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- Lithofacies: Hornblende gabbro, Biotite hornblende gabbro, Biotite hornblende quartz diorite
- Distribution: Marginal parts of the pluton
------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Nonomae - Tonohata - Sunagohama - Myojindo, Sanriku town, Ofunato city, Iwate pref.; Takisawa, Tono city, Iwate pref.
- Nishioka and Yoshikawa (2004) Geology of the Ryori District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 49p. (in Japanese with English abstract 3p.)