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Tanohata Formation (Yabe and Yehara, 1913) Hanai et al., 1968
Invalid synonym: Moshi Sandstone, Tanohata Sandy Shale
- Type locality: Hideshima island, Miyako city, Iwate prefecture
- Coherent formation
- Ezo forearc basin
- Early Cretaceous, Aptian (Ammonoids)
- Sedimentary facies: Marine
- Sedimentary facies (Upper): Central part of a bay, or Inner shelf - outer shelf
- Sedimentary facies (Lower): Bay-head delta front, Tsunami deposit
- Lithofacies (Upper): Interbedded siltstone and sandstone
- Lithofacies (Lower): Sandstone
- Lithofacies (Lower, Minor): Conglomerate
- Sedimentary structures: Trough cross-stratification, Hummocky cross-stratification, Parallel stratification
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Hideshima - Masaki, Miyako city, Iwate pref.; Moshi, Iwaizumi city, Shimohei county, Iwate pref.; Hideshima island, Miyako city, Iwate pref.; Heipe seashore - Raga seashore - Koikorobe, Tanohata city, Shimohei county, Iwate pref.
- Fossils: Ammonoids (Cheloniceras (Epicheloniceras) sp.), Belemnoids (Neohibolites miyakoensis), Gastropods (Tylostoma miyakoense), Echinoids, Corals(Astrocoenia japonica), Crinoids(Isocrinus sp.), Calcareous algae (Pterophyton miyakoense), Foraminifera (Orbitolina discoidea-conoidea ezoensis), Sponges (Eusiphonella? japonica), Trace fossils
- Fossils (Bivalves): Amphidonte (Ceratostreon) yabei, Astarte (Nicaniella) minor, Eriphyla (Miyakoella) miyakoensis, Lopha (Arctostrea) carinata, Nagaoella corrugata, Nipponitrigonia, Ostrea, Pterotrigonia hokkaidoana, Rudists, Spondylus decortus
- Urakawa et al. (2017) Jour. Geol. Soc. Japan, vol.123, no.3, pp.121-130 DOI
- Umetsu et al. (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.82-95 DOI
- Shimazu et al. (1970) Geology of the Taro District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 6p.)