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27-Feb-2017 18:02

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The most widely used and accepted form of absolute dating is radioactive decay dating. Radioactive decay refers to the process in which a radioactive form of an element is converted into a nonradioactive product at a regular rate.

The nucleus of every radioactive element (such as radium and uranium) spontaneously disintegrates over time, transforming itself into the nucleus of an atom of a different element.

Similarly, pollen grains released by seed-bearing plants became fossilized in rock layers.

If a certain kind of pollen is found in an archaeological site, scientists can check when the plant that produced that pollen lived to determine the relative age of the site.

By measuring the amount of original and transformed atoms in an object, scientists can determine the age of that object.Absolute dating methods are carried out in a laboratory.Absolute dates must agree with dates from other relative methods in order to be valid.As long as an organism is alive, the supply of carbon-14 is replenished.