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Echigosawa Porphyrite Kobayashi et al., 1978

• Intrusive rocks
• Neogene
• Intruded in: Okutone Group

• Sedimentary facies: Stock
• Lithofacies: Hornblende porphyrite

• Distribution: Echigo creek, Minakami city, Tone county, Gunma 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.)