The oldest meteorite fragments found on Earth are about 4.54 billion years old; this, coupled primarily with the dating of ancient lead deposits, has put the estimated age of Earth at around that time.
Os fragmentos de meteoritos máis antigos atopados na Terra son de hai uns 4.540 Ma; isto, xunto principalmente coa datación de antigos depósitos de chumbo, situou a idade estimada da Terra en aproximadamente esa época.