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Jinaijima volcano Isshiki, 1987

• Type locality: Jinaijima island, Niijima city, Tokyo
• Volcanic rocks
• Monogenetic volcano
• Pleistocene
• Correlation (Upper, 11th bed): Shimawakezawa Volcaniclastic Deposits

• Sedimentary facies: Lava dome
• Lithofacies (Upper): Ryolite - Andesite volcaniclastic deposits (16 units)
• Lithofacies (Lower): Hypersthene cummingtonite hornblende rhyolite
• Sedimentary structures (Upper): Parallel stratification, Cross stratification

• Distribution (Length): 1.4 km
• Distribution (Width): 0.6 km
• Thickness (Upper): 21.82 m
• Thickness (Lower, above sea level): ca. 50 m

• Distribution: Jinaijima island - Ohirashima island - Nadarane - Natsuhada, Niijima city, Tokyo

• Isshiki (1987) Geology of the Nii Jima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 3p.)