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Sugota Formation (Otuka, 1936) Katayama, 1941
Invalid synonym: Upper Takasegawa Formation
- Sedimentary facies: Marine
- Depth of water: Shallow marine (Fossils)
- Lithofacies (Main part): Sandstone, Conglomerate
- Lithofacies (Main part, Minor): Mudstone, Acidic tuff
- Lithofacies (Main part, Basal): Conglomerate
- Sedimentary structures: Cross stratification
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Sugota - Nagaseno - Mount Nagane - Noshinai - Ogoya - Agenoue - Kohabiro - Taki - Mitsukatamori - Okoto - Ofuki river - Katsuradai - Tateai - Ukibuta, Yurihonjo city, Akita pref.; Mizusawa - Niiyama, Omonogawa town, Yokote city, Akita pref.; Karuizawa - Kamitomai - Tashiro - Shimosenjo - Nishimonai - Iizawa, Ugo city, Ogachi county, Akita pref.; Susunai - Arasawadaira - Jinego - Akakura - Sunago - Koshiki pass, Chokai town, Yurihonjo city, Akita pref.; Minamizawa, Innai, Yuzawa city, Akita pref.; Kamihata - Sekiguchi, Yuzawa city, Akita pref.
- Fossils: Mammalia (Desmostylus hesperus japonicus, Eumetopias? sp.), Shark (Carcharodon megalodon, Galeocerdo aduncus, Teeth), Echionoids (Echinolampas yoshiwarai), Sponges (Aphrocallistes sp.), Balanus sp., Silicified woods
- Fossils (Bivalves): Acesta goliath, Acila divaricata submirabilis, Anadara makiyamai, Anadara cf. ogawai, Anadara cf. watanabei, Ancistolepis sp., Anisocorbula ohiroi, Anomia sp., Atrina (Servatrina) sp., Babylonia kozaiensis, Callista chinensis, Chelyconus tokunagai, Chlamys akitana, Chlayms cosibensis hanzawae, Chlamys kotakae, Chlamys cf. ingeniosa, Chlamys ishidae, Chlamys kaneharai, Chlamys nisataiensis, Chlamys cf. yabei, Clemetia popyracea, Clinocardium shinjiense, Conus (Chelyconus) tokunagai, Coptothyris grayi, Crassatellites suyamensis, Crassostrea gravitesta, Cryptonatica sp., Cultellus izumoensis, Cyclina (Cyclinorbis) lunulata, Cyclina japonica, Dentalium weinkaufii, Dentalium yokoyamai, Diodora m-katayamai, Doliocassis cf. japonica, Dosinia kaneharai, Dosinia kaneharai kannoi, Dosinia (Phacosma) nomurai, Eocylichna sp., Epitonium sp., Eucrassatella osawanoensis, Euspira meisensis, Felaniella cf. ferruginata, Fissidentalium cf. yokoyamai, Fulgoraria rupestris, Fulgoraria tokunagai, Glycymeris cisshuensis, Glycymeris vestitoides, Kotorapecten kagamianus, Kotorapecten yamasakii iwakiensis, Leukoma itoigawae, Limatula japonica, Limatula kurodai, Limea sp., Limopsis sp., Liocima sp., Liracassis japonica, Lucinoma acutilineata, Lucinoma murakawai, Lutraria sp., Macoma izurensis, Macoma cf. optiva, Masudapecten iwasakiensis, Masudapecten masudai, Mizuhopecten kimurai, Mizuhopecten kimurai murayamai, Mizuhopecten kimurai ugoensis, Mizuhopecten yamasakii, Modiolus yasuhiroi, Mya cuneiformis, Mya japonica, Nanaochlamys notoensis, Nassarius (Zeuxis) minoensis, Nemocardium samarangae, Neptunea sp., Neverita caticazae, Notoacmaea schrencki, Nuculana sp., Ostrea gravitesta, Palliolum peckami, Panomya simotomensis, Panope japonica, Panope nomurai, Paphia suzuensis, Phalium yokoyamai, Pillucina sp., Pitar cf. itoi, Pitar cf. semeliformis, Placopecten akihoensis, Placopecten nomurai, Placopecten protomellitus, Puncturella nobilis, Saccella sp., Sinum ineptum, Sinum yabei, Siratoria siratoriensis, Solen sp., Tectonatica sp., Tectura sp., Teredo sp., Thracia sp., Tracycardium (Vasticardium) ogurai, Turritella s-hataii, Vasticardium ogurai, Venericardia ferruginea, Venericardia cf. minoensis, Venericardia siogamensis
- Fossils (Brachiopods): Coptothyris grayi, Hemithyris peculiaris, Macandrevia nipponica, Terebratalia asanoi, Terebratalia gouldii, Terebratalia innaiensis, Terebratalia tenuis, Terebratulina akitana, Terebratulina crossei, Terebratulina japonica, Terebratulina honshuensis, Terebratulina tohokuensis
