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Lower Terrace Deposits

• Coherent formation
• Pleistocene
• Correlation: Okudani Formation

• Sedimentary facies: Fluvial
• Lithofacies (Upper): Mud
• Lithofacies (Lower): Gravels

• Thickness (Upper): ca. 4 m
• Thickness (Lower: 3 - 4 m

• Distribution: Rokuonji town, Izumo city, Shimane pref.; Higashiokudani town - Iinashigawa river - Ishihara, Matsue city, Shimane pref.
• Fossils (Plants): Abies firma, Cryptomeria japonica, Fagus sp., Pseudotsuga japonica, Tsuga sieboldii

• Kano et al. (1994) Geology of the Matsue District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 126p. (in Japanese with English abstract 5p.)
• Kano et al. (1991) Geology of the Imaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 5p.)