[ Top ] [ Japanese ]
Ak12 Tephra Hasegawa and Nakagawa, 2007
Abbr.: Ak12
- Type locality: Kyowa, Akan town, Kushiro city, Hokkaido
- Tephra
- Pleistocene
- Sedimentary facies: Terrestrial
- Lithofacies: Pumice fall deposit, Pyroclastic flow deposit
- Ak12
- [ Upper ]
- ~~~~~~~~~~~~~~
- Ak12-a
- ~~~~~~~~~~~~~~
- Ak12-b
- ~~~~~~~~~~~~~~
- Ak12-c
- ~~~~~~~~~~~~~~
- [ Lower ]
- Akan pyroclastic deposit (Akan volcano)
- [ Upper ]
- ~~~~~~~~~~~~~~
- Ak1
- ~~~~~~~~~~~~~~
- Ak2
- ~~~~~~~~~~~~~~
- Ak3
- ~~~~~~~~~~~~~~
- Ak4
- ~~~~~~~~~~~~~~
- Ak5
- ~~~~~~~~~~~~~~
- Ak6
- ~~~~~~~~~~~~~~
- Ak7
- ~~~~~~~~~~~~~~
- Ak8
- ~~~~~~~~~~~~~~
- Ak9
- ~~~~~~~~~~~~~~
- Ak10
- ~~~~~~~~~~~~~~
- Ak11
- ~~~~~~~~~~~~~~
- Ak12
- ~~~~~~~~~~~~~~
- Ak13
- ~~~~~~~~~~~~~~
- Ak14
- ~~~~~~~~~~~~~~
- Ak15
- ~~~~~~~~~~~~~~
- Ak16
- ~~~~~~~~~~~~~~
- Ak17
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kyowa, Akan town, Kushiro city, Hokkaido; Upper reaches of Kuchoro river, Tsurui city, Akan county, Hokkaido
- Hasegawa et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.7, pp.366-381 DOI
- Hasegawa and Nakagawa (2007) Jour. Geol. Soc. Japan, vol.113, no.2, pp.53-72 DOI