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Ichinoike volcano

• Type locality: western cliff of Lake Ninoike, Otaki city, Kiso county, Nagano prefecture
• Volcanic rocks
• late Pleistocene

• Lithofacies: Hornblende-bearing olivine augite hypersthene andesite, Hornblende olivine-bearing augite hypersthene andesite
• Lithofacies: Lava

• Source: Ichinoike crater, Mount Ontakeyama
• Running distance: ca. 5 - 8 km
• Upper limit: Unconformity (Sannoike Lava)
• Lower limit: Unconformity (Kongodo volcano, Okunoin volcano, Kusakidani volcano)

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

• Distribution: Lake Ninoike - Nigorikawa river - Sainokawara, Yukawa river, Otaki city, Kiso county, Nagano pref.; Hyoedani valley, Osaka town, Gero city, Gifu pref.
• Tephra: On-Yn

• Yamada and Kobayashi (1988) Geology of the Ontakesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 9p.)