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Iritono mass

• Plutonic rocks
• Cretaceous
• Intruded in: Gozaisho-Takanuki Metamorphic Rocks

• Lithofacies: Granodiorite
• Lithofacies (Minor): Adamellite, Hornblende gabbro, Cortlandite, Hornblende porphyrite

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

• Distribution: Mount Tsuruishi - Mount Futatsuishi - Mount Sandaimyojin - Mount Tengu, Iwaki city, Fukushima pref.

• Kano et al. (1973) Geology of the Takanuki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 109p. (in Japanese with English abstract 6p.)