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It also implies that none of the factors that might affect the rate of the radioactive decay could not. If the ages this dating process generates are true, it gets harder to assume that nothing on the outside of the sample has any effect on the system.

Since most radiometric daters prefer using zircon for this process, geologists often call uranium-lead dating zircon dating.The four isotopes are uranium-235, uranium-238, lead-207, and lead-206.The process of dating finds the two ratios between uranium-235 and lead-207; and uranium-238 and lead-206.The last of the benefits is that the zircon, itself, is very hard.This fact helps with extracting the zircon out of the rock it was in.

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