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Tsunozu Formation Sanin Quaternary Research Group, 1969

Invalid synonym: Tsunozu Group, Shimanohoshi Formation, Oya Group, Oe Group

• Type locality: Tsunozu, Gotsu city, Shimane prefecture
• Coherent formation
• Pliocene - middle Pleistocene

• Sedimentary facies: Marine, Freshwater
• Sedimentary facies: Sand dune or Seashore
• Lithofacies: Sands, Gravels, Mud

• Lower limit: Unconformity (Togane Formation, Omori Formation)

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

• Distribution: Tsunozu, Gotsu city, Shimane pref.; Yunotsu - Hane town - Shizuma town, Oda city, Shimane pref.; Hamada city, Shimane pref.

• Takahashi et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.9, pp.474-492 DOI
• Kano et al. (1998) Geology of the Iwami-Oda and Oura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 118p. (in Japanese with English abstract 5p.)