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Akana Granodiorite Yoshida, 1961

Invalid synonym: Uokiridani Granodiorite

• Type locality: Kijima dam, Iinan city, Iishi county, Shimane prefecture
• Plutonic rocks
• Paleocene (64.3 Ma, K-Ar; 63.4 Ma, Rb-Sr)
• Correlation: Daito Granodiorite
• Intruded by: Onbara Granite, Ijimi Granite, Shimotone Body, Nogaya Body, Maki Body, Sakedani Tonalite, Aplite, Granite porphyry dikes, Granophyre dikes, Porphyrite dikes
• Intruded in: Shinzojiyama Rhyolites, Hanyagawa Gabbro

• Lithofacies (Central facies): Hornblende biotite granodiorite
• Lithofacies (Marginal facies): Granodiorite porphyry
• Lithofacies (Minor): Gabbro, Quartz diorite, Tonalite

• Distribution (Length): ca. 26 km
• Distribution (Width): ca. 2 - 9 km
• Upper limit: Unconformity (Tsuremizu Volcanic Rocks, Higher Terrace Deposits)

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

• Distribution: Uokiridani - Tsuga, Misato city, Ochi county, Shimane pref.; Kada - Kijima dam - Shishi - Akana - Tonbara, Iinan city, Iishi county, Shimane pref.

• Kano (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.781-803 DOI
• Matsuura (1990) Geology of the Akana District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 73p. (in Japanese with English abstract 5p.)
• Hattori et al. (1983) Geology of the Sambesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 168p. (in Japanese with English abstract 7p.)