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Numamachi Formation Kondo in Oishi, 1933
Invalid synonym: Numamachi Alternation
- Type locality: Shimokita, Furukawa town, Hida city, Gifu prefecture
- Coherent formation
- Late Jurassic
- Sedimentary facies: Marine, Terrestrial
- Sedimentary facies: Shallow marine delta
- Sedimentary facies: Flood plain, river channel
- Lithofacies: Interbedded sandstone and mudstone
- Lithofacies (Minor): Conglomerate, Sandstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shimiokita, Furukawa town, Hida city, Gifu pref.; Osaka pass, Kamitakara town, Takayama city, Gifu pref.; Kiridani, Kokufu town, Takayama city, Gifu pref.; Kurigadani, Kawai town, Hida city, Gifu pref.
- Fossils: Bivalves (Myrene (Mesocorbicula) tetoriensis)
- Fossils (Plants): Cladophlebis denticulata, Cladophlebis distans, Cladophlebis exileformis, Coniopteris burjensis, Czekanowskia rigida, Dictyozamites kawasakii, Equisetites ushimarensis, Ginkgoidium nathorsti, Ginkgoites digitata, Marchantites yabei, Nilssonia kotai, Onychiopsis elongata, Podozamites lanceolatus, Podozamites reinii, Pseudocycus? acutifolia, Sphenpteris nitidula, Sphenpteris (Ruffordia) gaepperli, Taeniopteris emarginata, Xenoxylon latiporosum
- Matsukawa et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.8, pp.417-437 DOI
- Nozawa et al. (1975) Geology of the Hida-Furukawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 9p.)