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Harakawa Formation Morimoto et al., 1953
- Type locality: Tajiri - Tajiritoge pass, Kashiba city, Nara prefecture
- Coherent formation
- Miocene (14.8, 13.0 Ma, K-Ar)
- Lithofacies: Sandstone, Conglomerate, Siltstone, Andesitic lava (high-Mg), Olivine orthopyroxene clinopyroxene andesite lava, Olivine clinopyroxene basalt lava
- Harakawa Formation
- [ Upper ]
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- Tojo Member / Shibayama Member / Fujii Member / Karindobata Member
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- Older Dorokoro Member / Younger Dorokoro Member
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- Odake Member / Myojinyama Member / Kasugayama Member / Kashiwamine Member / Ishimakuri Member
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- Tajiri Member / Myojin Member / Tomeshoyama Member / Higashiyama Member
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Tajiri - Tajiritoge pass - Anamushi, Kashiba city, Nara pref.; Mount Odake - Mount Karasudake, Mount Nijosan, Katsuragi city, Nara pref.; Mount Myojinyama - Fujii, Oji city, Kitakatsuragi county, Nara pref.; Habikino city, Osaka pref.; Taishigaoka - Ishimakuri - Mount Kashiwamine, Taishi city, Minamikawachi county, Osaka pref.; Kokubu - Shibayama - Tanabe - Mount Dorokoroyama, Kashiwara city, Osaka pref.
- Fossils: Plants, Diatoms (Freshwater)
- Sato et al. (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.53-69 DOI
- Shinjoe et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.7, pp.310-325 DOI
- Miyachi et al. (1998) Geology of the Osaka-Tonambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 113p. (in Japanese with English abstract 5p.)