Isochron dating earth

If we knew the fraction of a radioactive element still remaining in a mineral, it would be a simple matter to calculate its age by the formula

The utility of the rubidium – strontium isotope system results from the fact that 87 Rb (one of two naturally occurring isotopes of rubidium ) decays to 87 Sr with a half-life of billion years. In addition, Rb is a highly incompatible element that, during partial melting of the mantle, prefers to join the magmatic melt rather than remain in mantle minerals . As a result, Rb is enriched in crustal rocks. The radiogenic daughter, 87 Sr, is produced in this decay process and was produced in rounds of stellar nucleosynthesis predating the creation of the Solar System.


Isochron dating earth

Isochron dating earth



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