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IH Tephra

Abbr.: IH

• Type locality: Sakuna, Tateyama city, Chiba prefecture
• Tephra
• Pliocene - Pleistocene
• Correlation: Hn-8

• Lithofacies (Upper): Scoria
• Lithofacies (Lower): Vitreous volcanic ash
• Lithofacies (Lower, Minor): Scoria

• Host: Higashinagata Formation
• Thickness (Upper): 49 cm
• Thickness (Lower): 32 cm

• Distribution: Sakuna, Tateyama city, Chiba pref.

• Kawakami and Shishikura (2006) Geology of the Tateyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 82p. (in Japanese with English abstract 5p.)