The chemical signatures of granitic continental crust from the earliest Archean are consistent with formation during subduction, indicating some form of plate tectonics was active at the time.
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Nutman, A.P. Forming the oldest-surviving crust. Nat. Geosci. 16, 762–763 (2023). https://doi.org/10.1038/s41561-023-01252-w
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DOI: https://doi.org/10.1038/s41561-023-01252-w
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