Radioisotopes and the Age of The Earth
County Government Office 4001 E Foothills Dr, Sierra Vista, AZ, United States9:00 am RATE (Radioisotopes and the Age of The Earth) 10:45: Helium in zircons Radioactive crystals make and lose Helium These radioactive crystals, called zircons, are common in granitic rock. As a zircon crystal grows in cooling magma, it incorporates Uranium and Thorium atoms from the magma into its crystal lattice. The Uranium and […]