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Yamashita Formation Takizawa et al., 1984

• Type locality: 1 chome, Yamashita town, Ishinomaki city, Miyagi prefecture
• Coherent formation
• Pliocene
• Correlation: Omotezawa Formation

• Sedimentary facies: Terrestrial, Shallow marine
• Lithofacies: Interbedded siltstone and sandstone
• Lithofacies (Minor): Gravel-bearing sandstone, Pumice tuff
• Sedimentary structures: Parallel stratification, Cross stratification

• Thickness: ca. 10 - 150 m
• Lower limit: Conformity (Kuboma Formation), Unconformity (Kakeyama Conglomerate Member, Wariyama Granite, Karosan Formation)

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

• Distribution: 1 chome, Yamashita town, Ishinomaki city, Miyagi pref.; Sakamoto river, Yamamoto city, Watari county, Miyagi pref.; Mitaki river, Shinchi city, Soma county, Fukushima pref.
• Fossils: Echinoids (Linthia nipponica), Wood fragments
• Fossils (Shellfishes): Acila sp., Cardium (Cerastoderma) cf. iwasiroensis, Corbicula sp., Crepidula sp., Lucina acutilineata, Macoma tokyoensis, Mya arenaria, Serripes laperousii
• Fossils (Pollen): Abies sp., Aesculus sp., Alnus sp., Artemisia sp., Carpinus sp., Celtis-Aphananthe, Corylus sp., Cyclobalanopis sp., Elaeagnus sp., Fagus sp., Ilex sp., Juglans sp., Lepidobalanus sp., Liquidamber sp., cf. Macleaya sp., Metasequoia sp., Persicaria sp., Picea sp., Pinus sp., Polygonum sp., cf. Pseudolarix sp., Pteris sp., Pterocarya sp., Sapium sp., Symplocos sp., Tsuga sp., Ulmus- Zelkova

• Fujita et al. (1988) Geology of the Kakuda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 99p. (in Japanese with English abstract 9p.)
• Takizawa et al. (1984) Geology of the Ishinomaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 7p.)