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Ioridanitoge Formation Imamura, 1933
Invalid synonym: Ihoridanitoge Conglomerate Member, Ioridani Conglomerate Member, Ushioi Sandstone and Shale, Oritate-toge Conglomerate, lower Nagatogawa Formation, lower Nagatogawa Group
- Type locality: Ioridani pass, Ioridani, Toyama city, Toyama prefecture
- Coherent formation
- Sedimentary facies: Terrestrial
- Sedimentary facies: Inner to outer fan of alluvian fan, Gravelly braided river, Meadering river
- Lithofacies: Conglomerate
- Lithofacies (Minor): Sandstone, Siltstone, Tuff, Tuffaceous sandstone
- Paleocurrent: from Northwest to Southeast
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Upper reaches of Nagatogawa river - Jinichi dam - Uradani valley - Ioridani pass - Koito - Jinzugawa river - Wadagawa river - Koguchigawa river - Magawa river - Higashisakamoridani valley - Mount Kumaoyama - Kumaogawa river - Iwaitani valley - Yakushidaira - Mount Yakushidake - Yakushizawa creek - Nakayamanokkoshi - Mount Kurobegorodake, Toyama city, Toyama pref.; Kitanomatagawa river - Mizuhoradani valley - Utsubodanigawa river, Takayama city, Gifu pref.; Morimo - Mount Kitanomatadake - Nakanomatagawa river, Kamioka, Hida city, Gifu pref.
- Fossils (Plants): Equisetites sp., Onychiopsis elongata, Podozamites reinii, Xenoxylon latiporosum (Tree trunk)
- Matsukawa et al. (2014) Jour. Geol. Soc. Japan, vol.120, no.6, pp.201-217 DOI
- Matsukawa et al. (2014) Jour. Geol. Soc. Japan, vol.120, no.5, pp.147-164 DOI
- Kunugiza et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.83-101 DOI
- Hirasawa et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.103-121 DOI
- Harayama et al. (1991) Geology of the Yarigatake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 190p. (in Japanese with English abstract 8p.)
- Nozawa et al. (1981) Geology of the Shirokimine District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 10p.)
- Sakamoto and Nozawa (1960) Yatsuo, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 8p.)
- Nozawa and Sakamoto (1960) Gohyakkoku, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 68p. (in Japanese with English abstract 10p.)
- Kawai and Nozawa (1958) Higashimozumi, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 76p. (in Japanese with English abstract 10p.)