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Kirigamine Volcanics

• Volcanic rocks
• Shield volcano
• early - Middle Pleistocene (1.3 - 0.75 Ma, K-Ar)

• Sedimentary facies: Terrestrial
• Lithofacies: Hornblende andesite, Olivine two-pyroxene andesite lava
• Lithofacies (Minor): Dacite

• Thickness (A unit): Tens of 10 - 100 m
• Upper limit: Unconformity (Yatsugatake Mudflow Deposit)
• Lower limit: Unconformity (Chino Granodiorite)

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

• Distribution: Southeast Wada pass, Wada, Nagawa city, Nagano pref.

• Makino et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.7, pp.249-260, DOI
• Sawamura and Owa (1953) Suwa, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 45p. (in Japanese with English abstract 4p.)