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Arahara Formation

• Coherent formation
• Jurassic - Cretaceous

• Lithofacies: Interbedded shale and sandstone
• Lithofacies (Minor): Shale, Sandstone, Conglomerate

• Distribution: Kurabashiragawa river, Kurabashira, Kamitakara town, Takayama city, Gifu pref.

• Isomi and Nozawa (1957) Funatsu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 43p. (in Japanese with English abstract 8p.)