Concordance between K-Ar ages of K-feldspar and fission-track ages of zircon in Cretaceous granitic rocks from Japan

Ken Shibata, Tohru Danhara, Hideo Takagi

研究成果: Article査読

8 被引用数 (Scopus)

抄録

The closure temperature for zircon in the fission-track dating has been poorly estimated because of interpolation between minerals with very different closure temperatures. We find that K-Ar ages and fission-track ages of coexisting K-feldspars and zircons in Cretaceous granitic rocks from Japan are con-cordant within the experimental errors, with the exception of a few cataclastically deformed samples near the Median Tectonic Line. The concordance between the two systems suggests that the closure temperature for zircon in the fission-track system may be lower than 200°C.

本文言語English
ページ(範囲)187-192
ページ数6
ジャーナルGEOCHEMICAL JOURNAL
24
3
DOI
出版ステータスPublished - 1990

ASJC Scopus subject areas

  • 地球物理学
  • 地球化学および岩石学

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