[ Top ] [ Japanese ]
Odaira Lava (Hayashi, 1984) Nakano and Tsuchiya, 1992
Invalid synonym: Komadome Lava, Ushiwatari Lava
- Stratovolcano
- Volcanic rocks
- Pleistocene
- Lithofacies: Calc-alkaline
- Lithofacies: Hornblende-bearing hypersthene augite olivine andesite
- Lithofacies: Lava
- Source: Odaira crator of Chokai volcano
- Thickness: 30 - 80 m
- Lower limit: Unconformity (Fukura Lava, Minowa Lava)
- Stage II
- [ Upper ]
- ~~~~~~~~~~~~~~
- Stage IIc
- ~~~~~~~~~~~~~~
- Formation of West Chokai horseshoe-shaped caldera
- ~~~~~~~~~~~~~~
- Stage IIb
- ~~~~~~~~~~~~~~
- Stage IIa
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Odaira - Mega - Onoso, Yuza city, Akumi county, Yamagata pref.
- Hayashi and Yamamoto (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.87-95 DOI
- 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.)