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Amagase Formation (Juen, 1965) Ueki and Sakai, 2007

• Type locality: Amagase town, Ome city, Tokyo
• Coherent formation
• Holocene

• Sedimentary facies: Fluvial
• Lithofacies: Gravels

• Thickness: 1 - a few dozen m
• Lower limit: Unconformity (Chichibu Belt, Ome Formation)

• Distribution: Amagase town - Chigase town, Hatanaka - Nagabuchi - Nariki, Ome city, Tokyo; Hanenishi - Hanekami - Hamura city, Tokyo; Fussa - Honcho, Fussa city, Tokyo; Kumakawa - Haijima town, Akishima city, Tokyo; Takatsuki town - Suwa town - Kanoya town, Hachioji city, Tokyo; Masuko - Yamada - Kamiyotsugi - Shimoyotsugi - Ogawahigashi - Ninomiya - Asahi - Shikenzaki - Komiyakubo - Nishigayato, Akiruno city, Tokyo; Shiota - Ashigeta - Shukudori, Hinode city, Nishitama county, Tokyo; Azu - Ochiai, Hanno city, 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.)