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Akandana Pyroclastic Rocks (Harayama, 1990)
- Type locality: 1,420 - 1,500 m above sea level, route 158, Hirayu, Okuhidaonsengo, Takayama city, Gifu prefecture
- Volcanic rocks
- Pleistocene?
- Correlation: 1909m Lava
- Lithofacies: Pyroclastic flow deposit
- Lithofacies: Augite biotite hornblende hypersthene andesite - dacite tuff breccia, Lapilli tuff
- Lithofacies (Minor): Volcanic ash, Lapilli
- Sedimentary structures (Minor): Graded bedding
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Hirayu - western flank of Mount Akandanayama, Okuhidaonsengo, Takayama city, Gifu pref.
- Oikawa et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.49-61 DOI
- Harayama (1990) Geology of the Kamikochi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 175p. (in Japanese with English abstract 11p.)