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Toyooka Formation (Fukuda and Takano, 1951) Ueki and Sakai, 2007

Invalid synonym: Kanekozaka Formation

• Type locality: Kanekozaka, Araku, Iruma city, Saitama prefecture
• Coherent formation
• Higher Terrace Deposit
• early Pleistocene (ca. 0.8 Ma)

• Sedimentary facies: Marine
• Lithofacies: Gravels
• Sedimentary structures: Channel structure, Imbricate structure
• Paleocurrent: to East

• Thickness: ca. 10 m
• Upper limit: Unconformity (Tama I Loam)
• Lower limit: Unconformity (Bushi Formation)

• Distribution: Kanekozaka - Irumadai - Uekoyata, Araku, Iruma city, Saitama pref.

• Ueki and Sakai (2007) Geology of the Ome District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 189p. (in Japanese with English abstract 5p.)