This temperature is what is known as closure temperature and represents the temperature below which the mineral is a closed system to isotopes. This damage is most concentrated around the parent isotope U and Thexpelling the daughter isotope Pb from its original position in the zircon lattice. Retrieved from " https: Zircon also forms multiple crystal layers during metamorphic events, which each may record an isotopic age of the event. Thomas August
That is, at some point in time, an atom of such a nuclide will undergo radioactive decay and spontaneously transform into a different nuclide.
Prentice Hall. This volcanic episode provides an important reference datum in the glacial history of North America. Radioactive Dating: Chinese Japanese Korean Vietnamese. United States Geological Survey. Retrieved 9 March