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Highland Gravel Bed

• Coherent formation
• Pleistocene

• Sedimentary facies: Fluvial
• Lithofacies: Gravels

• Thickness: 25 m

• Distribution: Honmura - Yuno, Niimi city, Okayama pref.

• Hattori (1978) Geology of the Kami-Iwami District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 65p. (in Japanese with English abstract 4p.)