The cause of misleading K-Ar ages of diamonds, actually young but apparently older than the solar system

Akimasa Masuda, Tasuku Akagi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Zashu et. al. (1986) found an isochron-like high correlation between 40Ar and potassium in Zaire cubic diamonds, which appears to correspond to 6.0 Gyr. Theoretically, in view of the covalent C-C bonding of diamond and the chemical natures of electrically neutral Ar atoms and positively charged K+ions, the partition coefficient of Ar must be much higher than that of K+ in the diamond. As a result, this effect leads to a false K-Ar ages for the diamonds. Along this line of reasoning, somewhat modified interpretations are also presented.

Original languageEnglish
Pages (from-to)139-142
Number of pages4
JournalGEOCHEMICAL JOURNAL
Volume22
Issue number3
DOIs
Publication statusPublished - 1988
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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