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Ouchi Formation (Kanno, 1955) Yanagisawa et al., 1996
Probably same as Upper Member of Kaneyama Formation.
- Type locality: Ouchi coal mine, Sano, Marumori city, Igu county, Miyagi prefecture
- Coherent formation
- middle Miocene (14.8 Ma, FT)
- Sedimentary facies: Terrestrial
- Sedimentary facies (Top): Lacustrine
- Sedimentary facies (Lower): Fluvial
- Sedimentary facies (Lower): Hyperconcentrated flood flow deposit, Channel-fill deposit
- Sedimentary facies (Lower, Minor): Pyroclastic flow deposit
- Lithofacies (Top): Mudstone
- Lithofacies (Upper): Mudstone, Sandstone
- Lithofacies (Upper, Minor): Lignite
- Lithofacies (Lower): Conglomerate, Sandstone
- Lithofacies (Lower, Minor): Rhyolitic tuff
- Sedimentary structures (Upper): Paralle stratification, Wave ripples, Graded bedding
- Sedimentary structures (Lower): Trough cross-stratificaiton
- Paleocurrent (Lower): Northeast
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Ouchi coal mine, Sano, Marumori city, Igu county, Miyagi pref.
- Fossils (Daijima flora): Actinodaphne nipponica, Alangium aequalifolium, Camellia protojaponica, Carpinus shimizu, Carpinus subcordata, Carpinus subyedoensis, Carya miocathayensis, Castanea miomollissima, Celtis cfr. miobungeana, Cinnamomum oguniense, Comptonia naumanni, Diospyros miokaki, Lindera gaudini, Liquidambar miosinica, Machilus ugoana, Neolitsea japonica, Parabenzoin protopraecox, Parrotia fagifolia, Pterocarya asymmetrosa, Quercus mandraliscae, Quercus nathorsti, Quercus sinomiocenicum, Quercus subvariabilis, Rosa usyuensis, Sapindus kaneharai, Ulmus cfr. longifolia, Zelkova ungeri
- Yanagisawa et al. (1996) Geology of the Somanakamura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 9p.)