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1st stage

• Volcanic rocks
• Stratovolcano
• Pleistocene (ca. 0.25 or later)

• Sedimentary facies: Lava flow, Pyroclastic deposits
• Sedimentary facies (Minor): Debris avalanche deposit
• Lithofacies: Pyroxene andesite
• Lithofacies (Minor): Basalt, Hornblende dacite

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

• Distribution: Nagano pref.

• Nagamori et al. (2003) Geology of the Togakushi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 109p. (in Japanese with English abstract 3p.)