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Shirasawa Tuff Breccia Kato et al., 1989

• Type locality: Shirasawa creek, Kagokawa river, Omachi city, Nagano prefecture
• Volcanic rocks
• Caldera complex
• early Pleistocene

• Sedimentary facies: Terrestrial
• Lithofacies: Caldera-collapse breccia
• Lithofacies: Tuff breccia

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

• Distribution: Shirasawa creek, Kagokawa river, Omachi city, Nagano pref.

• Kato et al. (1989) Geology of the Omachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 7p.)