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Nojiriko Formation Toyono Collaborative Research Group, 1962

Invalid synonym: Rokugatsu Formation, Tachigahana Formation

• Type locality: floor of Lake Nojiriko, Tachigahana, Shinano city, Kamiminochi county, Nagano prefecture
• Coherent formation
• late Pleistocene (49,410 - 17,460 yBP, ¹⁴C)
• Contemporaneous heterotopic facies: Nojiri Loam
• Correlation: Furuma Formation, Mure Formation, Sasagamine Formation, Nojiri Loam

• Sedimentary facies: Lacustrine
• Lithofacies: Sands, Silt, Peat
• Lithofacies (Minor): Scoria, Vitreous volcanic ash
• Sedimentary structures (Minor): Cross stratificaiton

• Thickness: ca. 28 m
• Upper limit: Conformity (Holocene strata)
• Lower limit: Conformity (Kannoki Formation)

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

• Distribution: Lake Nojiriko - Ikejiri river, Tachigahana, Shinano city, Kamiminochi county, Nagano pref.
• Fossils: Insects, Shellfishes, Diatoms, Pollen
• Fossils (Mammalia): Anser fabalis, Cervus cf. nippon, Microtus sp., Palaeoloxodon naumanni, Sinomegaceros yabei, Ursus arctos
• Fossils (Plants): Larix leptolepisPicea maximowiczii, Pinus koraiensis
• Fossils (Footprints): Palaeoloxodon naumanni, order Cetartiodactyla

• Nagamori et al. (2003) Geology of the Togakushi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 109p. (in Japanese with English abstract 3p.)
• Nakano et al. (2002) Geology of the Shiroumadake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 105p. (in Japanese with English abstract 5p.)