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Fushiogami Debris Avalanche Deposit (Yoshida et al., 1969) Sakaguchi, 1995

Invalid synonym: Fushiogami Pyroclastic Flow Deposit

• Coherent formation
• early Pleistocene
• Interfingered: upper Shimizumachi Formation

• Lithofacies: Breccia

• Source: north Adatara volcano - south Azuma volcano
• Thickness: 50 m or thicker
• Upper limit: Unconformity (Yukawa Pyroclastic Flow Deposit)
• Lower limit: Unconformity (Sasamoriyama Andesite, Matsukawa Formation, Iwakura Formation)

• Distribution: Fushiogami, Fukushima city, Fukushima pref.; Hiderita, Harase, Nihonmatsu city, Fukushima pref.

• Sakaguchi (1995) Geology of the Nihonmatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 4p.)