Physics
Scientific paper
Apr 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995gecoa..59.2445a&link_type=abstract
Geochimica et Cosmochimica Acta, Vol. 59, No. 8, p. 2445 - 1456
Physics
Earth: Age
Scientific paper
Forty years ago, Patterson in his pioneering work on lead isotopes defined the age of the Earth and of the meteorites with 4.55 Ga. The authors reconsider the question of the age of the Earth and its relation to the age of the meteorites, and similar to Patterson's approach, they use lead isotope systematics. The meaning of an "age of the Earth" is evaluated in relation to the major early processes, end of accretion, core formation, and atmosphere extraction. Within this framework, the "age of the Earth" corresponds to the end of its accretion and to its early differentiation.
Allègre Claude J.
Göpel Christa
Manhes Gerard
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