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Takashiroyama Formation Ishiga et al., 1987

• Accretionary complex
• Deposition (Shale): Middle - Late Jurassic
• Accretion: Jurassic

• Sedimentary facies: Marine
• Lithofacies: Coherent facies
• Lithofacies: Sandstone
• Lithofacies (Minor): Shale, Interbedded sandstone and shale

• Thickness: ca. 235 - 450 m
• Upper limit: Thrust fault (Kamitaki Formation, Ajima Formation)
• Lower limit: Thrust fault (Fujioka Complex, Jonan Complex)

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

• Distribution: Ajima, Tambasasayama city, Hyogo pref.
• Fossils (Radiolarians): Protunuma sp., Tricolocapsa cf. conexa

• Kurimoto et al. (1993) Geology of the Sasayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)
• Imoto et al. (1991) Geology of the Sonobe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 68p. (in Japanese with English abstract 4p.)