THE LU ISOTOPIC COMPOSITION OF ACHONDRITES: CLOSING THE CASE FOR ACCELERATED DECAY OF (LU)-L-176
Studies of Lu-Hf isotope systematics in meteorites have produced apparent "ages" that are older than Pb-Pb ages and older than the estimated age of our solar system. One proposed explanation for this discrepancy is that irradiation by cosmic rays caused excitation of 176Lu to its short-lived isomer that then underwent rapid decay to 176Hf. This explanation can account for apparent excesses in 176Hf that correlate with Lu/Hf ratio. Mass balance requires that samples with measurable excess in...[Show more]
|Collections||ANU Research Publications|
|Source:||Astrophysical Journal Letters|
|Access Rights:||Open Access|
|01_Wimpenny_THE_LU_ISOTOPIC_COMPOSITION_OF_2015.pdf||180.21 kB||Adobe PDF|
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