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Hataya Formation (Kitamura, 1980) Ishii et al., 1982

• Type locality: Takagi river, Hataya, Matsushima city, Miyagi county, Miyagi prefecture
• Coherent formation
• Miocene
• Correlation: Irisugaya Formation

• Lithofacies: Tuffaceous sandstone
• Lithofacies (Minor): Tuff

• Thickness: 180 m
• Upper limit (Bangamoriyama Formation, Kashimadai hill): The boundary between massive medium sandstone and overlying pumice-bearing breccia coarse sandstone
• Upper limit (Bangamoriyama Formation, Matsushima hill): Bottom of relatively well-sorted quartz-rich sandstone
• Upper limit: Unconformity (Upper Member)
• Lower limit: Conformity (Mitsuya Formation), Unconformity (Middle Pumice Tuff Member, Siltstone Member, Ajiri Formation, Shiogama Formation, Rifu Formation)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Takagi river, Hataya, Matsushima city, Miyagi county, Miyagi pref.; Hanaremori, Rifu city, Miyagi county, Miyagi pref.
• Fossils: Echinoids (Spantangoid gen. et sp. indet)
• Fossils (Shellfishes): Epitonium sp., Lucinoma acutilineata, Macoma incongrua, Mya sp., Pecten sp., Portlandia (Portlandella) japonica
• Fossils (Diatoms): Actinocyclus ehrenbergii, Actinocyclus ellipticus, Actinocyclus ingens, Actinoptychus undulatus, Cocconeis vitrea, Coscinodiscus endoi, Coscinodiscus marginatus, Coscinodiscus symbolophorus, Coscinodiscus cfr. yabei, Denticulopsis hustedtii, Denticulopsis hyalina, Denticulopsis lauta, Denticulopsis nicobarica, Diploneis spp., Goniothecium rogersii, Grammatophora sp., Hemiaulus aff. polymorphus, Goniothecium tenue (<= Ikebea spp.), Kisseleviella carina, Medialia splendida, Melosira sol, Melosira sulcata, Nitzschia challengeri, Pseudopodosira aff. hyalina, Pterotheca subulata, Rhabdonema japonicum, Rhaphoneis miocenica, Rhizosolenia miocenica, Rhizosolenia styliformis, Rossiella praepaleacea, Rouxia californica, Rouxia peragalli, Stephanogonita hanzawae, Stephanopyxis spp., Stictodiscus kittonianus, Synedra miocenica, Thalassionema hirosakiensis, Thalassionema nitzschioides, Thalassiosira leptopus, Thalassiothrix longissima, Trochosira spinosa

• Ishii et al. (1982) Geology of the Matsushima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 9p.)