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Jiigatake Volcanics (Ishizawa, 1982) Harayama et al., 2000

• Type locality: Happozawa creek, Hakuba city, Kitaazumi county, Nagano prefecture - Gakidani valley, Kurobe city, Toyama prefecture
• Volcanic rocks
• early Pleistocene (2.0 - 1.2 Ma, K-Ar; 1.7 Ma, U-Pb)
• Intruded by: Osawa Granite Porphyry, Kurobegawa Granite
• Intruded in: Kosubarisawa Granite, Ariake Granite

• Sedimentary facies: Terrestrial
• Lithofacies: Rhyolite welded tuff, Rhyolite lava, Biotite hornblende rhyolite tuff
• Lithofacies (Minor): Dacite - Andesite lava, Tuff

• Thickness: 4,900 m
• Lower limit: Unconformity (Daikokudake Granodiorite, Ariake Granite)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Happozawa creek - Tomizawa creek - Shiratakezawa creek, Hakuba city, Kitaazumi county, Nagano pref.; Gakidani valley, Kurobe city, Toyama pref.; Maruishizawa creek - Kashiwabara forest road - Mount Kashimayarigadake - Ogisawa - Kurosawa creek - Kitakuzusawa creek, Omachi city, Nagano pref.; Mount Harinokidake - Mount Jiigatake - Mount Rengedake - Mount Kitakuzudake - Taneike mountain villa - Mount Subaridake, Tateyama city, Nakaniikawa county, Toyama pref. - Omachi city, Nagano pref.; Mount Goryudake, Kurobe city, Toyama pref. - Omachi city, Nagano pref.; Mount Daikokudake - Karamatsu mountain villa, Kurobe city, Toyama pref. - Hakuba city, Kitaazumi county, Nagano pref.; Osubarizawa - Kosubarizawa, Tateyama city, Nakaniikawa county, Toyama pref.

• Harayama (2015) Jour. Geol. Soc. Japan, vol.121, no.8, pp.293-308, DOI
• Harayama et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.63-81 DOI
• 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.)
• Harayama et al. (2000) Geology of the Tateyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 218p. (in Japanese with English abstract 6p.)