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Middle I Terrace Deposits

Invalid synonym: Yumachi Formation

• Coherent formation
• Pleistocene
• Correlation: Middle Terrace Deposits (Saigo), Older Fan Deposits, Middle I Terrace Deposits (Hosshojigawa river)

• Climate: Cold temperate
• Lithofacies: Gravels, Mud
• Lithofacies (Minor): Sands

• Thickness: ca. 8 - 10 m
• Upper limit: Unconformity (DMP)

• Distribution: Yumachi, Tamayu town, Matsue city, Shimane pref.
• Fossils (Pollen): Buxus sp., Cryptomeria sp., Picea sp., Pinus sp., Tsuga sp.

• 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.)