[ Top ] [ Japanese ]
Kojingatake Lava (Hayashi, 1984) Nakano and Tsuchiya, 1992
Invalid synonym: Kojingatake Dome Lava, Shishigahana Lava
- Stratovolcano
- Volcanic rocks
- East Chokai horseshoe-shaped caldera floor fill deposit
- Holocene
- Lithofacies: Olivine hypersthene augite andesite
- Lithofacies (Minor): Hypersthene augite andesite
- Lithofacies: Lava
- Source: Mount Shinzan
- Eruptive volume: 0.79 km3
- Thickness: 200 m
- Upper limit: Unconformity (Shinzan Lava)
- Stage IIIb
- [ Upper ]
- +__+__+__+__+_
- AD 1974 Phreatic explosion
- ~~~~~~~~~~~~~~
- AD 1834 eruption
- ~~~~~~~~~~~~~~
- Shizan Lava
- ~~~~~~~~~~~~~~
- AD 1740 eruption
- ~~~~~~~~~~~~~~
- AD 1659 eruption
- ~~~~~~~~~~~~~~
- AD 871 eruption
- ~~~~~~~~~~~~~~
- Kojingatake Lava
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: East Chokai caldera, Yamagata pref. - Akita pref.; Shishigahana, Nikaho city, Akita 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.)