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Okuyama Tonalite

• Plutonic rocks
• late Eocene - early Oligocene
• Intruded in: Takahata Granite

• Lithofacies: Tonalite

• Distribution: Shimane pref.

• 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.)