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Tanasawa Tephra

• Tephra
• Pleistocene (0.22 Ma, FT)

• Lithofacies: Pumiceous tephra

• Thickness: 45 - 105 cm
• Host: Echi Formation

• Distribution: Tanasawa, Atsugi city, Kanagawa pref.

• Ueki et al. (2013) Geology of the Hachioji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 137p. (in Japanese with English abstract 6p.)