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Odairakita Lava
- Stratovolcano
- West Chokai edifice and flank volcano
- Volcanic rocks
- Pleistocene
- Lithofacies: Calc-alkaline
- Lithofacies: Hypersthene hornblende olivine augite andesite
- Lithofacies: Lava
- Thickness: 10 m or thicker
- Lower limit: Unconformity (Pyroclasstic flow deposit)
- Stage IIb
- [ Upper ]
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- Odairakita Lava
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- [ Lower ]
- Stage II
- [ Upper ]
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- Stage IIc
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- Formation of West Chokai horseshoe-shaped caldera
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- Stage IIb
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- Stage IIa
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Odaira, Yuza city, Akumi county, Yamagata pref.
- Nakano and Tsuchiya (1992) Geology of the Chokaisan and Fukura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)