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Odogamori Dacite (Miyagi prefecture, 1991) Tsuchiya et al., 1997

Invalid synonym: Ishigamori Andesite

• Volcanic rocks
• late Miocene (5.5 Ma, K-Ar)

• Lithofacies: Augite hypersthene dacite lava
• Lithofacies (Minor): Volcanic breccia, Tuff breccia

• Upper limit: Unconformity (Onoda Formation)
• Lower limit: Unconformity (Hosokura Formation)

• Distribution: Mount Odogamori, Uguisuzawa, Kurihara city, Miyagi pref.; Shimobatake, Hanayama, Kurihara city, Miyagi pref.

• Tsuchiya et al. (1997) Geology of the Iwagasaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 96p. (in Japanese with English abstract 4p.)