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Kanpo Volcanic Rocks (Ota, 1957) Geshi and Takeuchi, 2012

Invalid synonym: Kanpo Lava, Kanpo Formation

• Type locality: Mount Kanpo, Naganohara city, Agatsuma county, Gunma prefecture
• Volcanic rocks
• Stratovolcano
• Early Pleistocene (1.2 - 0.9 Ma, K-Ar)
• Intruded by: Andesite dikes

• Sedimentary facies: Terrestrial
• Sedimentary facies: Volcanic fan
• Lithofacies: Calc-alkaline
• Lithofacies: Volcanic conglomerate, Pyroxene andesite lava, Interbedded andesitic tuff breccia, Andesitic volcanic breccia and andesite lava

• Source: Sugao, Higashiagatsuma city, Agatsuma county, Gunma pref.
• Thickness: 400 m or thicker
• Thickness (Lava): 150 m or thicker
• Upper limit: Unconformity (Older Haruna Volcanic Fan Deposit, Hagiu Formation)
• Lower limit: Unconformity (Banki Lava, Aimagawa Formation)

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

• Distribution: Mount Kanpo, Naganohara city, Agatsuma county, Gunma pref.; Nurukawa - Mount Sasatoya, Higashiagatsuma city, Agatsuma county, Gunma pref.; Mount Asamakakushi, Naganohara city - Higashiagatsuma city, Agatsuma county, Nagano pref.

• Nakamura et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.8, pp.397-412, DOI
• Geshi and Takeuchi (2012) Geology of the Haruna San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 3p.)
• Ota (1957) Kusatsu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 75p. (in Japanese with English abstract 8p.)