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Ogi Quartz Diorite Iizumi and Sawada, 1980

• Type locality: Hiikawa river, Ogi - Odakara, Yoshida town, Unnan city, Shimane prefecture
• Plutonic rocks
• Older than Paleocene (61.2 Ma, Rb-Sr)
• Intruded by: Daito Granodiorite, Odakara Granodiorite, Hiyodori Granite
• Correlation: Nakano Body, Ushiroyama Body, Hoin Body, Ashihara Body, Misawa Body

• Lithofacies: Biotite hornblende quartz diorite, Tonalite

• Distribution (East - West): ca. 1.4 km
• Distribution (South - North): ca. 0.8 km

• Distribution: Obara, Okuizumo city, Shimane pref.; Ogi, Yoshida town, Unnan city, Shimane pref.
• Deposit: Protolith of iron sands

• 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.)