Chronology Research on Eocene Trachyte in Zoumaying, Sanshui Basin

Abstract:

Trachyte in Zoumaying was erupted in Eocene by 40Ar-39Ar age-dating in previous studies. Multielement Geochemistry analysis and U-Pd radiochronology were introduced on zircons from trachyte in Zoumaying in this paper. The SiO2 and K2O+Na2O contents of trachytes vary between 58.59% to 68.99%, and 10% to 11%. About twenty zircons were selected from trachyte sample with fractures and zonal structure, and most of them were inheritable magmatic zircons. The result of radiochronology on zircon is 60Ma which is similar with the former result as 53.2±0.2Ma.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 1571-1574
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.1571
• Online since: January 2013
• Authors: Zhang Wei, Nian Qiao Fang
• Keywords: SanShui Basin, Trachyte, U-Pb Radiochronology, Zircon

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