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Tama Loam Kanto Loam Research Group, 1956

Invalid synonym: Yasudate Loam, Tama Clay Formation, Tokorozawa Clay Formation, Minamiyahagi Clay Formation, Yakebe Pumice, Inarizawa Loam

• Type locality: Masugata, Tama ward, Kawasaki city, Kanagawa prefecture
• Loam
• Pleistocene
• Correlation: Sayama Loam
• Correlation (Upper): Lower Tephra
• Correlation (Lower): Zensanji Tephra

• Lithofacies: dark brown Loam
• Sedimentary structures: Cracks

• Source: Yatsugatake volcano
• Thickness: 15 - 30 m or thicker
• Upper limit: Conformity (Shimosueyoshi Loam)
• Lower limit: Conformity (Higher Terrace Deposit), Unconformity (Imokubo Formation, Mine Formation, Toyooka Formation)

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

• Distribution: Masugata, Tama ward, Kawasaki city, Kanagawa pref.; Mitsuidai - Ishikawa town, Hachioji city, Tokyo; Suwa town - Kohan - Megurita, Higashiyamato city, Tokyo; Miyadera, Iruma city, Saitama pref.; Yamaguchi - Kamiyamaguchi - Arahata - Hongo, Tokorozawa city, Tokyo; Yasudate, Chichibu city, Saitama pref.; Kamikayama, Hidaka city, Saitama pref.
• Tephra: KMT, HBP

• Ueki et al. (2013) Geology of the Hachioji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 137p. (in Japanese with English abstract 6p.)
• 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.)
• Makimoto and Takeuchi (1992) Geology of the Yorii District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)