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Kuzumine Formation Maruyama et al., 1951
Invalid synonym: Utsuno Formation, Nakayama Formation
- Type locality: Kuzumine, Moji, Kurikoma, Kurihara city, Miyagi prefecture
- Coherent formation
- middle Miocene (11.6 Ma, K-Ar; Diatoms)
- Lithofacies: Low alkaline calc-alkaline
- Lithofacies: Andesite lava, Pyroclastic rocks (Haloclastite), Conglomerate, Tuffaceous sandstone, Siltstone
- Iwagasawaki, Miyagi pref.
- [ Upper ]
- ~~~~~~~~~~~~~~
- Kuzumine Formation
- ~~~~~~~~~~~~~~
- Horokura Formation
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Moji, Kurikoma, Kurihara city, Miyagi pref.; Hosokura, Uguisuzawa, Kurihara city, Miyagi pref.; Lake Hanayama, Hanayama, Kurihara city, Miyagi pref.; Kawatabi, Narukoonsen, Osaki city, Miyagi pref.; Toriyazan - Chijimi creek, Iwadeyama, Osaki city, Miyagi pref.
- Fossils: Sponges (Aphrocallistes sp.)
- Fossils (Shellfishes): Chlamys arakawai, Chlamys kaneharai, Chlamys miyatokoensis, Fulgoraria striata, Mizuhopecten paraplebejus
- Fossils (Diatoms): Denticulopsis nicobarica, Denticulopsis praedimorpha
- Tsuchiya et al. (1997) Geology of the Iwagasaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 96p. (in Japanese with English abstract 4p.)