Both isotopes are the starting points for complex decay series that eventually produce stable isotopes of lead. Uranium-lead dating was applied initially to uranium minerals, e.
Many radioactive dating methods are based on minute additions of daughter products to a rock or mineral in which a considerable amount of daughter-type isotopes already exists. These isotopes did not come from radioactive decay in the system but rather formed during the original creation of the elements.
Uranium—lead dating , abbreviated U—Pb dating , is one of the oldest  and most refined of the radiometric dating schemes. It can be used to date rocks that formed and crystallised  from about 1 million years to over 4.
Uranium-Lead dating is a radiometric dating method that uses the decay chain of uranium and lead to find the age of a rock. As uranium decays radioactively, it becomes different chemical elements until it stops at lead.
As each dating method was developed, tested, and improved, mainly since , a vast body of knowledge about the behaviour of different isotopic systems under different geologic conditions has evolved. It is now clear that with recent advances the uranium—lead method is superior….
It is an accurate way to date specific geologic events. This is an enormous branch of geochemistry called Geochronology.
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