Radiometric age dating examples
The oldest known rocks on the earth that have been analyzed, have been dated back some 4.404 billion years.
Radiometric dating is the term for a method to determine the age of an object based on the concentration of a particular radioactive isotope contained within it.
Radiometric dating is the principal source of information about the absolute age of rocks and other geological features, including the age of the Earth itself, and can be used to date a wide range of natural and man-made materials.
Radiometric dating (often called radioactive dating) is a way to find out how old something is.
It may be used to date a wide range of natural and man-made materials.
This helps to counter the effects of heating and squeezing, which a rock may experience in its long history.
Different dating methods may be needed to confirm the age of a sample.
For example, a study of the Amitsoq gneisses from western Greenland used five different radiometric dating methods to examine twelve samples and got agreement to within 30 million years on an age of 3,640my.
Absolute dating is the process of determining an age on a specified chronology in archaeology and geology.
It is therefore essential to have as much information as possible about the material being dated and to check for possible signs of alteration.