mattotcha, 3.75 Billion Year Old – Scientists Discover Evidence of an Ancient Segment of Earth’s Crust
https://scitechdaily.com/3-75-billion-year-old-scientists-discover-evidence-of-an-ancient-segment-of-earths-crust/ #geology #crust #zircon # FennoscandianShield #greenland #continents # Eoarchean