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Saijo Formation (Hashimoto and Kusumi, 1958) Higashimoto et al., 1985

• Type locality: Saijo, Higashihiroshima city, Hiroshima prefecture
• Coherent formation
• Pleistocene (ca. 0.7 - 0.5 Ma, FT)

• Sedimentary facies: Fluvial
• Sedimentary facies (North): Braided river
• Sedimentary facies (North, Minor): Alluvial fan
• Sedimentary facies (Middle, South): Meandering river
• Climate: Cold - Cool
• Lithofacies: Sands, Gravels
• Lithofacies (Minor): Silt, Lignite
• Paleocurrent: from Northeast to Southwest

• Thickness: ca. 10 - 50 m
• Upper limit: Unconformity (Upper Terrace Deposits)
• Lower limit: Abut unconformity (Granite)

• Fossils (Plants): Abies sp., Actinidia cf. arguta, Alisma canalicuiatum, Alnus (Alnaster) sp., Alnus japonica, Aneilema keisak, Betula cf. maximowicziana, Blyxa sp., Boehmeria sp., Callicarpa sp., Carex cf. dickinsii, Carex (Graciles) sp., Carex (Vignea) sp., Caryophyllaceae, Chamaecyparis obtusa, Chamaecyparis pisifera, Cornus controversa, Cunninghamia sp., Cryptomeria sp., Cyperus sp., Fagus aff. hayatae, Haloragis sp., Hamamelidaceae, Hypericum sp., Ilex sp., Iris sp., Isoets japonica, Juglans sp., Juncus sp., Labiatae, Lycopus sp., Magnolia sp., Melliodendron sp., Menyanthes trifoliata, Mosia sp., Najas cf. marina, Nuphar sp., Nymphaea sp., Oxalis sp., Phellodendron amurense, Picea jezoensis, Picea maximowiczii, Picea cf. shirasawae, Pinus koraiensis, Polygonum thunbergii, Polygonum pubescens, Potamogeton cf. cristatus, Potamogeton cf. fryeri, Potentilla palustris, Prunus sp., Pseudotsuga japonica, Pterocarya sp., Quercus (Lepidobalanus) sp., Sambucus sieboldiana, Scirpus sp., Selaginella remotifolia, Sparganium sp., Stewartia sp., Styrax japonica, Trapa sp., Triadenum japonicum, Tsuga diversifolia, Viburnum (Odontotinus) sp., Viola sp., Vitis sp.
• Tephra (7 beds or more): Narahara, Imada, Okago, Hinokidani, Kunichika, Yasuda, Ichigahara

• Takagi and Mizuno (1999) Geology of the Kaitaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 49p. (in Japanese with English abstract 4p.)
• Higashimoto et al. (1985) Geology of the Kure District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 6p.)