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Signs of life found in Earth's mantle
Scientists have collected an unprecedented sequence of rock samples from the shallow mantle of the Atlantic Ocean that bear signs of life, unique carbon cycling, and ocean crust movement. During a 47-day expedition to collect rock cores from the Atlantis Massif, a 4,000 metre tall underwater mountain along the Mid-Atlantic Ridge,
​London: Scientists have collected an unprecedented sequence of rock samples from the shallow mantle of the Atlantic Ocean that bear signs of life, unique carbon cycling, and ocean crust movement. During a 47-day expedition to collect rock cores from the Atlantis Massif, a 4,000 metre tall underwater mountain along the Mid-Atlantic Ridge, researchers collected rock samples using seabed rock drills from Germany and the UK - the first time the technology has been utilised in ocean drilling.
The aim of the expedition was to determine how mantle rocks are brought to the seafloor and react with seawater - such reactions may fuel life in the absence of sunlight, which may be how life developed early in Earth's history, or on other planets.
The team also hopes to learn more about what happens to carbon during the reactions between the rocks and the seawater - processes that could impact climate by sequestering carbon.
