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Tomioka Formation Ome City, 1995
- Type locality: Nariki, Ome city, Tokyo
- Coherent formation
- late Pliocene
- Correlation: Hanno Formation
- Sedimentary facies: Fluvial
- Lithofacies: Gravels
- Sedimentary structures: Channel structure, Imbricate structure
- Paleocurrent: to East
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Nariki - Tomioka, Ome city, Tokyo
- Ueki and Sakai (2007) Geology of the Ome District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 189p. (in Japanese with English abstract 5p.)