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Onbasejima volcano Isshiki, 1982

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

• Sedimentary facies: Lava dome
• Lithofacies: Rhyolite lava
• Lithofacies (Minor): Obsidian

• Distribution (Long axis): ca. 1.1 km
• Distribution (Short axis): ca. 0.6 km
• Distribution (Height): 60 m or higher

• Distribution: Onbasejima islandKozushima 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.)