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Kentoyama Formation Araki, 1953

• Type locality: Mount Kentoyama, Tsu city, Mie prefecture
• Coherent formation
• Pleistocene
• Correlation: uppermost part of Osaka Group, Omitsu Gravel Bed

• Sedimentary facies: Fluvial, Lacustrine
• Sedimentary facies: Lakes near the coast?
• Lithofacies: Gravels
• Lithofacies (Minor): Sands, Silt
• Sedimentary structures: Parallel stratification, Channel structure

• Thickness: 12 - 20 m
• Lower limit: Angular unconformity (Kameyama Formation)

• Distribution: Mount Kentoyama - Hisaiaikawa town - Takatsuka hills, Tsu city, Mie pref.
• Fossils (Plants): Acanthopanax sp., Berchemia racemosa, Ceratophyllum demersum, Chaenomeris sp., Ehretia thyrisiflora, Fagus microcarpa, Hamamelis parrotioides, Juglans mandeshurica var. sieboldiana, Magnolia ovobata, Meliosma rigida, Paliurus nipponicus, Parabenzoin praecox, Phragmites sp., Potamogeton cristatus, Quercus cf. gilva, Sabia sp., Sapium sebiferum, Scirpus sp., Styrax japonica, Trapa macropoda, Trapa mammillifera, Trapa maximowiczii, Wistaria sp.
• Fossils (Pollen): Abies sp., Carpinus sp., Corylus sp., Elaeagnus sp., Fagus sp., Ilex sp., Juglans sp., Liquidambar sp., Persicaria sp., Pinus sp., Pterocarya sp., Quercus sp., Sapium sp., Trapa sp., Tsuga sp., Ulmus sp., Zelkova sp.

• Yoshida et al. (1995) Geology of the Tsu-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)
• Yoshida (1987) Geology of the Tsu-Tobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 72p. (in Japanese with English abstract 5p.)