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Hatakenaka Formation (Kubota, 1977) Ueki and Sakai, 2007

• Type locality: Nagabuchi, Ome city, Tokyo
• Coherent formation
• Holocene (7.8 - 5 ka)

• Sedimentary facies: Fluvial
• Lithofacies: Sands, Gravels
• Sedimentary structures: Imbricate structure
• Paleocurrent: to East

• Thickness: 2 - 4 m
• Lower limit: Unconformity (Chichibu Belt, Yamada Formation)

• Distribution: Nagabuchi - MItake - Amagase town - Komaki town, Ome city, Tokyo; Hanehigashi - Hanenishi, Hamura city, Tokyo; Fussa, Fussa city, Tokyo; Yamada, Akiruno city, Tokyo; Shukudori, Miyoshino, Hinode city, Nishitama county, Tokyo

• 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.)