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Shiotsubo Formation (Suzuki, 1951)
Invalid synonym: Ikenohara Coarse Sandstone Member
- Type locality: Agano river, Shiotsubo, Takasato town, Kitakata city, Fukushima prefecture
- Coherent formation
- late Miocene (10 - 9 Ma)
- Contemporaneous heterotopic facies: lower Fujitoge Formation
- Correlation: upper Matsuzakatoge Formation
- Sedimentary facies: Shallow marine
- Sedimentary facies: Marine regression deposit
- Sedimentary facies: Delta deposit
- Sedimentary facies: Prodelta slope deposit, Prodelta gravity flow deposit, Delta front deposit
- Lithofacies: Conglomerate, Sandstone, Siltstone
- Sedimentary structures: Graded bedding, Reversed graded bedding, Low angle cross-stratification, Ripple cross-stratification, Trough cross-stratification, Planar cross-stratification, Herringbone cross-stratification
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Agano river, Shiotsubo, Takasato town, Kitakata city, Fukushima pref.; Funehiki town, Tamura city, Fukushima pref.; Futamatagawa, Tenei city, Iwase county, Fukushima pref.; Matsuzawa, Aizumisato city, Onuma county, Fukushima pref.
- Fossils: Shellfishes
- Furukawa et al. (2018) Geology of the Azuma Yama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 74p. (in Japanese with English abstract 3p.)
- Yamamoto et al. (2006) Geology of the Kitakata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 63p. (in Japanese with English abstract 5p.)
- Yamamoto and Komazawa (2004) Geology of the Miyashita District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 71p. (in Japanese with English abstract 5p.)
- Yamamoto and Yoshioka (1992) Geology of the Wakamatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 73p. (in Japanese with English abstract 5p.)