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If those rocks really have been sitting around on the moon for billions of years, I suspect that the the wide range of physical and chemical processes which occurred over that time period had a much more profound effect on the uncertainty of the age determination. Those who are committed to an ancient age for the earth currently believe that it is 4.This is best illustrated by the radioactive age of a sample of diamonds from Zaire. Obviously, then, the minimum error in that measurement is 1.An expert scientist summarizes: Since then, geologists have made many tens of thousands of radiometric age determinations, and they have refined the earlier estimates.A key point is that it is no longer necessary simply to accept one chemical determination of a rock's age.
Sediments include different types of pollen depending upon the season.Age estimates can be cross-tested by using different isotope pairs.