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Hashimoto Tephra

Invalid synonym: Takatsukayama Tephra

• Tephra
• Pleistocene (0.49, 0.41, 0.35 Ma, FT)
• Correlation: At-3up

• Lithofacies: Volcanic ash

• Thickness: Several - A few dozen cm
• Host: Takatsukayama Marine Clay Member

• Distribution: Takatsukayama, Tarumi ward, Kobe city, Hyogo pref.; Shizuoka pref.

• Nakashima et al. (2008) Geology of the Toyohashi and Tahara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 113p. (in Japanese with English abstract 3p.)
• Ozaki et al. (1995) Geology of the Hojo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 101p. (in Japanese with English abstract 6p.)
• Huzita and Maeda (1985) Geology of the Osaka-Seinambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 5p.)
• Huzita and Maeda (1984) Geology of the Suma District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 101p. (in Japanese with English abstract 7p.)