2.5 billion-year-old ‘time capsule’ rocks rewrite history: New study challenges mantle oxidation theory

A thin section of ancient rocks collected from the Gackel Ridge near the North Pole, imaged under a microscope and seen under cross-polarized light. Field width ~ 14mm. Analyzing rocks…

Continue Reading2.5 billion-year-old ‘time capsule’ rocks rewrite history: New study challenges mantle oxidation theory