This variety of techniques allows scientists to interpret the approximate age at which a specimen experienced major events such as its elemental formation (nucleogenesis), solidification, heating, remelting, shock, mixing with other minerals, exposure to water or to high-energy radiation.
Scientists performing more than one measurement of radiometric age on a given sample are not surprised when the resulting ages disagree.
What can radiometric dating tell us about the age of the Earth and our Solar System?
What are the implications for our interpretation of the scriptural account of creation?
Similarly, the radiometric analysis of the rock samples on the earth can give us idea about the age of the earth.