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Tadamigawa Older Granites

• Plutonic rocks
• Cretaceous - early Paleogene

• Lithofacies: Biotite granite

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

• Distribution: Ginzandaira - Nakanomata river - Futamata river - Koinomata river - Kitanomata river, Uonuma city, Niigata pref.

• Chihara and Komatsu (1992) Geology of the Hakkaisan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 107p. (in Japanese with English abstract 8p.)