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Title:
Age of meteorites and the earth
Authors:
Patterson, Claire
Affiliation:
AA(Division of Geological Sciences California Institute of Technology, Pasadena, California, USA)
Publication:
Geochimica et Cosmochimica Acta, Volume 10, Issue 4, p. 230-237. (GeCoA Homepage)
Publication Date:
10/1956
Origin:
ADS; ELSEVIER
Abstract Copyright:
(c) 1956 Elsevier Science B.V. All rights reserved.
DOI:
10.1016/0016-7037(56)90036-9
Bibliographic Code:
1956GeCoA..10..230P

Abstract

Within experimental error, meteorites have one age as determined by three independent radiometric methods. The most accurate method (Pb 207/Pb 206 gives an age of 4.55 ± 0.07 × 10 9yr. Using certain assumptions which are apparently justified, one can define the isotopic evolution of lead for any meteoritic body. It is found that earth lead meets the requirements of this definition. It is therefore believed that the age for the earth is the same as for meteorites. This is the time since the earth attained its present mass
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