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Tanjosan Tuff Breccia

Invalid synonym: Tanjosan Formation

• Volcanic rocks
• Late Cretaceous
• Correlation: lower Hiraki Welded Tuff, Moshi Welded Tuff, Sakaino Formation

• Lithofacies (Top): Welded tuff
• Lithofacies: Tuff Breccia

• Thickness: ca. 300 m
• Lower limit: Transitional (Tsukuhara Formation), Abut unconformity (Tamaze Formation)

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

• Distribution: Mount Tanjosan - Mount Shibireyama - Mount Shibureyama - Donto dam, Kita ward, Kobe city, Hyogo pref.

• 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.)
• Huzita and Kasama (1983) Geology of the Kobe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 115p. (in Japanese with English abstract 8p.)