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Takappyoyama Lava Igarashi et al., 1984

• Type locality: summit of Mount Takappyo, Kijimadaira city, Shimotakai county, Nagano prefecture
• Volcanic rocks
• Pleistocene (0.67 Ma, K-Ar)

• Lithofacies: Pyroxene andesite lava

• Thickness: 150 - 200 m
• Lower limit: Unconformity (Kayanotaira Pyroclastic Flow Deposit)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Mount Takappyo, Kijimadaira city, Shimotakai county, Nagano pref.

• Akahane et al. (1992) Geology of the Nakano District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 106p. (in Japanese with English abstract 4p.)