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It was found along the Mid-Atlantic Ridge, a volcanic mountain range that splits the Atlantic Ocean from north to south. That well-established model began to be questioned 8 years ago, when researchers exploring some sections of the slow-spreading Mid-Atlantic Ridge found small, widely dispersed areas of exposed mantle rock on the seafloor. They rest on a million-year-old piece of Earth's crust at the base of a 14,000-foot submerged mountain in the Mid-Atlantic Ridge. |
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