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Kanegasawa Formation

• Coherent formation
• early - middle Pleistocene

• Sedimentary facies: Marine, Brackish
• Sedimentary facies: Swamp at Inner bay
• Lithofacies: Sandy siltstone
• Lithofacies (Basal): Conglomerate
• Lithofacies (Minor): Sandstone, Tuff

• Thickness: 20 - 30 m
• Lower limit: Unconformity (North Kitakami Belt)

• Distribution: Ono - Kanegasawa, Hirono city, Iwate pref.
• Fossils (Plants, Seeds): Styrax japonica, Ruppia maritima
• Fossils (Upper): Anomalodiscus sequamosus, Batillaria zonalis?, Cycladicama cumingi, Macoma incongrua, Venerupis japonica

• Yoshida et al. (1987) Geology of the Rikuchu-Ono District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 70p. (in Japanese with English abstract 6p.)