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Takatoyasan Group

A member of Kobotoke Belt

• Type locality: Mount Takatoyasan, Kawakami city, Minamisaku county, Nagano prefecture
• Accretionary complex
• Accretion: Cretaceous

• Sedimentary facies: Marine
• Lithofacies: Interbedded sandstone and slate
• Lithofacies (Minor): Diabase, Chert

• Thickness: 5,000 m
• Upper limit: Unconformity (Meshimoriyama Volcanics)

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

• Distribution: Mount Takatoyasan, Kawakami city, Minamisaku county, Nagano pref.

• Kawachi (1977) Geology of the Yatsugatake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 92p. (in Japanese with English abstract 4p.)