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Higher I Terrace Deposit

• Coherent formation
• middle Pleistocene
• Younger than Yurihara Debris Avalanche Deposit.

• Lithofacies: Gravels

• Thickness: 10 - 15 m

• Distribution: Koyoshi river, Tsuchikura - Shimokawauchi, Yurihonjo city, Akita pref.

• Ozawa et al. (1988) Geology of the Yashima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 87p. (in Japanese with English abstract 5p.)