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Eboshi Lava (Nakano, 1984) Harayama, 1990

Invalid synonym: Jukkoku Volcanic Rocks

• Type locality: Norikura skyline, Hirayu, Okuhidaonsengo, Takayama city, Gifu prefecture
• Volcanic rocks
• Pleistocene (0.27, 0.21 Ma, K-Ar)

• Sedimentary facies: Composite lava flow
• Lithofacies: Biotite hornblende augite hypersthene andesite lava (3 - 4 flow units)
• Lithofacies (Minor): Biotite hornblende dacite lava, Pyroclastic flow deposit, Silt, Sands

• Source: south of Abodaira
• Thickness: 150 - 500 m
• Upper limit: Unconformity (Yotsudake Lava, Kikyogahara Lava, Marishiten Lava, Bandokoro Lava, Ebisu Lava, Kuraigahara Lava, Hiragane Lava, Iwaidani Lava)
• Lower limit: Unconformity (Dayoshi Formation)

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

• Distribution: Hirayu pass - Norikura skyline - Mount Iodake - Mount Nekodake - Mount Okuzureyama, Hirayu, Okuhidaonsengo, Takayama city, Gifu pref.; Mount Eboshidake - Ikenomata - Kutemikoshidani valley, Nyukawa town, Takayama city, Gifu pref.; Mount Jukkokuyama - Shojikawasezawa creek - Shirahone hotspring - Sebadani valley - Abodaira, Azumi, Matsumoto city, Nagano pref.

• Nakano et al. (1995) Geology of the Norikuradake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 139p. (in Japanese with English abstract 4p.)
• Harayama (1990) Geology of the Kamikochi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 175p. (in Japanese with English abstract 11p.)
• Yamada et al. (1985) Geology of the Takayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 9p.)