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Todera Formation Suzuki et al., 1972
- Type locality: Todera, Aizubange city, Kawanuma county, Fukushima prefecture
- Coherent formation
- Flood plain deposit at the flank of Sunagohara caldera
- middle Pleistocene (0.3 - 0.22 Ma; 0.29 Ma, FT)
- Correlation: Sunagohara Formation
- Sedimentary facies: Fluvial
- Sedimentary facies (Upper): Lahar, Gravelly river channel, Flood plain
- Sedimentary facies (Middle): Pyroclastic flow deposit
- Sedimentary facies (Lower): Gravelly river channel
- Lithofacies (Upper): Sands, Gravels
- Lithofacies (Upper, Minor): Silt
- Lithofacies (Lower): Gravels
- Sedimentary structures (Upper): Low angle cross-stratification, Sour-fill cross-stratification, Imbrication
- Sedimentary structures (Upper, Minor): Paralle stratification, Ripple stratification
- Sedimentary structures (Lower): Imbrication
- Paleocurrent (Lower): Northeast, North
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Todera, Aizubange city, Kawanuma county, Fukushima pref.
- Fossils (Plants): Abies sp., Acer diabolicum, Actinidia cf. polygama, Alnus hirsuta, Alnus japonica, Betula ermanni, Betula platyphylla var. japonica, Bidens cf. tripartita, Buxus microphylla var. japonica, Carex dickinsii, Carex vesicaria, Carpinus cordata, Ceratophyllum demersum, Chamaecyparis pisifera, Cornus brachypoda, Cornus contraversa, Corylus heterophylla var. thunbergii, Cryptomeria japonica, Eleocharis sp., Fagus microcarpa, Hippuris vulgaris, Juglans ailanthifolia, Magnolia kobus, Magnolia obovata, Menyanthes trifoliata, Phellodendron amurense, Picea jezoensis, Picea pleistoceaca, Pinus koraiensis, Potamogeton cf. oxyphyllus, Pterocarya rhoifolia, Quercus serrata, Ranunculus sp., Rubus sp., Sambucus sp., Scirpus mucronatus, Sparganium glomeratum, Styrax japonica, Trapa japonica, Trapa maximowiczii, Trapella sinensis, Tsuga diversifolia, Tsuga sieboldii, Vitis ficifolia var. lobata
- Tephra: Sn-SK
- Yamamoto et al. (2006) Geology of the Kitakata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 63p. (in Japanese with English abstract 5p.)
- Yamamoto and Yoshioka (1992) Geology of the Wakamatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 73p. (in Japanese with English abstract 5p.)