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Mizuoyamasancho Lava Kaneko, 1988

• Type locality: 940 m above sea level of the northwestern slope of the summit of Mount Mizuoyama, Nozawaonsen city, Shimotakai county, Nagano prefecture
• Volcanic rocks
• early Pleistocene (1.66 Ma, K-Ar)

• Lithofacies: Olivine-bearing hypersthene augite andesite lava

• Source: Mount Kenashiyama
• Thickness: 30 - 40 m
• Lower limit: Unconformity (Mizuoyama Lava, Mizuoyamachui Lavas)

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

• Distribution: summit of Mount Mizuoyama, Nozawaonsen city, Shimotakai county, Nagano pref.

• 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.)