Plate tectonics started over 4 billion years ago, geochemists report

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Plate tectonics started over 4 billion years ago, geochemists report

(PhysOrg.com) -- A new picture of the early Earth is emerging, including the surprising finding that plate tectonics may have started more than 4 billion years ago — much earlier than scientists had believed, according to new research by UCLA geochemists reported Nov. 27 in the journal Nature.


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