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Geologists Found Remnants Of Earth's Mantle That Have Lasted Over 2.5 Billion Years And Challenge Previous Beliefs About Our Planet's Oxidation Processes
The rocks were extracted from two spots-the Southwest Indian Ridge between southern Africa and Antarctica and the Gakkel Ridge near the North Pole. Sign up for Chip Chick's newsletter and get ...
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Tracking mantle depletion
With the osmium isotopic composition of mantle rocks retrieved from the sea floor at the Gakkel Ridge in the Arctic Ocean, Liu and colleagues 1 appear to have identified up to 2.2-billion-year-old ...