[ Top ] [ Japanese ]
Old-Tamagawa Welded Tuff Sudo, 1992
- Volcanic rocks
- Pleistocene (2.7 - 1.4 Ma, K-Ar)
- Source: Old-Tamagawa caldera. Mount Kurasawa, Akita pref.
- Upper limit: Unconformity (Tamagawa Welded Tuff)
- Old-Tamagawa Welded Tuff
- [ Upper ]
- ~~~~~~~~~~~~~~
- Rhyolite Welded Tuff 3
- ~~~~~~~~~~~~~~
- Rhyolite Welded Tuff 2
- ~~~~~~~~~~~~~~
- Rhyolite Welded Tuff 1
- ~~~~~~~~~~~~~~
- Rhyolite Welded Tuff A
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Iwate pref.
- Nakaya et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.7, pp.457-473 DOI
- Suto and Ishii (1987) Geology of the Shizukuishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 142p. (in Japanese with English abstract 5p.)