Photograph and analytical data of zircons from ash-fall tuff in the Kinbusan area in eastern Tottori Prefecture.

The location of analyzed sample is 35°34′42″N, 134°21′32″E. For details of the sample, refer Haji (2024, Figs. 1, 3; 10.5575/geosoc.2024.0027).

Fig. S1. (a) Photomicrograph and (b) cathodoluminescence images of the analyzed zircons. Yellow squares in (b) indicate ablation spots. The scale in (b) is 20 μm.

Table S1. Instrumentation and operating conditions of the femtosecond LA–MC–ICP–MS.(a)Laser–ablation (LA) system. (b)ICP–MS instrument.

Table S2. Isotopic data and U‒Pb ages of zircons with 2σ uncertainties (first routine). 

"*": discordant data. "y": data of the young cluster. "o": data of the old cluster.

Table S3. Isotopic data and U‒Pb ages of zircons with 2σ uncertainties (second routine). 

"*": discordant data. "y": data of the young cluster. "o": data of the old cluster.