ridge. In 1953, American physicists ... The large plate containing most of the Pacific Rim accounts for 80 percent of the earthquake energy of the planet.

The basement was formed about 60 million years ago at the mid-ocean ridge crest, and the uplift of the ridge and opening of Kings Trough occurred about 27 million years ago.

The tiny Juan de Fuca plate is largely responsible for the volcanoes that dot the Pacific Northwest ... renews the ocean floor and widens the giant basins. A single mid-ocean ridge system connects ...

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 Europe There are ...