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Inagi Formation (Otsuka, 1932) Takano, 1994
Invalid synonym: Hirao Formation, Nekata Formation
- Sedimentary facies: Washover and flood tidal delta of barrier islands, Forset bed of deltas, Lower offshore
- Sedimentary facies (Upper): Shore, Shallow marine
- Sedimentary facies (Middle): Mudflat, Inland bay (Brackish)
- Sedimentary facies (Lower): Fluvial
- Sedimentary facies: A cycle of regression - transgression sequence
- Lithofacies (Upper): Sands, Tuffaceous sands
- Lithofacies (Middle): Silt, Sands
- Lithofacies (Lower): Gravels
- Lithofacies (Minor): Lignite
- Sedimentary structure: Planar cross-stratification, Trough cross-stratification, Lenticular stratification
- Contemporaneous heterotopic facies (Interfingered): Kakio Formation
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Omaru - Koyodai, Inagi city, Tokyo; Anazawa shrine, Yanokuchi, Inagi city, Tokyo; Hodokubo - Misawa, Hino city, Tokyo; Onoji town - Shinkoji town, Machida city, Tokyo; Furusawa - Kurokawa, Asao ward, Kawasaki city, Kanagawa pref.
- Fossils (Upper): Shellfishes (Shallow marine), Plants, Pollen, Diatoms (Tidal flat), Pipe rocks
- Fossils (Lower): Metasequoia sp., Shellfishes (Inner bay), Pollen, Diatoms (Freshwater, Inner bay - Tidal flat)
- Tephra: KK, Shirobeta, Ng-YR, YU, PK, YM, Fr, Hr
- Suzuki et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.7, pp.343-356, DOI
- Ueki et al. (2013) Geology of the Hachioji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 137p. (in Japanese with English abstract 6p.)
- Suzuki and Murata (2011) Jour. Geol. Soc. Japan, vol.117, no.7, pp.379-397 DOI
- Oka et al. (1984) Geology of the Tokyo-Seinambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 148p. (in Japanese with English abstract 7p.)