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Korengeyama Granodiorite Nakano et al., 2002

• Type locality: Mount Korengesan - Lake Hakubaoike, Otari city, Kitaazumi county, Nagano prefecture - Itoigawa city, Niigata prefecture
• Intrusive rocks
• Pliocene (3.43 Ma, K-Ar)
• Intruded in: Shiroumazawa Formation, Felsic rocks

• Sedimentary facies: Shallow intrusion
• Lithofacies: Porphyritic hornblende biotite granodiorite, Tonalite
• Lithofacies (Marginal): Biotite hornblende granodiorite porphyry

• Distribution (Length): ca. 6 km
• Distribution (Width): ca. 1 km

• Distribution: Mount Korengesan, Otari city, Kitaazumi county, Nagano pref. - Itoigawa city, Niigata pref.; Lake Hakubaoike - Tenguhara - Tsunzawa, Otari city, Kitaazumi county, Nagano pref.; Shiroumazawa creek, Hakuba city, Kitaazumi county, Nagano pref.; Renge hot spring, Itoigawa city, Niigata pref.

• Nakano et al. (2002) Geology of the Shiroumadake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 105p. (in Japanese with English abstract 5p.)