Osakada Loam

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Osakada Loam

Loam
late Pleistocene, Last Glacial Period
Correlation: upper Onozawa Gravel

Lithofacies: Loam (Silty volcanic ash soil)

Source: Ontake volcano
Thickness: 3 m
Lower limit: Unconformity (Hata Gravel Bed)

Shinshu Loam
[ Upper ]
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Hata Loam
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Osakada Loam
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Nishibayashi Loam
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Enrei Loam
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[ Lower ]

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

Distribution: Nakayama - Mount Akagiyama, Matsumoto city, Nagano pref.; Osakada, Shiojiri city, Nagano pref.
Tephra: NgP

Harayama et al. (2009) Geology of the Matsumoto District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 63p. (in Japanese with English abstract 3p.)
Katada and Isomi (1964) Shiojiri, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 52p. (in Japanese with English abstract 10p.)