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BZ Tephra

Abbr.: BZ

• Type locality: Denoo, Tateyama city, Chiba prefecture
• Tephra
• Pliocene - Pleistocene

• Lithofacies (Upper): Pumiceous - scoriaceous sandstone
• Lithofacies (Middle): Vitreous volcanic ash, Pumice
• Lithofacies (Lower): Vitreous volcanic ash, Pumice

• Host: Higashinagata Formation, Takigawa Formation
• Thickness (Upper): 10 cm
• Thickness (Middle): 10 cm
• Thickness (Lower): 14 cm

• Distribution: Denoo, 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.)