Meteorite Phosphates Show Constant 176Lu Decay Rate Since 4557 Million Years Ago

Details Meteorite Phosphates Show Constant 176Lu Decay Rate Since 4557 Million Years Ago Meteorite Phosphates Show Constant 176Lu Decay Rate Since 4557 Million Years Ago

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sci...310..839a&link_type=abstract

Science, Volume 310, Issue 5749, pp. 839-841 (2005).

Computer Science

20

Scientific paper

The use of radioactive decay of 176Lu to 176Hf to study the evolution of the Earth requires a precise and accurate value for the 176Lu decay constant. Recent determinations of this decay constant by age comparison to the more precisely calibrated U-Pb isotopic system produced internally consistent but discrepant values between terrestrial minerals and meteorites. New highly radiogenic Lu-Hf data for phosphate minerals from Richardton (ordinary chondrite) and Acapulco (primitive achondrite) yield decay constant values of 1.864 × 10-11 +/- 0.016 × 10-11 and 1.832 × 10-11 +/- 0.029 × 10-11 year-1, respectively, identical to the value determined from terrestrial minerals.

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