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Koizumiyama Diorite

• Plutonic rocks
• middle - late Miocene
• Intruded by: Chino Granodiorite, Meta-diabase

• Lithofacies: Diorite

• Distribution: Mount Koizumiyama, Chino city, Nagano pref.

• Makimoto et al. (1996) Geology of the Takato District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 6p.)