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Ak3 Tephra Hasegawa and Nakagawa, 2007
Abbr.: Ak3
- Type locality: Mosetsuri, Tsurui city, Akan county, Hokkaido
- Tephra
- Pleistocene (0.57 Ma, K-Ar)
- Sedimentary facies: Terrestrial
- Lithofacies (Upper): Pyroclastic flow deposit
- Lithofacies (Lower): Pumice fall deposit
- Akan pyroclastic deposit (Akan volcano)
- [ Upper ]
- ~~~~~~~~~~~~~~
- Ak1
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- Ak2
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- Ak3
- ~~~~~~~~~~~~~~
- Ak4
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- Ak5
- ~~~~~~~~~~~~~~
- Ak6
- ~~~~~~~~~~~~~~
- Ak7
- ~~~~~~~~~~~~~~
- Ak8
- ~~~~~~~~~~~~~~
- Ak9
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- Ak10
- ~~~~~~~~~~~~~~
- Ak11
- ~~~~~~~~~~~~~~
- Ak12
- ~~~~~~~~~~~~~~
- Ak13
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- Ak14
- ~~~~~~~~~~~~~~
- Ak15
- ~~~~~~~~~~~~~~
- Ak16
- ~~~~~~~~~~~~~~
- Ak17
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Mosetsuri - 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