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Mumayagawa Formation

• Volcanic rocks
• Caldera
• Late Cretaceous - Paleogene

• Sedimentary facies: Subaqueous deposits
• Lithofacies: Tuffaceous sandstone, Mudstone

• Thickness: 100 m

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Gifu pref.

• Yamada et al. (1985) Geology of the Takayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 9p.)
• Kawada (1982) Geology of the Mikkamachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 72p. (in Japanese with English abstract 6p.)