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Matsuzakatoge Formation (Ministry of International Trade and Industry, 1968) Yamamoto and Komazawa, 2004
- Type locality: Fuzawa river, Fuzawa, Tadami city, Minamiaizu county, Fukushima prefecture
- Coherent formation
- late Miocene (10 - 9 Ma)
- Correlation (Upper): Shiotsubo Formation
- Sedimentary facies: Shallow marine
- Sedimentary facies (Lower): Submarine phreatomagmatic eruption, Reworked sediments
- Lithofacies (Upper): Conglomerate, Sandstone
- Lithofacies (Lower): Basalt lapilli tuff, Volcanic conglomerate, Tuff breccia, Volcanic sandstone
- Lithofacies (Lower, Minor): Sandstone, Rhyolite pumice lapilli tuff
- Sedimentary structures (Upper): Graded bedding, Reversed graded bedding, Low angle cross stratification, Trough cross-stratification, Bioturbation
- Sedimentary structures (Lower): Graded bedding, Reversed graded bedding, Planar cross-stratification, Low angle cross stratification
- Sedimentary structures (Lower, Minor): Parallel stratification, Hummocky cross-stratification, Bioturbation
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Fuzawa, Tadami city, Minamiaizu county, Fukushima pref.
- Fossils: Fishes (Scales), Bernacles (Cirripedia)
- Fossils (Shellfishes): Anadara tazawaensis, Lucinoma sp., Macoma sp., Megangulus protovenulosa, Mercenaria chitaniana, Mizuhopecten palaplabejus, Naticidae gen. et sp., indet, Serripes sp., Spisula voyi, Yoldia (Cnesterium) notabilis
- 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.)