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Revisiting the Eoarchean Akilia quartz-pyroxene rock with potassium isotopes: Implications for early-ocean sedimentation

TechnologyScience & NatureRevisiting the Eoarchean Akilia quartz-pyroxene rock with potassium isotopes: Implications for early-ocean sedimentation

Proceedings of the National Academy of Sciences, Volume 122, Issue 31, August 2025. SignificanceThe Eoarchean (>3.65 Ga) quartz-pyroxene rock from Akilia, Greenland, represents a key fragment of Earth’s earliest rock record. By integrating novel potassium isotope data with petrological observations, our study identifies a chemical …

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