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Toyota Alternation Member Kobiwako Research Group, 1977
- Type locality: Toyota - Nakayama, Hino city, Gamo county, Shiga prefecture
- Coherent formation
- Pleistocene
- Sedimentary facies: Terrestrial
- Sedimentary facies: Point bar
- Lithofacies (Upper): Sandy silt, Silt
- Lithofacies (Lower): Sands
- Sedimentary structures: Trough cross-stratification, Planar cross-stratification, Parallel stratification
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Toyota - Nakayama, Hino city, Gamo county, Shiga pref.; Yama, Minakuchi town, Koka city, Shiga pref.
- Tephra: Kasuga, Tokutani
- Nakano et al. (2003) Geology of the Minakuchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 83p. (in Japanese with English abstract 3p.)
- Yoshida et al. (2003) Geology of the Omi-Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 3p.)
- Ishida et al. (1984) Geology of the Hikone-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 6p.)