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Nachisan volcano Isshiki, 1982

Invalid synonym: Nachisan Lava

• Type locality: Kozushima city, Tokyo
• Volcanic rocks
• Monogenetic volcano
• Pleistocene

• Sedimentary facies: Lava dome, Pyroclastic cone
• Lithofacies: Biotite rhyolite lava

• Distribution (South - North): ca. 1.5 km
• Distribution (East - West): ca. 1.4 km
• Distribution (Height): ca. 100 m
• Upper limit: Unconformity (Tenjosan volcano, Chichibuyama Pyroclastic Deposits)
• Lower limit: Unconformity (Chichibuyama Pyroclastic Deposits, Nagahama volcano, 262m-yama volcano)

• Distribution: southwest of Mount Tenjosan - Nachido, Kozushima city, Tokyo

• Isshiki (1982) Geology of the Kozushima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 75p. (in Japanese with English abstract 3p.)