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Izusan Dacite (Kuno, 1952) Oikawa and Ishizuka, 2011

One of the oldest description of Japanese rocks (Kuno, 1884)

• Type locality: Izusan, Atami city, Shizuoka prefecture
• Volcanic rocks
Monogenetic volcano
• Pleistocene (younger than 0.3 Ma; 0.1 Ma, FT)

• Lithofacies: Orthopyroxene hornblende-bearing clinopyroxene dacite lava

• Upper limit: Unconformity (Yugaara volcano)
• Lower limit: Unconformity (Atami volcano)

• Distribution: Izusan, Atami city, Shizuoka pref.

• Oikawa and Ishizuka (2011) Geology of the Atami District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 61p. (in Japanese with English abstract 3p.)