Osato Loam

Type locality: Osato, Kumagaya city, Saitama prefecture
Loam
Pleistocene (younger than 20 ka, ¹⁴C)
Correlation: Tachikawa Loam

Lithofacies: Loam

Source: Asama volcano
Lower limit: Unconformity (Middle II Terrace Deposit, Younger Loam, Lower I Terrace Deposit, Lower Terrace Deposit)
Lower limit: Top of AT

Kanto Loam (Saitama pref.)
[ Upper ]
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Osato Loam = Tachikawa Loam
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Younger Loam = Musashino Loam, Tachikawa Loam
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Hitsujiyama Loam = Shimosueyoshi Loam
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Sayama Loam = Tama Loam
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[ Lower ]

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

Distribution: Osato, Kumagaya city, Saitama pref.; Ishigami, Ueno city, Tano county, Gunma pref.; Motofunako - Mount Nishimikabo, Kanna city, Tano county, Gunma pref.
Tephra: As-BP, As-YP

Hara et al. (2010) Geology of the Mitsumine District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 110p. (in Japanese with English abstract 4p.)
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.)
Okubo and Horiguchi (1969) Geology of the Mamba District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 65p. (in Japanese with English abstract 5p.)