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Higher II Terrace Deposits Yamauchi and Murakami, 2007
Invalid synonym: Nijiyama Gravel
- Type locality: Araki elementary school, Okinoshima city, Oki county, Shimane prefecture
- Coherent formation
- Pleistocene
- Correlation: Noshira Formation
- Sedimentary facies: River terrace
- Lithofacies (Top): Clay
- Lithofacies (Upper): Gravels-bearing mud
- Lithofacies (Lower): Gravels, Sands
- Thickness (Top): Several m or thicker
- Thickness (Upper): ca. 2.5 m
- Thickness (Lower): ca. 5 - 10 m
- Lower limit: Unconformity (Ikeda Basalt, Saigo Basalt)
- Distribution: Araki elementary school - Yabigawa river - Nishida - Imazu - Shimonishi, Okinoshima city, Oki county, Shimane pref.
- Yamauchi et al. (2009) Geology of the Saigo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 118p. (in Japanese with English abstract 3p.)