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Azenotani Mudstone Member
- Type locality: Azenotani, Sennan city, Osaka prefecture
- Coherent formation
- Izumi sedimentary basin
- Forearc basin associated with strike-slip fault related to Median Tectonic Line
- Late Cretaceous Maastrichtian (Macrofossils)
- Transitional: Takihata Alternation Member
- Interfingered: Kada Formation
- Sedimentary facies: Marine
- Sedimentary facies: Continental shelf
- Sedimentary facies: Turbidite
- Sedimentary facies: Channel overflow deposit
- Lithofacies: Sandy siltstone, Mudstone, Sandstone
- Lithofacies (Top): Interbedded sandstone and mudstone
- Sedimentary structures: Graded bedding, Parallel stratification, Cross stratification
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Azenotani - Mount Takakurayama - Bessho, Sennan city, Osaka pref.; Tottori, Izumi - Hata shirine, Hannan city, Osaka pref.; Ushitaki town, Kaizuka city, Osaka pref.; Lake Takinoike - Lake Shinike, Izumisano city, Osaka pref.
- Fossils: Brunonia problematicus, Eutrephoceras sp., Gyrodes sp., Hexanchus aff. microdon, Linuparus sp., Niponaster sp., Odontaspis? sp., Plicatolamna sp., Pristiophorus sp., Pseudamaura sp., Pyropsis sp., Scapanorhynchus texanus
- Fossils (Ammonoids): Baculites regina, Canadoceras tanii, Diplomoceras cf. notabile, Exiteloceras? sp., Gaudryceras izumiense, Hoploscaphites? sp., Hypophylloceras (Neophylloceras) cf. hetonaiense, Nostoceras aff. hernense, Pachydiscus (Neodesmoceras) cf. gracilis, Pachydiscus (Pachydiscus) aff. flexuosus, Pachydiscus (Pachydiscus) kobayashii, Pseudophyllites? sp., Pseudoxyblaceras (Parasolenoceras) sp., Solenoceras (Oxybeloceras) aff. crassum, Solenoceras (Solenoceras) aff. reesidei
- Fossils (Shellfishes): Acila (Truncacila) hokkaidoensis, Apiotrigonia minor nankai, Clisocolus japonicus, Eriphyla japonica, Inoceramus cf. orientalis nagaoi, Izumia trapezoidalis, Jupiteria (Ezonuculana) mactraeformis, Leionucula azenotanensis, Leptosolen japonicus, Micronectes bellaturus, Nanonavis sachalinensis brevis, Nucula izumoensis, Ostrea sp., Periplomya grandis, Periplomya nagaoi, Pleurogrammatodon splendens, Portlandia furcata, Portlandia izumensis, Tenea japonica, Yaadia obsoleta, Yaadia tanii,
- Seike et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.12, pp.759-775 DOI
- Miyata et al. (1993) Geology of the Wakayama and Ozaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 68p. (in Japanese with English abstract 4p.)
- Itihara et al. (1986) Geology of the Kishiwada District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 148p. (in Japanese with English abstract 7p.)