What is the difference between relative and absolute dating?
Log in Sign up. How can we help? What is your email? Upgrade to remove ads. Original dating of Earth was done by fossils. Radiometric geochronology; uses decay of unstable or radiogenic isotopes to measure the age of a mineral. Same mineral, different number of te in the nucleus. Amount of time needed for half the amount of a parent isotope to decay to a daughter isotope. Loss of a He ion Lose 2P and 2N. Loss of electron "Turns" a neutron into a proton.
Addition of a beta particle "electron" "Turns" a proton into a neutron.