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Harayama Gravel Formation

• Coherent formation
• early Pleistocene

• Sedimentary facies: Talus deposit along a fault
• Lithofacies: Gravels
• Lithofacies (Minor): Clay

• Thickness: ca. 20 m

• Distribution: Harayama - Uchigaito, Shingu town, Takayama city, Gifu pref.

• Kawada (1982) Geology of the Mikkamachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 72p. (in Japanese with English abstract 6p.)