K-Ar isochron dating of Zaire cubic diamonds

Details K-Ar isochron dating of Zaire cubic diamonds K-Ar isochron dating of Zaire cubic diamonds

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..710z&link_type=abstract

Nature (ISSN 0028-0836), vol. 323, Oct. 23, 1986, p. 710-712.

Computer Science

12

Argon Isotopes, Diamonds, Krypton Isotopes, Radioactive Age Determination, Zaire

Scientific paper

A K-Ar isochron dating method has been applied to ten diamonds from Zaire in order to avoid the problem of possible excess Ar-40 which occurs in conventional K-Ar dating of diamonds. The experimental data show good linear correlations in both the (Ar-40)-K and Ar-40/Ar-36-K/Ar-36 diagrams. These correlations must reflect either an isochron-type relationship or the trapping of an unknown component in the diamonds. In the former case the anomalously high age of 6.0 Gyr casts doubt on the assumption of uniformity in the isotropic abundance of K-40.

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