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Osakada Gravel

• Type locality: Osakada, Shiojiri city, Nagano prefecture
• Coherent formation
• middle Pleistocene
• Correlation: Akagiyama Gravel, lower Onozawa Gravel

• Sedimentary facies: Fluvial
• Sedimentary facies: Alluvial fan
• Lithofacies: Gravels, Loam

• Thickness: 10 m or thicker
• Upper limit: Transitional (Nishibayashi Loam)

• Distribution: Osakada, Shiojiri city, Nagano pref.; Mount Akagiyama, Matsumoto city, Nagano pref.

• 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.)