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

Proceedings of the National Academy of Sciences, Volume 122, number 31, August 2025.
Significantly rock of quartz-pyroxen eoarcheen (> 3.65 GA) from Akilia, in Greenland, represents a key fragment of the first rocky album of the Earth. By integrating new data of potassium isotopes with petrological observations, our study identifies a chemical …