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Tentokuji Formation Omura, 1926

• Type locality: Tentokuji, Akita city, Akita prefecture
• Coherent formation
• late Pliocene - early Pleistocene (Diatoms, Foraminifera)
• Correlation: Maito Formation
• Correlation (Upper): Maruyama Formation
• Correlation (Lower): Tateyama Formation

• Sedimentary facies: Marine
• Sedimentary facies: Turbidite
• Water temperature: Warm ocean current (Foraminifera)
• Depth of water: Upper - lower sublittoral zone (Foraminifera)
• Lithofacies: Siltstone
• Lithofacies (Minor): Sandstone, Tuffaceous sandstone, Conglomerate, Acidic tuff, Sandy tuff
• Sedimentary structures: Cross stratification, Graded bedding
• Paleocurrent: East to West

• Thickness: 150 - 1,500 m
• Upper limit: Conformity (Manaitayama Volcanic Rocks), Conformity, partly unconformity (Nakazawa Formation, Sasaoka Formation), Unconformity (High I Terrace Deposit, Katanishi Formation, Hashimoto Formation, Younger Fan Deposits, Nishime Formation, Ishihagegawa Volcanic Rocks)
• Lower limit: Conformity (Yunokoshiyama Rhyolite), Conformity partly unconformity (Funakawa Formation), Conformity? (Subari Andesite), Unconformity (Yonegamori Dacite)