- Fossils (Lower, Daijima-type flora): Acer sp., Alangium aequalifolium, Alnus protojaponica, Carpinus cfr. carpinoides, Cinnamomum lanceolatum, Cyclobalanopsis mandraliscae, Cyperacites sp., Humulus cfr. palaeolupulus, Ilex ohashii, Juglans japonica, Liquidambar mioformosa, Machilus ugoana, Metasequoia occidentalis, Pasanea nipponica, Phyllites sp., Poacites sp., Pseudotsuga japonica, Pterocarya asymmetrosa Pterocarya ezoana, Pterocarya protostenoptera, Quercus miovariabilis, Rhus miosuccedanea, Salix sp., Ulmus elegantior, Ulmus longifolia, Ulmus subparvifolia, Zelkova ungeri
- Fossils (Foraminifera): Alanbamina japonica, Amphicoryna fukushimaensis Angulogerina kokozuraensis, Anomalina glabrata, Astacolus sp., Astrononion cf. hamadaense, Astrononion italicum, Astrononion aff. umbilicatulum, Baggina notoensis, Bolivina cf. catanensis, Bolivina marginata masudai, Buccella frigida, Buccella tanaii, Bulimina striata, Bulliminella elegantissima tenuis, Cassidulina depressa, Cassidulina cf. japonica, Cassidulina margareta, Cassidulina pacifica, Cassidulina cf. sublimbata, Cassidulina cf. yabei, Cassidulinoides sp., Chilostomella sp., Cibicides cf. lobutulus, Cibicides pseudoungerianus, Cibicides tanai, Dentalina insecta, Discorbinella sp., Discorbitula sp., Echigoina aomoriensis, Ehrenbergina sp., Eilohedra cf. nipponica, Elphidiella momiyamensis, Elphidium cf. subarticum, Elphidium tsudai, Epistominella pulchella, Fissurina spp., Frondicularia notoensis, Fursenkoina sp., Gavelinopsis hatakeyamai, Glabratella sp., Globigerina spp., Globigerinita glutinata, Globigerinoides japonicus, Globigerinoides trilobus, Globobulimina sp., Globoquadrina spp., Globorotalia birnageae, Globorotalia denseconnexa, Globorotalia mayeri, Globorotalia peripheroronda, Globorotalia praescitula, Globorotalia quinifalcata, Globorotalia scitula praescitula, Gyroidina orbicularis, Gyroidina planulata, Hanzawaia tagaensis, Hastigerina siphonifera praesiphonifera, Heronallenia sp., Heterolepa haidingerii, Lagena apiopleura, Lenticulina sp., Melonis nicobarensis, Melonis pompilioides, Nodosaria longiscata, Nodosaria tosta, Nonionella sp., Nonion kidoharaense, Oolina costata, Oridorsalis umbonatus, Pararotalia cf. nipponica, Planulina nipponica, Pseudononion subcostata, Pseudoparrella cf. naraensis, Pullenia bulloides, Pullenia quinqueloba, Quinqueloculina spp., Rosalina cf. isabelleana, Siphotextularia sp., Sphaeroidina japonica, Stilostomella japonica, Stilostomella lepidula, Uvigerina proboscidea, Valvulineria sp.
- Fossils (Radiolarians): family Acanthodesmiidae, Axoprunum sp., Calocycletta cf. caepa, Cornutella sp., Cyrtocapsella cornula, Cyrtocapsella tetrapera, Didymocyrlis mamifera, Didymocyrlis laticonus, Eucyrlidium asanoi, Eucyrlidium calverlense, Eucyrlidium cienkowskii, Eucyrlidium diaphanes, Eucyrlidium inflatum, Eucyrlidium yatsuoense, Gondwanaria sp., Lamprocyris cf. margatensis, Lithatractus tochigiensis, Lithocarpium spp., Lithopera renzae, Lychnocanama nipponica, Porodiscus sp., Rhopalodictyum spp., Spongodiscus spp., Stichocorys armata, Stichocorys delmontensis, Stylodictya sp., Theocalyptra davisiana
- Nishikawa et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.75-85 DOI
- Nakano and Tsuchiya (1992) Geology of the Chokaisan and Fukura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)
- Ozawa et al. (1988) Geology of the Yashima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 87p. (in Japanese with English abstract 5p.)
- Ozawa et al. (1979) Geology of the Asamai District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 53p. (in Japanese with English abstract 4p.)
- Ozawa et al. (1979) Geology of the Yuzawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 64p. (in Japanese with English abstract 4p.)
- Ozawa et al. (1977) Geology of the Honjo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 4p.)