[ Top ] [ Japanese ]

Saita Formation (Saito and Nakayama, 1954) Ueki and Mitusio, 1998

Invalid synonym: Saita Gravel Bed, Sugaya Gravel, Otaniike Gravel

• Type locality: Saitanaka, Saita town, Mitoyo city, Kagawa prefecture
• Coherent formation
• late Pliocene, Piaenzian - early Pleistocene, Calabrian
• Contemporaneous heterotopic facies: Koda Formation

• Sedimentary facies: Fluvial
• Lithofacies: Gravels
• Lithofacies (Minor): Sands
• Sedimentary structures: Channel structure, Trough cross-stratification

• Thickness: 70 m
• Upper limit: Interfingered (Koda Formation), Unconformity (Yakeo Formation, Takase Formation, Higher and Middle Terrace Deposits)
• Lower limit: Unconformity (Hikita Formation, Tanono Sandstone Member, Kan-onji Plutonic Rocks)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Saitanaka - Ono - Kamitakano - Hagata - Yamamoto - Kochi, Mitoyo city, Kagawa pref.; Uchinono - Fukudahara, Kanonji city, Kagawa pref.
• Fossils (Plants): Menyanthes sp., Metasequoia sp., Picea maximowiczii
• Tephra: Iruhi

• Noda et al. (2017) Geology of the Kan-onji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 96p. (in Japanese with English abstract 4p.)