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Tachikawa 2 Formation (Kaizuka et al., 1977) Ueki and Sakai, 2007

Invalid synonym: Tachikawa 2 Terrace Deposit, Musashino Formation

• Type locality: Fuchu cliff, Fuchu city, Tokyo
• Coherent formation
• late Pleistocene (30 - 20 ka)
• Correlation: Tachikawa Gravel Bed

• Sedimentary facies: Fluvial
• Sedimentary facies: Strath terrace
• Sedimentary facies (Minor): Fill terrace
• Lithofacies: Gravels
• Lithofacies (Minor): Sands, Silt
• Sedimentary structures: Channel structure
• Paleocurrent: to Southeast

• Thickness: 1.5 - 30 m
• Upper limit: Unconformity (Tachikawa Loam, Akiruppara Formation, Toshitorazu Formation, Aoyagi Formation)
• Upper: Unconformity (Ome Formation, Kuromegawa Formation, Chichibu Belt, Kobotoke Group, Kazusa Group, Musashino Terrace Deposit)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: MIdori town, Fuchu city, Tokyo; Higashiome, Ome city, Yokozawa - Ninomiya, Akiruno city, Tokyo; Akikawa river, Ajiro, Akiruno city, Tokyo; Shimosato - Kuromegawa river, Higashikurume city, Tokyo; Okuno ochiai - Hirai shiota, Hinode city, Tokyo; Hirai river, Ashigeta, Hinode city, Tokyo; Irumagawa river, Saitama pref.; Kitaasakawa, Shimoongata, Hachioji city, Tokyo; Kawaguchi river, Kawaguchi town, Hachioji city, Tokyo; Asakawa river - Minamiasakawa river, Yudonogawa river - Misawagawa river - Okurigawa river - Kottagawa river, Tokyo; Sakaigawa river - Tsurumigawa river, Tokyo - Kanagawa pref.
• Fossils: Pollen

• 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.)