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The isotope 176Lu undergoes β- decay to 176Hf with a long half-life. From a plot of 176Hf/177Hf (...

The isotope 176Lu undergoes β- decay to 176Hf with a long half-life. From a plot of 176Hf/177Hf

(y-axis) versus 176Lu/177Hf (x-axis) for a suite of cogenetic (=related) meteorites, Patchett &

Tatsumoto (1980) obtained a 10-point isochrons with a slope of 0.0934 and an initial 176Hf/177Hf

ratio of 0.27973. The age of the meteorites is known to be 4550 Ma from independent Pb-Pb

dating. Calculate the decay constant (λ) and half-life (t1/2) of 176Lu decay

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Answer #1

NSIDER horn a plot ob 17 6 HF /177 Crasis) a a wele orites. Patchet and Tatsumoto (198o otained a o pelnt sochron wih o stop

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