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Radioactice dating

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Radioactive dating is a method of dating rocks and minerals using radioactive isotopes.This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks. Some do not change with time and form stable isotopes (i.e.The point is that radiometric dating is not the sure thing that it has been made out to be over the last century.

It takes another 4,460,000,000 years for half of the remaining sample to decay into Pb206 and then another 4,460,000,000 years for half of what’s then left to decay, and so on.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.In other words, in only a few thousand years, 1.5 billion years’ worth (at today’s rates) of radioactive decay has taken place” (For more on this, see Ai G’s radiometric dating FAQ page at If any of these assumptions are wrong, the method cannot accurately determine the age of a specimen.