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Hanakami Tuff Breccia Akahane, 1980

• Tephra
• late Miocene

• Lithofacies (Upper): Rhyolite tuff, Lapilli tuff, Pumice tuff
• Lithofacies (Lower): Rhyolite tuff breccia, Volcanic breccia
• Lithofacies (Lower, Minor): Rhyolite lava

• Thickness: 100 - 250 m

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

• Distribution: Nagano pref.

• Kato and Akahane (1986) Geology of the Nagano District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 120p. (in Japanese with English abstract 5p.)