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Manba Subunit Fujimoto, 1935

Invalid synonym: Manba Group, Manba Formation, Lower Jomine Subunit

• Type locality: Manba, Kanna city, Gunma prefecture
• Accretionary complex
• Deposition (Limestone): Late Carboniferous - Permian, Middle - Late Triassic (Fusulinids)
• Deposition (Chert): Late Carboniferous - Permian - Triassic (Radiolarians, Conodonts)
• Deposition (Matrix): Middle Jurassic (Radiolarians)
• Accretion: Jurassic

• Sedimentary facies: Marine
• Metamorphic facies: Pumpellyite-Actinolite
• Lithofacies: Mélange facies
• Matrix: Mudstone
• Matrix (Minor): Siliceous shale, Sandstone
• Exotic blocks (Crusts): Green rocks
• Exotic blocks (Crusts, Minor): Chert, Limestone

• Thickness: 600 - 1,100 m
• Upper limit: Thrust fault
• Lower limit: Thrust fault

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

• Distribution: Kanna river - Mount Tetemiezu, Manba, Kanna city, Tano county, Gunma pref.
• Fossils (Limestone, Fusulinids): Neoschwagerina margaritae, Neoschwagerina nipponica, Parafusulina sp., Pseudofusulina sp., Triticites matsumotoi, Yabeina sp.
• Fossils (Limestone, Conodonts): Adelognathus lautus, Gnathodus? nagatoensis, Idiognathodus parvus, Idiognathodus sinuatus, Idiognathoides corrugalus, Idiognathoides noduliferous, Neognathodus bassleri symmetricus, Neogondolella cf. rosenkrantzi
• Fossils (Chert, Conodonts): Idiognathodus parvus
• Fossils (Mudstone, Radiolarians): Archaeodictyomitra sp., Dictyomitrella? sp., Gongylothorax sp., Tricolocapsa plicarum

• Hisada et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.7, pp.325-342, 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.)