In order to do proper dating, you need to be sure that the mineral had a. In the process of radioactive decay, uranium transmutes into lead.
Knowing N,, and the half-life of the reaction, the age of the sample can then be determined. References. Turcotte, D. L. and Schubert, G. Geodynamics. Zircon in Uranium-Lead Dating. The favorite mineral among U-Pb daters is zircon (ZrSiO4), for several good reasons. First, its chemical structure likes uranium and hates lead. Uranium easily substitutes for zirconium while lead is strongly excluded. This means the clock is truly set at zero when zircon forms. Uranium-lead (U-Pb) dating is a staple of the billions-of-years claims about igneous and metamorphic rocks and meteorites giving rise to the.
The best age for the Earth is based on the time required for the lead isotopes in four very old lead ores (galena) to have evolved from the.
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- Uranium-Lead Dating -- from Eric Weisstein's World of Chemistry
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