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Karasawagawa Volcanics Mukai et al., 2009

• Volcanic rocks
• early Pleistocene (2.07 Ma, K-Ar)

• Sedimentary facies: Terrestrial
• Lithofacies: Andesitic - Dacitic tuff breccia, Volcanic breccia, Andesite lava

• Thickness (Overall): 300 m
• Thickness (A unit): 5 - 20 m
• Upper limit: Abut (Hirokoba Lava)
• Lower limit: Unconformity (Karasawa Granodiorite)

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

• Distribution: 1,200 - 1,700 m above sea level of Utsukushigahara plateau, Nagano pref.
• Distribution: 1,200 - 1,450 m above sea level of Wada river - Omekura river, Nagawa city, Chiisagawa county, Nagano pref.

• Makino et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.7, pp.249-260, DOI
• Mukai et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.8, pp.400-422 DOI