[ Top ] [ Japanese ]

Okanaro Group (Miki and Eguchi, 1950)

• Type locality: Okanaro, Nomura village, Seiyo city, Ehime prefecture
• Coherent formation
• Silurian - Devonian

• Lithofacies (Main): Rhyolitic tuff
• Lithofacies (Minor): Tuff breccia, Tuffaceous mudstone, Mudstone, Limestone

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

• Distribution: Okanaro, Nomura village, Seiyo city, Ehime pref.; Yoshinozawa - Mount Mitaki, Shirokawa village, Seiyo city, Ehime pref.
• Fossils (Limestone): Favosites gotlandicus, Favosites sp., Halysites kitakamiensis, Halysites cf. japonicus, Stromatoporoids
• Fossils (Tuffaceous mudstone): Encrinurus sp. (Trilobites)

• Murata and Takahashi (2017) Jour. Geol. Soc. Japan, vol.123, no.8, pp.585-597 DOI