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Minochi Formation Akahane, 1990

• Type locality: Okura, Toyono city, Nagano city, Nagano prefecture
• Coherent formation
• Pleistocene
• Contemporaneous heterotopic facies: Yashiki Formation
• Correlation: upper Sarumaru Formation
• Intruded by: Motodoriyama Volcanic Rocks

• Sedimentary facies: Terrestrial
• Lithofacies (Upper): Conglomerate, Sandy siltstone, Tuff breccia, Mudflow deposit
• Lithofacies (Upper, Minor): Biotite tuff
• Lithofacies (Lower): Conglomerate, Sandstone

• Thickness: 250 - 300 m
• Upper limit: Conformity (Sarumaru Formation), Unconformity (Mure Debris Flow Deposit, Takaoka Sand and Silt Member)
• Lower limit: Conformity (Ogawa Formation)

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

• Distribution: Okura, Toyono city, Nagano city, Nagano pref.; Torii river, Nagano city, Nagano pref.; Kaesa, Nakano city, Nagano pref.

• 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.)