Lu-Hf total-rock isochron for the eucrite meteorites

Details Lu-Hf total-rock isochron for the eucrite meteorites Lu-Hf total-rock isochron for the eucrite meteorites

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.288..571p&link_type=abstract

Nature, vol. 288, Dec. 11, 1980, p. 571-574.

Computer Science

27

Geochronology, Meteoritic Composition, Stony Meteorites, Hafnium Isotopes, Lutetium Isotopes, Radioactive Age Determination

Scientific paper

The isotope Lu-176 (2.6% of natural lutetium) decays by beta(-) to Hf-176, with a long half life. The first Lu-Hf isochron is presented. The eucrite meteorites, a suite of planetary igneous rocks of known age, 4,550 Myr, define a 10-point total-rock isochron with a slope of 0.0934 + or - 40, leading to a value of 3.53 + or - 0.14 x 10 to the 10th yr for the beta(-) decay half life of Lu-176. The isochron intercept of 0.27973 + or - 12 gives the initial Hf-176/Hf-177 for the inner solar system at the time of accretion.

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