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Wakago volcano Isshiki, 1987

• Type locality: Wakago, Niijima island, Niijima city, Tokyo
• Volcanic rocks
• Monogenetic volcano
• Holocene (ca. 2,500 years ago)

• Sedimentary facies: Pyroclastic surge deposit
• Lithofacies: Olivine basalt pyroclastic deposits
• Lithofacies (Minor): Accretionary lapilli
• Sedimentary structures: Cross stratification, Bomb sag structure

• Thickness: ca. 3 - 60 m
• Upper limit: Unconformity (Acchiyama volcano)
• Lower limit: Unconformity (Niijimayama volcano)

• Distribution: Wakago - summit of Mount Niijimayama - summit of Mount Jinakayama - Mount Miyatsukayama - Akazakinomine - Mount Minejiyama, Niijima island, 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.)