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Nakamachi Gravel Bed

• Coherent formation
• Pleistocene
• Correlation: Shirotoge Gravel Bed

• Lithofacies: Gravels
• Lithofacies (Minor): Sands, Mud

• Thickness: ca. 5 m
• Lower limit: Unconformity (Granite)

• Distribution: Nakamachi, Etajima city, Hiroshima pref.

• Matsuura et al. (1999) Geology of the Itsuku Shima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 37p. (in Japanese with English abstract 3p.)