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

• Distribution: Tentokuji, Akita city, Akita pref.; Osugo creek, Inai, Ikawa city, Minamiakita county, Akita pref.; Hanawakawa, Minehama, Noshiro city, Akita pref.; Taihei, Akita city, Akita pref.; Sakai river, Akita city, Akita pref.; Futago, Iwaki, Yurihonjo city, Akita pref.; Futatsui town, Noshiro city - Fujisato city, Yamamoto county, Akita pref.; Tokiwa river, Noshiro city, Akita pref.; Sarukawa seashore - Miyazawa seashore, Oga city, Akita pref.; Yatsuomote, Noishi, Oga city, Akita pref.; Sotooka - Shitobashi - Tatsuko, Mitane city, Yamamoto county, Akita pref.; Hadachi, Noshiro city, Akita pref.; Tomita - Terasawa, Gojome city, Minamiakita county, Akita pref.; Otomo, Shimoshinjo - Shirayama, Kamishinjo, Akita city, Akita pref.; Kinshoji - Shimokitate - Kamikitate - Saraminai, Akita city, Akita pref.; Iwamisannai - Jinnai river, Kawabe, Akita city, Akita pref.; Utsuno - Noda, Kyowa, Daisen city, Akita pref.; Osakagotera - Kongoji, Daisen city, Akita pref.; Harukizawa, Nangai, Daisen city, Akita pref.; Oyakawa - Chojayashiki - Matsugasaki - Sankawa - Fukuyama - Kaneyama - Miyazawa - Kumanosawa - Nakamata - Yagiyama pass, Yurihonjo city, Akita pref.; Oguni - Shirahama - Kotoura - Innai - Katsurazaka - Kisakata, Nikaho city, Akita pref.; Deto, Nishime town, Yurihonjo city, Akita pref.; Tate - Kawanishi, Yurihonjo city, Akita pref.; Kawabe, Yashima town, Yurihonjo city, Akita pref.; Yunosawa, Chokai town, Yurihonjo city, Akita pref.; Sarukura, Yurihonjo city, Akita pref.
• Fossils: family Eschrichiidae (Rib), Fish scales, Echinoids (Linthia nipponica), Brachiopods (Hemithyris psittacea, Terebratalia cf. coreanica, Terebratalia gouldi, Terebratalina crossei), Radiolarians (Ommatartus penultimus, Ommatartus tetrahalamus, Spongodiscus spp., Stichocorys peregrina), Plants, Pollen, Trace fossils
• Fossils (Lower): Makiyama chitanii
• Fossils (Shellfishes): Acila gottschei, Acila cf. insignis, Acila nakazimai, Anadara amicula, Anadara amicula rotunda, Anadara cf. subcrenata, Astarte borealis, Beringius sp., Cadulus sp., Chlamys cosibensis, Clinocardium ciliatum, Clinocardium nuttallii, Clinocardium shinjiense, Conchocele bisecta, Conchocele nipponica, Cornula sp., Dentalium weinkauffi, Dosinia japonica, Felaniella usta, Fulgoraria prevostina, Glycymeris nipponica, Glycymeris yessoensis, Limopsis adamsiana, Limopsis tokaiensis, Liocyma sp., Lucinoma annulata, Macoma calcarea, Macoma incongrua, Macoma tokyoensis, Mactra sp., Mangilea parva, Mercenaria chitaniana, Mercenaria stimpsoni, Mizuhopecten poculum, Mizuhopecten yessoensis, Mya cuneiformis, Nassarius sp., Natica tugaruana, Nemocardium samarangae, Neptunea sp., Nucula sp., Nuculana pernula, Nuculana robai, Nuculana yokoyamai, Ophiodermella miyatensis, Panomya simotomensis, Plicifusus sp., Portlandia japonica, Protothaca adamsi, Rectiplanes sp., Saccella sp., Serripes groenlandica, Siphonalia spadicea, Spisula voyi, Tectonatica janthostomoides, Thracia kakumana, Turritella fortilirata, Turritella nipponica, Turritella saishuensis motidukii, Umbonium akitanum, Venericardia ferruginea, Venericardia prolongata nakamurai, Yabepecten tokunagai, Yoldia notabilis, Yoldia thraciaeformis
• Fossils (Foraminifera): Ammobaculites sp., Ammonia beccarii, Ammonia ketienziensis angulata, Angulogerina angulosa, Angulogerina hughesi, Angulogerina kokozuraensis, Angulogerina hughesi, Anomalina glabrata, Astrononion hamadaense, Astrononionium bliatulum, Baggina totomiensis, Barhysiphon sp., Bolivina decussata, Bolivina pacifica, Bolivina robusta, Bolivina seminula, Bolivina substriatula, Bolivinita quadrilatera, Bolivinuta guadrilatera, Buccella frigida, Buccella frigidus calidus, Buccella inusitata, Buccella nipponica, Bulimina aculeata, Bulimina auriculata, Bulimina exilis tenuata, Bulimina marginata, Bulimina nipponica, Bulimina nojimaensis, Bulimina cf. pupoides, Bulimina pyrula, Buliminella elegantissima, Cancris auriculus, Cassidulina carinata, Cassidulina delicata, Cassidulina japonica, Cassidulina kasiwazakiensis, Cassidulina cf. margareta, Cassidulina norcrossi, Cassidulina subglobosa, Cassidulina sublimbata, Cassidulina yabei, Cibicides aknerianus, Cibicides lobatulus, Cibicides pseudoungerianus, Cibicides cf. reflugens, Cibicides ungerianus, Cribroelphidium bartetti, Cribroelphidium clavatum, Cribroelphidium