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Shinoike volcano

Invalid synonym: Gonoike Scoria

• Type locality: western wall of Lake Shinoike, Otaki city, Kiso county, Nagano prefecture
• Volcanic rocks
• late Pleistocene (ca. 36 ka, K-Ar)
• Correlation (Upper, Scoria agglomerate): On-Ki

• Lithofacies: Hornblende olivine-bearing augite hypersthene andesite, Hornblende-bearing augite hypersthene andesite, Augite hypersthene andesite
• Lithofacies: Lava (3 flow units), Scoria agglomerate
• Lithofacies (Minor): Scoria fall deposit
• Structures (Scoria agglomerate): Columnar joint

• Source: Lake Shinoike, Mount Ontakeyama
• Thickness (Lava): ca. 20 m
• Thickness (Scoria agglomerate, Upper): ca. 1 - 3 m
• Thickness (Scoria agglomerate, Lower): ca. 2 - 6 m
• Running distance: ca. 4 km
• Upper limit: Unconformity (Sannoike Lava)
• Lower limit: Unconformity (Mamakodake volcano, Middle Terrace Deposit)

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

• Distribution: Lake Shinoike, Otaki city, Kiso county, Nagano pref.; Kaidakogen - Tsumetagawa river - Onoshimanotaki fall, Kiso city, Kiso county, Nagano pref.

• Takeuchi et al. (1998) Geology of the Kiso-Fukushima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 94p. (in Japanese with English abstract 4p.)
• 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.)