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Sarubetsu Tuff Member
- Coherent formation
- Pleistocene (2.8 Ma, FT)
- Thickness: 10 - 20 m
- Upper limit: Conformity (Upper Lignite-bearing Member)
- Lower limit: Conformity (Lower Lignite-bearing Member)
- Lower
- [ Upper ]
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- Upper Lignite-bearing Member
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- Sarubetsu Tuff Member
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- Lower Lignite-bearing Member
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- Inashibetsu Tuff Member
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: east of Makubetsu terrace, Tokachi plain, Hokkaido
- Tephra: Sarubetsu Tuff (2.8 Ma, FT)
- Takashimizu and Oka (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.65-79 DOI