List of radiometric dating techniques
Some of the common isotope pairs used are K-Ar, Rb-Sr, Pb-Pb, and U-Pb.Carbon-14 dating is another common technique, but it can only be used on carbon-containing things that were once alive.Far from being data, these dates are actually interpretations of the data.As discussed before, the assumptions influence the interpretation of the data.The reason this age may not be a true age—even though it is commonly called an absolute age—is that it is based on several crucial assumptions.
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Certain types of rocks, especially those that form from magma (igneous), contain radioactive isotopes of different elements.
There is also a difference in the timescale used to explain the layers.
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