Scientists drill longest-ever piece of Earth's mantle from underwater mountain near 'Lost City'

Stephanie Pappas is a contributing writer for Live Science, covering topics ranging from geoscience to archaeology to the human brain and behavior.

Researchers have drilled the deepest-ever sample of rocks from Earth's mantle, penetrating 0.7 mile in the Mid-Atlantic Ridge, where the seafloor is spreading apart.

Related: 'Dragon' and 'tree of life' hydrothermal vents discovered in Arctic region scientists thought was geologically dead So far, the team has found that rather than traveling vertically, melts seem to move obliquely, traveling in a diagonal, inclined path toward the surface, Lissenberg said. Mantle rock is fragile and tends to fall apart, jamming drill bits, Lissenberg said, but the team was remarkably lucky.

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