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Nishikubiki Hypabyssal Rocks Akahane, 1975

• Plutonic rocks
• Miocene - Pleistocene (1.35 1.2 Ma, K-Ar)
• Intruded in: Nodani Formation, Nanbayama Formation

• Sedimentary facies: Stocks, Sills
• Lithofacies: Quartz diorite porphyry, Diorite porphyry

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

• Distribution: Mount Kagomachi-Nanbasan, Myoko city, Niigata pref.; Mount Aota-Nanbasan, Joetsu city, Niigata pref.; Mount Hokogatake - Mount Hiuchiyama - Mount Amakazariyama, Itoigawa city, Niigata pref.

• Akahane and Kato (1989) Geology of the Takada-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 89p. (in Japanese with English abstract 3p.)