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Futanoigawa Rhyolite Tuff Member Yoshida et al., 2009

• Shiratakiyama caldera
• Volcano-plutonic complex
• Volcanic rocks
• Late Cretaceous

• Lithofacies: Rhyolite
• Lithofacies: Welded tuff, Lapilli tuff, Tuff
• Lithofacies (Upper, Minor): Siltstone
• Lithofacies (Lower, Minor): Siltstone, Sandstone, Tuffaceous sandstone, Andesite lava (Hyaloclastite), Andesite volcaniclastic rocks
• Lithofacies (Bottom): Non-welded tuff
• Sedimentary structures: Parallel stratification

• Thickness: 1,000 - 1,200 m
• Upper limit: Conformity

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

• Distribution: Mount Shirataki, Shimonoseki city, Yamaguchi pref.

• Yoshida et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.12, pp.643-657 DOI