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Shimashima Complex (Otsuka, 1986) Otsuka, 1988
Invalid synonym: Shimashima Formation, Shimashima Belt, Futamata Formation, Ichinosawa Formation
- Type locality: Shimashimadani valley, Azumi, Matsumoto city, Nagano prefecture
- Accretionary complex
- Deposition (Chert): Early - Late Triassic, Oleneklan - Rhaetian (Conodonts)
- Deposition (Mudstone, Siliceous mudstone): Middle - Late Jurassic (Radiolarians)
- Accretion: Middle - Late Jurassic
- Intruded by: Kinshouji Granite
- Correlation: Kanayama Formation
- Sedimentary facies: Marine
- Lithofacies: Mélange facies
- Matrix: Mudstone, Siliceous mudstone, Sandstone
- Exotic blocks (Crusts): Chert, Siliceous mudstone, Sandstone, Siliceous claystone, Tuffaceous siltstone
- Exotic blocks (Slabs): Interbedded sandstone and mudstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shimashimadani valley - Azusagawa river - Lake Azusako - Kurokawa river - Nagawa river - Kotakezawa creek - Atsusawa creek - Tochisawa creek - Midonogawa river - Kamanosawa creek - Kurosawa creek, Azumi, Matsumoto city, Nagano pref.; Iwaoka shrine, Minamiozuma, Matsumoto city, Nagano pref.; Nishinogawa river, Kiso city, Kiso county, Nagano pref.; Mount Komikasayama - Denjogawa river, Otaki city, Kiso county, Nagano pref.; Hiwada, Takane town, Takayama city, Gifu pref.
- Fossils (Chert, Conodonts): Epigondolella abneptis, Epigondolella bidentata, Epigondolella nodosa, Epigondolella primitive, Gondolella excelsa, Gondolella polygnathiformis, Misikella hernsteini, Misikella posthernsteini
- Fossils (Radiolarians): Amphipyndax durisaeptum, Eucyrtidiellum sp., Eucyrtidium sp., Hsuum sp., Stichocapsa japonica, Stichocapsa aff. robusta, Striatojaponocapsa sp., Stylocapsa catenarum, Tricolocapsa? fusiformis, Tricolocapsa plicarum, Williriedellum sp.
- Harayama et al. (2009) Geology of the Matsumoto District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 63p. (in Japanese with English abstract 3p.)
- Yamakita and Otoh (2000) Structural Geology, vol.44, pp.5-32
- Nakano et al. (1995) Geology of the Norikuradake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 139p. (in Japanese with English abstract 4p.)
- Harayama (1990) Geology of the Kamikochi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 175p. (in Japanese with English abstract 11p.)
- Yamada and Kobayashi (1988) Geology of the Ontakesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 9p.)