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Oga Porphyrite

• Intrusive rocks
• Pliocene?

• Lithofacies: Porphyrite
• Structures: Columnar joints

• Distribution: Ojirodani, Kami city, Miakata county, Hyogo pref.; Higashiinaba forest road, Shinonsen city, Mikata county, Hyogo pref.; Oga - Mount Oginosen, Tottori city, Tottori pref.

• Uemura et al. (1979) Geology of the Wakasa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 8p.)