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Zao volcano

• Type locality: Miyagi prefecture - Yamagata prefecture
• Volcanic rocks
• Middle Pleistocene - Present (0.8 - 0.0 Ma)

• Sedimentary facies (0.8-0.6 Ma): Submarine
• Lithofacies (0.8-0.6 Ma): Tholeiite
• Lithofacies (0.8-0.6 Ma): Basalt

• Sedimentary facies (0.4-0.3 Ma): Terrestrial
• Lithofacies (0.4-0.3 Ma): Calc-alkaline
• Lithofacies (0.4-0.3 Ma): Dacite, Andesite
• Lithofacies (0.4-0.3 Ma): Lava, Pyroclastic rocks

• Sedimentary facies (0.3-0.1 Ma): Terrestrial
• Lithofacies (0.3-0.1 Ma): Calc-alkaline
• Lithofacies (0.3-0.1 Ma): Dacite, Andesite
• Lithofacies (0.3-0.1 Ma): Lava, Pyroclastic rocks

• Sedimentary facies (30-0 ka): Terrestrial
• Lithofacies (30-0 ka): Calc-alkaline
• Lithofacies (30-0 ka): Basaltic andesite
• Lithofacies (30-0 Ma): Agglomerate, Scoria

• Source (30-0 ka): Okama crator, Mount Goshiki
• Mode of eruption (0.3-0.1 Ma): Vulcanian
• Eruptive volume (Overall): 25 km³
• Eruptive volume (30-0 ka): 2 km³

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Miyagi pref. - Yamagata pref.
• Distribution (0.8-0.6 Ma): Maruyamazawa creek, Miyagi pref.
• Distribution (0.4-0.3 Ma): Mount Nakamaru
• Distribution (0.3-0.1 Ma): Mount Kumano - Mount Katta, Miyagi pref.
• Distribution (30-01 ka): Umanose, Miyagi pref.

• Ban (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.120-133 DOI