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Tsunozu Formation Mizuno et al., 1994
Invalid synonym: Mizukami Formation
- Type locality: Tsunozu, Gotsu city, Shimane prefecture
- Coherent formation
- Pliocene - middle Pleistocene
- Interfingered: Kanmurigawa Lava
- Sedimentary facies: Marine, Brackish
- Sedimentary facies: Lagoon under the influence of rivers, Shoreface, Shallow lakes, Sand bars, Sand dunes
- Lithofacies: Gravels, Sands, Clay
- Sedimentary structures: Bioturbation, Parallel stratification, Cross stratification, Ripple cross-stratification, Pipe rocks
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Tsunozu - Asari, Gotsu city, Shimane pref.; Yunotsu - Yusato - Hane town - Shizuma town, Oda city, Shimane pref.; Hamada city, Shimane pref.
- Fossils: Stegodon cf. elephantoides, Echinoids, Sponges (Spicules), Diatoms, Trace fossils (Teredo sp.)
- Fossils (Shellfishes): Anadara sp., Cristaria sp., Hyriopsis sp., Macoma sp., Sinanodonta sp., Unio sp.
- Fossils (Plants): Alnus sp., Cryptomeria sp., Fagus sp., Juglans cinerea var. megacinerea, Liquidambar sp., Melliodendron sp., Metasequoia sp., Picea koribai, Pinus thunbergii, Pseudolarix sp., Styrax shiraianus, Trapa sp., Triadica sp.
- Tephra: Oe Ash Flow Deposits, Kakida Ash Flow Deposits, Kawakami Block-and-Ash Flow Deposits, Kojidani Volcanic Products
- Takahashi et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.9, pp.474-492 DOI
- Kano et al. (2001) Geology of the Yunotsu and Gotsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 129p. (in Japanese with English abstract 5p.)
- 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.)