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Eboshiyama Formation (Fujii, 1959) Takeuchi et al., 2017

Invalid synonym: Sasagawa Welded Tuff

• Type locality: Sasagawa river, Asahi city, Shimoniikawa county, Toyama prefecture
• Volcanic rocks
• Paleogene (66 - 54 Ma, U-Pb, FT)
• Correlation: Ishizaka Formation

• Lithofacies: Rhyolite pyroclastic flow deposit
• Lithofacies: Welded lapilli tuff
• Lithofacies (Minor): Rhyolite lava

• Thickness: ca. 300 - 900 m
• Thickness (Minor): 8 m
• Lower limit: Unconformity (Oyashirazu Formation)

• Distribution: Sasagawa river - Kongogawa river - Funagawa river, Asahi city, Shimoniikawa county, Toyama pref.; Oritate, Unazuki town, Kurobe city, 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.)