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By Anonymous User · March 3, 2026

Earth’s oldest crystals suggest an early start for plate tectonics  NatureAncient Zircon Crystals Provide a Window into Early Earth History  CaltechAncient Rocks Reveal Evidence Of The First Continents And Crust Recycling Processes On Earth  astrobiology.comEarth’s oldest minerals suggest plate tectonics began 3.3 billion years ago  동아사이언스On This Day: Scientists announce oldest-known fragment from Earth's crust  upi.com