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Shimonoseki Subgroup

• Volcanic rocks
• Early Cretaceous (107 - 103 Ma, K-Ar)

• Sedimentary facies: Terrestrial
• Lithofacies: Andesite lava, Andesitic lapilli tuff
• Lithofacies (Minor): Tuff, Tuff breccia, Shale

• Thickness: ca. 2,000 m

• Distribution: Futanoi, Awano, Hohoku town, Shimonoseki city, Yamaguchi pref.; Shiroyama - Kawara, Kanda, Hohoku town, Shimonoseki city, Yamaguchi pref.; Toyonishi - Utsui, Shimonoseki city, Yamaguchi pref.

• Imaoka et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.7, pp.529-553 DOI
• Ota et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.5, pp.289-298 DOI
• Yoshida et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.12, pp.643-657 DOI
• Horiuchi and Hisada (2008) Jour. Geol. Soc. Japan, vol.114, no.9, pp.447-460 DOI