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Abu Group
- Volcano-plutonic complex
- Volcanic rocks
- Late Cretaceous (79.7 - 88.4 Ma, Rb-Sr)
- Sedimentary facies: Terrestrial
- Sedimentary facies (Minor): Lacustrine
- Lithofacies: Felsic volcanic rocks
- Lithofacies: Rhyolitic pyroclastic flow deposit
- Lithofacies: Rhyolitic - dacitic tuff, welded tuff, volcanic lapilli tuff, Rhyolitic lava
- Lithofacies (Minor): Andesite lava, Tuffaceous sandstone, Mudstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Yamaguchi pref. - western Shimane pref.
- Distribution: Nagato city - Hohoku town, Shimonoseki city, Yamaguchi pref.; Kawakami - Fukue, Hagi city, Yamaguchi pref.; Tokuzi, Yamaguchi city, Yamaguchi pref.
- Aiyama and Kanaori (2019) Jour. Geol. Soc. Japan, vol.125, no.7, pp.555-570 DOI
- Imaoka et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.7, pp.529-553 DOI
- Imaoka et al. (2012) Jour. Geol. Soc. Japan, vol.118, no.12, pp.782-800 DOI
- Yoshida et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.12, pp.643-657 DOI
- Kishi et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.9, pp.479-491 DOI