What is one advantage of radioactive dating over relative dating


03-May-2016 20:56

Another way of expressing this is the half-life period (given the symbol T).

The half-life is the time it takes for half of the parent atoms to decay.

The unstable or more commonly known radioactive isotopes break down by radioactive decay into other isotopes.This decay process leads to a more balanced nucleus and when the number of protons and neutrons balance, the atom becomes stable.This radioactivity can be used for dating, since a radioactive 'parent' element decays into a stable 'daughter' element at a constant rate.For an element to be useful for geochronology (measuring geological time), the isotope must be reasonably abundant and produce daughter isotopes at a good rate.

what is one advantage of radioactive dating over relative dating-15

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The relationship between the two is: T = 0.693 / λ Many different radioactive isotopes and techniques are used for dating.

All rely on the fact that certain elements (particularly uranium and potassium) contain a number of different isotopes whose half-life is exactly known and therefore the relative concentrations of these isotopes within a rock or mineral can measure the age.



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