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Akuda Mass

• Accretionary complex
• Deposition (Limestone): Permian (Fusulinids)
• Deposition (Chert): middle Permian (Conodonts)
• Accretion: Middle - Late Jurassic

• Sedimentary facies: Marine
• Lithofacies: Broken facies
• Matrix: Mudstone
• Exotic blocks (Slabs): Basalt lava, Tuff, Chert, Limestone

• Thickness (Width): 1.7 km
• Thickness (Length): 12 km

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

• Distribution: Akuda - Iruma, Gujo city, Gifu pref.
• Fossils (Limestone, Fusulinids): Acervoschwagerina fujimotoi, Cancellina nipponica, Maklaya pamirica, Mesoschubertella shimadaniensis, Minojaponella elongata, Misellina claudiae, Nankinella sp., Neofusulinella paraecursar, Neoschwagerina nipponica, Ozawainella sp., Parafusulina (Shinnerella) cf. sappeli, Parafusulina cf. japonica trunkata, Paraschwagerina yanagidai, Pseudofusulina ambigua, Pseudofusulina cf. crassiseptata, Pseudofusulina gujoensis, Pseudofusulina horadaniensis, Pseudofusulina kraffti, Pseudofusulina krotowi, Pseudofusulina nelsoni, Pseudofusulina otukai, Pseudofusulina paratschernyschewi, Pseudofusulina vulgaris pseudowatanabei, Pseudoschwagerina uddeni, Schbertell akingi, Schwagerina? annamitica, Staffella depressa
• Fossils (Conodonts): Anchignathodus minutus, Anchignathodus minutus minutus, Cypridodella spp., Diplognathodus augustus, Diplognathodus oertlii, Enantiognathus tribulosus, Hindeodella sp., Ligonadina sp., Lonchodina spp., Neogondolella gujioensis, Neogondolella idahoensis, Neogondolella intermedia, Neogondolella serrata serrata, Neostreptognathodus toriyamai, Sweetognathus whitel, Synprioniodina sp., Xaniograathus abstrctus, Xeniognathus deflectens, Xaniognthus sweeti

• Wakita (1984) Geology of the Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 89p. (in Japanese with English abstract 6p.)