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Kurobishiyama Formation (Kobayashi et al., 1957) Takeuchi et al., 2015

Invalid synonym: Kurobishiyama Conglomerate

• Type locality: Aimatadani valley, Asahi city, Shimoniikawa county, Toyama prefecture
• Coherent formation
• Early Cretaceous, Aptian
• Correlation (Lower): Yakushizawamigimata Conglomerate Member

• Lithofacies: Conglomerate, Sandstone
• Lithofacies (Minor): Mudstone
• Lithofacies (Bottom): Tuffaceous
• Sedimentary structures: Cross-stratification, Up-ward fining

• Thickness: 630 m
• Upper limit: Unconformity (Oyashirazu Formation, Uchiyama Formation)
• Lower limit: Conformity (Mizukamidani Formation)

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

• Distribution: Mount Kurobishiyama - Aimatadani valley - Asahi-Ogawa dam, Asahi city, Shimoniikawa county, Toyama pref.

• Takeuchi et al. (2017) Geology of the Tomari District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 121p. (in Japanese with English abstract 4p.)
• Takeuchi et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.7, pp.193-216, DOI
• Takeuchi et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.1, pp.1-17 DOI