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Shirane Group (Matsushima et al., 1956) Kano and Matsushima, 1988

Invalid synonym: Shirane Belt

• Accretionary complex
• Deposition (Limestone): Late Jurassic - Cretaceous (Corals, Rudists)
• Deposition (Chert): Late Jurassic - Late Cretaceous (Radiolarians)
• Deposition (Clastic rocks): Early Cretaceous, Albian - Late Cretaceous, Campanian (Radiolarians)
• Accretion: Neogene
• Intruded by: Kaikoma Granite

• Sedimentary facies: Marine
• Sedimentary facies (Basalt): OIB (Oceanic island basalt)
• Lithofacies: Mélange facies
• Matrix: Interbedded sandstone and shale, Shale
• Exotic blocks (Crusts): Basalt, Chert, Limestone
• Lithofacies (Minor): Felsic tuff

• Distribution (Width): 6 - 10 km

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

• Distribution: Nagano pref.; Mount Hijiridake - Mount Tekaridake, Nagano pref. - Shizuoka pref.; Mount Kitadake, Yamanashi pref.; Mount Warusawadake (Mount Arakawadake), Shizuoka pref.; Mount Shiomidake - Tashiro dam, Aoi ward, Shizuoka city, Shizuoka pref.; Mount Kamikochidake, Shizuoka city, Shizuoka pref.; Mount Tosakayama, Kawanehoncho city, Haibara county, Shizuoka pref.; Mizukubo river, Tenryu ward, Hamamatsu city, Shizuoka pref.; Nikengoya, Hayakawa city, Minamikoma county, Yamanashi pref.; Norogawa river, Minami-Alps city, Yamanashi pref.
• Fossils (Limestone): Hexacorals, Rudists

• Ozaki and Sugiyama (2018) Geology of the Minobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 169p. (in Japanese with English abstract 7p.)
• Tokiwa et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.7, pp.539-544 DOI