explain the difference geologic age-dating and numrical (absolute) geologic age-dating?



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    Geologic age dating or relative dating doesn’t assign specific dates to events or strata.  It just compares and contrasts events by which one happened first.  Relative dating basically says that this layer of earth formed before this one etc. (I’m using the geologic principle of superposition here — the older layer of rock is always deeper than the newer layer of rock).  Absolute or radiometric dating gives a specific, accurate numerical date for a rock or other sample. Scientists use Carbon-14, Argon, and other chemicals/techniques to determine a sample’s absolute age.  Relative dating is used for comparison, while absolute dating is used for more specificity.  

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