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Bo Tephra Mizuno et al., 1987

Abbr.: Bo

• Type locality: Bonoya, Takahashi, Kikukawa city, Shizuoka prefecture
• Tephra
• Pliocene - early Pleistocene

• Lithofacies: Volcanic ash

• Host: Horinouchi Alternation
• Thickness: 10 - 15 cm

• Distribution: Bonoya, Takahashi, Kikukawa city, Shizuoka pref.; Kadoya, Omaezaki city, Shizuoka pref.

• Sugiyama et al. (1988) Geology of the Omaezaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 153p. (in Japanese with English abstract 6p.)