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Madarao volcano

• Volcanic rocks
• Multiple volcano
• middle Pleistocene (2 active stages: ca. 0.7 Ma and ca. 0.55 Ma)

• Lithofacies: Hypersthene augite andesite lava, Pyroclastic rocks
• Lithofacies (Minor): Augite andesite, Hornblende hypersthene augite andesite lava, Pyroclastic rocks

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

• Distribution: Mount Madarao, Iiyama city - Shinano city, Kamiminochi county, 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.)
• Yanagisawa et al. (2000) Geology of the Iiyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 144p. (in Japanese with English abstract 6p.)
• 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.)