Science ❯ Earth Science
Chemical Signatures Mineralogy Isotope Geochemistry Oxygenation Precious Metals Isotopic Analysis Prebiotic Chemistry Geological History Mantle Plumes Chemical Composition
Researchers say the disappearance of an ancient lead‑isotope signal implies Earth moved from local crust reworking to large‑scale crust recycling that underpins today’s plate tectonic system.
