[ Top ] [ Japanese ]

Isbt Hiranaka et al., 2009

Abbr.: Isbt

• Type locality: Sumon, Suhara, Uonuma city, Niigata prefecture
• Tephra
• late Miocene

Correlation: Otbt, Dtbt

• Host: Tsunagi Formation

• Distribution: Sumon, Suhara, Uonuma city, Niigata pref.

• Hiranaka et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.4, pp.177-186 DOI