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Ak6 Tephra Hasegawa and Nakagawa, 2007
Abbr.: Ak6
- Type locality: Kuchoro river, Tsurui city, Akan county, Hokkaido
- Tephra
- Pleistocene
- Sedimentary facies: Terrestrial
- Lithofacies: Pumice fall deposit, Pyroclastic flow deposit
- Ak6
- [ Upper ]
- ~~~~~~~~~~~~~~
- Ak6-a
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- Ak6-b
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- Ak6-c
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- Ak6-d
- ~~~~~~~~~~~~~~
- [ Lower ]
- Akan pyroclastic deposit (Akan volcano)
- [ Upper ]
- ~~~~~~~~~~~~~~
- Ak1
- ~~~~~~~~~~~~~~
- Ak2
- ~~~~~~~~~~~~~~
- Ak3
- ~~~~~~~~~~~~~~
- Ak4
- ~~~~~~~~~~~~~~
- Ak5
- ~~~~~~~~~~~~~~
- Ak6
- ~~~~~~~~~~~~~~
- Ak7
- ~~~~~~~~~~~~~~
- Ak8
- ~~~~~~~~~~~~~~
- Ak9
- ~~~~~~~~~~~~~~
- Ak10
- ~~~~~~~~~~~~~~
- Ak11
- ~~~~~~~~~~~~~~
- Ak12
- ~~~~~~~~~~~~~~
- Ak13
- ~~~~~~~~~~~~~~
- Ak14
- ~~~~~~~~~~~~~~
- Ak15
- ~~~~~~~~~~~~~~
- Ak16
- ~~~~~~~~~~~~~~
- Ak17
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kuchoro river - Aishinai 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