yabei, Cribrostomoides cf. subglosum, Cyclammina cancellata, Cyclammina japonica, Cyclammina pusilla, Dentalina frobisherensis, Dentalina setanaensis, Diocibicides biserialis, Diocibicides perforata, Echigoina hataii, Eggerella sp., Eilohedra nipponica, Elphidium advenum, Elphidium clavatum, Elphidium crispum, Elphidium etigoense, Elphidium hughesi foraminosum, Elphidium jenseni, Elphidium subarcticum, Elphidium subgranulosum, Elphidium subgromulosum, Epistominella naraensis, Epistominella pulchella, Eponides nipponicus, Eponides umbonata, Fissulina echigoensis, Gavelinopsis sp., Glandulina nipponica, Globigerina borealis, Globigerina bulloides, Globigerina calida, Globigerina foliata, Globigerina inflata, Globigerina incompta, Globigerina pachyderma, Globigerina quinqueloba, Globigerinita qlutinata, Globigerinita uvula, Globigerinoides cyclostoma, Globigerinoides ruber, Globigerinoides triloba, Globobulimina auriculata, Globocassidulina subglobosa, Globoquadrina asanoi, Globoquadrina obessa, Globoquadrina dutertrei, Globoquadrina himiensis, Globoquadrina kagaensis, Globorotalia inflata, Globorotalia tumida, Goesella schencki, Gyroidina orbicularis, Gyroidinoides sordanii, Hanzawaia nipponica, Haplophragmoides cf. compressum, Haplophragmoides cf. evolutum, Haplophragmoides renzi, Haplophragmoides cf. subglobosum, Hoeglundina elegans, Islandiella japonica, Islandiella margareta, Islandiella norcrossi, Islandiella cf. yabei, Lagena apiopleura, Lagena acticosta, Lagena clavata, Lagena gracilis, Lagena hispidula, Lagena perlucida, Lagena sulcata, Lenticulina lucida, Loxostoma aff. limbatum, , Loxostomoides bradyi, Martinottiella communis, Martinottiella nodulosa, Melonis barleeanum, Melonis nicobarense, Melonis pompilioides, Miliammina echigoensis, Multifidella nodulos, Neoconorbina stachi, Nonionella pulchella, Nonionella stella, Nonion grateloupi, Nonion japonicum, Nonion labradricum, Nonion nicobarense, Nonion pompilioides, Oolina hexagona, Orbulina universa, Oridorsalis umbonatus, Pararotalia nipponica, Planulina wuellerstorfi, Plectofrondicularia sp., Praeglobibulimina pupoides, Pseudoeponides cf. nakazatoensis, Pseudononion grateloupi, Pseudononion japonicum, Pseudopolymorphina suboblonga, Pseudorotalia gaimardii, Puliminella elegantissima, Pullenia apertula, Pullenia bulloides, Pullenia salisburyi, Quinqueloculina seminulum, Rectobolivina raphana, Rosalina bradyi, Rotalia beccarii, Siphotextularia sp., Sphaeroidina bulloides, Sphaeroidina cf. compacta, Spiroloculina communis, Spirosigmoilinella compressa, Steinforthia sp., Textularia schencki, Trifarina kokozuraensis, Trochammina sp., Uvigerina akitaensis, Uvigerina asanoi, Uvigerina canariensis, Uvigerina excellens, Uvigerina peregrina derupta, Uvigerina proboscidea, Uvigerina subperegrina, Uvigerina yabei, Valvulineria sadonica
• Fossils (Diatoms): Actinocyclus ehrebergii, Actinocyclus ingens, Actinocyclus ocholensis, Actinocyclus octonarius, Actinocyclus oulatus, Actinoptychus senartius, Actinoptychus undulatus, Amphora sp., Chaetoceros sp., Cocconeis costata, Cocconeis disculus, Cocconeis scutellum, Cocconeis vitrea, Coscinodiscus marginatus, Coscinodiscus pustulatus, Cyclotella chaetoceros, Cyclotella comta, Delphineis ischaboensis, Delphineis surirella, Denticulopsis kamtschatica, Denticulopsis seminae, Denticulopsis seminae var. fossilis, Diploneis smithii, Grammatophora sp., Melosira granulata, Melosira granulata var. angustissima, Melosira italica, Melosira sulacata, Navicula directa, Neodenticula kamtschatica, Paralia sulcata, Pseudoeunotia doliolus, Rhaphoneis amphiceros, Rhaphoneis angustata, Rhaphoneis surirella, Rhizosolenia curvirostris, Rhizosolenia praebergonii, Rhizosolenia styliformis, Stephanopyxis turris, Thalassionema hirosakiensis, Thalassionema nitzschioides, Thalassionema nitzschioides var. parva, Thalassiosira antiqua, Thalassiosira eccentrica, Thalassiosira excentica, Thalassiosira manifesta, Thalassiosira nidulus, Thalassiosira oestrupii, Thalassiosira praeconvexa, Thalassiosira temperei, Thalassiosira zanbelinae, Thalassiothrix longissima, Trachyneis aspera
• Fossils (Calcareous nannofossils): Braarudosphaera bigelowii, Calcidiscus leptoporus, Coccolithus pelagicus, Cyclococcolithus leptoporus, Discolithina japonica, Gephyrocapsa spp., Reticulofenestra spp., Syracosphaera sp.

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