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Shimokuno Granite (Yamamoto, 1954) Kano et al., 1994

Invalid synonym: Yamasa Granite

• Type locality: Shimogumi, Shimokuno, Daito town, Unnan city, Shimane prefecture
• Plutonic rocks
• Paleocene (53.8, 53.3 Ma, K-Ar; 61.9, 61.2 Ma, Rb-Sr; 67 - 60 Ma, Re-Os)
• Intruded by: Fube Granite, Ouchidani Granite
• Intruded in: Toriyago Metamorphic Rocks, Yakumo Volcanic Rocks, Hiyodori Granite, Daito Granodiorite, Kawai Hybrid Rocks, Shiota Body, Granite porphyry dikes
• Correlation: Ouchidani Granite, Umegi Granite

• Lithofacies: Biotite granite
• Lithofacies (Minor): Granophyre, Muscovite biotite granite

• Distribution (Width): 2 - 4 km
• Distribution (Length): ca. 23 km
• Upper limit: Unconformity (Hata Formation, Kawai Formation)

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

• Distribution: Shimokuno - Sakamizu, Unnan city, Shimane pref.; Obara - Yokota, Okuizumo city, Shimane pref.; Wakamatsudani, Matsue city, Shimane pref.; Shimoyamasa - Sugahara - Tsukisaka town - Inari town - Shimoyamasa - Kamiyamasa, Yasugi city, Shimane pref.
• Deposits (Mo): Kamiyamasa mine

• Kano et al. (2025) Geology of the Yonago District (2nd Ed.), Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 84p. (in Japanese with English abstract 4p.)
• Nishida (2013) Jour. Geol. Soc. Japan, vol.119, no.4, pp.229-248 DOI
• Yakushiji et al. (2012) Jour. Geol. Soc. Japan, vol.118, no.1, pp.20-38 DOI
• Matsuura et al. (2005) Geology of the Kisuki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 5p.)
• Kano et al. (1994) Geology of the Matsue District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 126p. (in Japanese with English abstract 5p.)