(II) Rubidium-strontium dating. The rubidium isotope a
Chapter 30, Problem 53P(choose chapter or problem)
(II) Rubidium-strontium dating. The rubidium isotope \({ }_{37}^{87} R b, a \beta\) emitter with a half-life of \(4.75 \times 10^{10} y r\), is used to determine the age of rocks and fossils. Rocks containing fossils of ancient animals contain a ratio of \({ }_{38}^{87} S r \text { to }{ }_{37}^{87} R b \text { of } 0.0260\). Assuming that there was no \({ }_{38}^{87} \mathrm{Sr}\) present when the rocks were formed, estimate the age of these fossils.
Equation Transcription:
Text Transcription:
_37^87 R b, a \beta
4.75 \times 10^10 y r
_38^87 S r to_37^87 R bof 0.0260
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