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Ikenotaira-bokujo Lavas

• Volcanic rocks
• Pleistocene

• Lithofacies: Hypersthene augite andesite lava (7 - 8 flow units)

• Source: Mount Chausuyama or Mount Shimagareyama
• Distribution (Width): 500 - ca. 1,000 m
• Thickness (A unit): 1 - 15 m
• Running distance: 10 km or more
• Upper limit: Chausuyama Lava
• Lower limit: Inagodake Lavas, Unconformity (Oishigawa Scoria, Kasuga Volcanic Rocks)

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

• Distribution: Yachiho farm - Lake Komadeike - Oishigawa river, Sakuho city, Minamisaku county, Nagano pref.

• Nishiki et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.5, pp.193-211 DOI
• Kawachi (1974) Geology of the Tateshinayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 5p.)