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Gamano Granodiorite

Invalid synonym: Gamano Gneissose Granodiorite

• Type locality: Gamano, Suooshima city, Oshima county, Yamaguchi prefecture
• Plutonic rocks
• Late Cretaceus (100.0 - 94.7 Ma, 89.5 Ma, K-Ar; U-Pb; 95.1 Ma, CHIME)
• Intruded by: Kibe Granite, Tengadake Migmatite, Tajiri Granite, Nakayamagawa Complex, Iwakuni Granite, Takatoyama Felsite Dike Swarms
• Intruded in: Kuga Group

• Lithofacies: Biotite granodiorite
• Lithofacies (Minor): Hornblende biotite granodiorite, Garnet biotite granodiorite, Biotite granite, Tonalite, Quartz diorite
• Structures: Foliated, Enclaves (Banded gneiss)

------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Tsuzu - Yuu - Ikachi - Tajiri - Yokomichi - Maeba - Kuroshima island, Iwakuni city, Yamaguchi pref.; Hizumi, Yanai city, Yamaguchi pref.; Yashiro island - Gamano - Maeshima island, Suooshima city, Oshima county, Yamaguchi pref.; Tanoshirihana cape, Suooshima city, Oshima county, Yamaguchi pref.; Murotsu peninsula, Kaminoseki city, Kumage county, Yamaguchi pref.; Tsukari - Kurokui, Hikari city, Yamaguchi pref.; Komatsubara, Shunan city, Yamaguchi pref.

• Ikeda et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.2, pp.167-182 DOI
• Terabayashi et al. (2017) Jour. Geol. Soc. Japan, vol.123, no.8, pp.599-612 DOI
• Kamitomo et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.2, pp.88-91 DOI
• Matsuura (1997) Geology of the Kurahashi Jima and Hashira Jima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 53p. (in Japanese with English abstract 4p.)
• Higashimoto et al. (1983) Geology of the Iwakuni District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 6p.)