At an underwater mountain in the middle of the Atlantic Ocean, scientists have drilled nearly a mile beneath the ocean floor and pulled up an unprecedented scientific bounty — pieces of Earth’s rocky mantle.
, sheets of oceanic crust tinged with some of the upper mantle that were uplifted and plastered onto the land. But they too have been altered by the trip., a famous ocean expedition, set out to drill through the thinner crust on the ocean floor to reach the mantle in 1961 but failed.
“This could be a way that you go from just having basically water and rock,” said Susan Lang, the co-chief scientist of the expedition and a scientist at the Woods Hole Oceanographic Institution. “That produces hydrogen, [and] that hydrogen is a really big fuel to things like the formation of smaller organic molecules, and that can then combine with other organic molecules and lead to early life.
The scientists have been so busy processing the enormous volume of rock they’ve recovered that they’ve had little opportunity to study the samples in detail, or even reflect on the magnitude of the achievement. The drill bits need to be switched out every 50 hours. The team aboard works in 12-hour shifts, not wasting a minute of time.
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