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Otani Tephra Makinouchi, 1975
- Type locality: Otani, Tokoname city, Aichi prefecture
- Tephra
- Pleistocene (5.24 Ma, FT)
- Correlation: Ohta Tephra, Togo Tephra
- Lithofacies (Upper): Volcanic ash
- Lithofacies (Lower): Volcanic ash (2 units)
- Sedimentary structures (Lower, Minor): Parallel stratification, Convolute lamination
- Distribution: Otani - Chiyogaoka, Tokoname city, Aichi pref.; Higashiura city, Chita county, Aichi pref.
- Fossils (Plants): Acer sp., Alangium aequalifolium, Ampetopsis brevipedunculata, Aphananthe aspera, Berchemia racemosa, Brasenia purpurea, Brasenia schreberi, Buxus japonica, Camellia japonica, Carex sp., Castanopsis cuspidata, Cinnamomum camphora, Cladrastis cf. platycarpa, Cladrastis cf. shikokiana, Cleyera ochnacea, Cunninghamia sp., Fortinearia sp., Glyptostrobus pensilis, Illicium anisatum, Lindera miyataensis, Liquidambar protopalmata, Mallotus japonicus, Metasequoia disticha, Myrica rubra, Nuphar akashiensis, Nuphar japoincum, Paliurus protonipponicus, Pleioblastus sp., Podocarypus macrophylla, Pseudolarix kaempferi, Quercus protoaliena, Quercus protoserrata, Quercus sinomiocenicum, Quercus stenophylla, Sabia japonica, Salix cf. subfragiis, Sciadopitys verticillata, Sequoia sempervirens Symplocos glauca, Symplocos prunifolia, Trapa anteformata, Trapa incisa, Trapa mammillifera, Trapella aniennifera, Vitis cf. thunbergii, Wisteria fallax, Zelkova ungeri
- Yoshida and Ozaki (1986) Geology of the Handa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 98p. (in Japanese with English abstract 4p.)