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Minamidake Tuff Breccia Harayama, 1990
Invalid synonym: Shishihana Formation
- Type locality: Shishihana, Mount Minamidake, Matsumoto city, Nagano prefecture
- Volcanic rocks
- early Pleistocene
- Intruded by: Diorite porphyry, Rhyolite dykes
- Lithofacies: Tuff breccia, Lapilli tuff, Andesitic tuff
- Lithofacies (Minor): Tuff, Vitreous crystalline tuff
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shishihana, Mount Minamidake - Yokoo ridge, Matsumoto city, Nagano pref.
- Harayama et al. (1991) Geology of the Yarigatake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 190p. (in Japanese with English abstract 8p.)
- Harayama (1990) Geology of the Kamikochi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 175p. (in Japanese with English abstract 11p.)