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Fukazawa Pyroclastic Flow Deposit
Invalid synonym: Fukazawa Formation
- Tephra
- Takatama caldera forming stage pyroclastic flow
- late Miocene (9 - 8 Ma, Radiometric ages)
- Lithofacies: Rhyolitic Lapilli tuff
- Thickness: 350 m or thicker
- Takatama Formation
- [ Upper ]
- ~~~~~~~~~~~~~~
- Iwane Rhyolite = Post-caldera stage intrusive rocks
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- Shiroishi Formation = Post-caldera-stage caldera lake-fill deposit
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- Fukazawa Pyroclastic Flow Deposit = Caldera-forming stage
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Fukushima pref.
- Hasegawa et al. (2011) Jour. Geol. Soc. Japan, vol.117, Supplement, pp.33-48 DOI
- Sakaguchi (1995) Geology of the Nihonmatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 4p.)