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Central zone

Invalid synonym: Yakuno Central Subzone, Yakuno central zone

• Paleozoic volcanic island arc in the ocean (Yakuno paleo-island arc)
• Accretionary complex
• Back-arc basin
• Mata-mafic rocks: early Permian (285 Ma, Radiometric)
• Sedimentary rocks: middle- late Permian (Radiolarians)

• Lithofacies (Minor, so called Yakuno Ophiolite): Metagabbro, Tonalite

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

• Distribution: Fukui pref. - Kyoto pref. - Hyogo pref. - Hiroshima pref.

• Kimura et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.2, pp.153-165 DOI
• Suda and Hayasaka (2009) Jour. Geol. Soc. Japan, vol.115, no.6, pp.266-287 DOI
• Takemura et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.123-137 DOI
• Kobayashi (2008) Jour. Geol. Soc. Japan, vol.114, no.2, pp.80-87 DOI
• Igi and Kuroda (1965) Oeyama, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 81p. (in Japanese with English abstract 12p.)
• Igi et al. (1961) Maizuru, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 49p. (in Japanese with English abstract 9p.)