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Shirayukigawa Debris Avalanche Deposits

• Stratovolcano
• Coherent formation
• Pleistocene
• Older than Higher IV Terrace Deposit, and younger than Higher V Terrace Deposit.

• Lithofacies (Blocks): Andesite

• Thickness: 10 - 30 m
• Lower limit: Unconformity (Sasaoka Formation)

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

• Distribution: Shirayuki river, Nikaho 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.)