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ST Tephra

Abbr.: ST

• Type locality: Sakasagawa, Noshiro city, Akita prefecture
• Tephra
• Pleistocene

• Source: Ontake volcano, Nagano pref., Japan
• Host: Kakumazaki Mud Member, Katanishi Formation

• Distribution: Sakasagawa, Noshiro city, Akita pref.

• Shiraishi et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.33-50 DOI