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Kashiwagi Unit Fujimoto, 1935
Synonym: Hashidate Unit (Hashidate, Chichibu city, Saitama pref.)
Invalid synonym: Kashiwagi Group, Kashiwagi Formation, Hashidate Group
- Type locality: Kashiwagi, Kanna city, Gunma prefecture
- Accretionary complex
- Deposition (Siliceous rocks): Jurassic (Radiolarians)
- Deposition (Matrix): Late Jurassic - Early Cretaceous (Radiolarians)
- Accretion: Jurassic
- Correlation: Nanogawa Formation (Ehime pref.), Odamiyama Formation (Ehime pref.), Sakahara Formation (Gunma pref.)
- Sedimentary facies: Marine
- Metamorphic facies: Pumpellyite-Actinolite
- Lithofacies: Mélange facies
- Matrix: Slate, Mudstone, Pale green siliceous tuff
- Exotic blocks (Crusts): Pale red chert, Limestone
- Thickness: ca. 350 - 1,500 m
- Upper limit: Thrust fault
- Lower limit: Thrust fault
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Urayama dam, Chichibu city, Saitama pref.; Naraozawa - Kamisora fall - Hinosawa, Minano city, Chichibu county, Saitama pref.; Yasudo - Mount Kannonyama - Matsukidaira, Higashichichibu city, Chichibu county, Saitama pref.; Mount Tokiyama - Koshinaka - Akagi, Ogawa city, Hiki county, Saitama pref.; Kashiwagi - Sakahara - Manba, Kanna city, Tano county, Gunma pref.
- Fossils (Siliceous rock, Radiolarians): Archaeodictyomitra sp., Eucyrtidiellum sp., Husuum sp.
- Fossils (Sakahara Formation, Limestone, Conodonts): Epigondolella abneplis
- Fossils (Sakahara Formaiton, Chert, Conodonts): Neospathodus homeri
- Fossils (Sakahara Formation, Mudstone, Radiolarians): Gongylothorax sp.
- Uchino and Suzuki (2017) Jour. Geol. Soc. Japan, vol.123, no.12, pp.1015-1033 DOI
- Hisada et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.7, pp.325-342, DOI
- Tsuji and Sakakibara (2009) Jour. Geol. Soc. Japan, vol.115, no.1, pp.1-16 DOI
- Makimoto and Takeuchi (1992) Geology of the Yorii District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)
- Okubo and Horiguchi (1969) Geology of the Mamba District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 65p. (in Japanese with English abstract 5p.)