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Mizukami Formation

• Coherent formation
• Pliocene - middle Pleistocene

• Sedimentary facies: Alluvial fan deposits
• Lithofacies: Sands, Gravels
• Lithofacies (Minor): Clay, Peat
• Sedimentary structures: Cross stratification

• Thickness: ca. 10 - 16 m
• Upper limit: Interfingered (Oe-Takayama Volcanic Products)
• Lower limit: Unconformity

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

• Distribution: Komatsuji - Taheidani? - Nakanotani - Kogaitani, Misato city, Ochi county, Shimane pref.; Teratani, Kakeya town, Unnan city, Shimane pref.; Yunotsu town, Oda city, Shimane pref.
• Fossils (Pollen): Abies sp., Acer sp., Alnus sp., Aphananthe sp., Araliaceae, Artemisia sp., Buxus sp., Calystegia sp., Carduoideae, Carpinus sp., Castanea sp., Castanopsis sp., Celtis sp., Cichorioideae, Corylus sp., Cyclobalanopsis sp., Cyperaceae, Elaeagnus sp., Ericaceae, Fagus sp., Fraxinus sp., Gramineae, Ilex sp., Juglans sp., Lepidobalanus sp., Liqustrum sp., Liquidambar sp., Matasequoia sp., Nudwigia sp., Perisicaria sp., Picea sp., Pinus sp., Pterocarya sp., Salix sp., Sciadopitys sp., Sequoia sp., Styrax sp., Symplocos sp., Taxodiaceae, Tilia sp., Tsuga sieboldii, Ulmus sp., Viburnum sp., Zelkova sp.

• Hattori et al. (1983) Geology of the Sambesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 168p. (in Japanese with English abstract 7p.)