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Scientists Extract Record-Breaking Mantle Core from Atlantic Ocean

The unprecedented 1.2-kilometer core offers new insights into Earth's formation and the origins of life.

A microscope sample showing shiny rainbow-colored layers of rock
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Professor Johan Lissenberg (left) and colleagues analyzing the cores, which were recovered from a “tectonic window” on the Mid-Atlantic Ridge. (Credit: Lesley Anderson, Exp. 399, JRSO_IODP)
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Overview

  • The core was drilled from the Atlantis Massif, an underwater mountain near the Mid-Atlantic Ridge.
  • Researchers recovered 71% of the core, significantly deeper than previous attempts.
  • The mantle rock shows extensive serpentinization, crucial for studying early Earth conditions.
  • Findings include unexpected mineral compositions and potential links to volcanic activity.
  • The study aims to understand the chemical reactions that could have spurred life on Earth.