Maego Lava

Maego Lava Ozawa and Sumi, 1958

Type locality: Maego creek, Tazawako, Senboku city, Akita prefecture
Volcanic rocks
Stratovolcano
Pleistocene (1.7 Ma, K-Ar)

Lithofacies: Hypersthene augite-bearing andesite, Hypersthene augite andesite
Lithofacies: Lava (6 flow units)
Lithofacies (Minor): Tuff breccia, Tuff

Pre-caldera stratovolcano
[ Upper ]
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Maego Lava
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Okuro Lava
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Kowase Altered Andesite
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[ Lower ]

Pre-caldera stratovolcano
[ Upper ]
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Akazawa Lava
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[ Lower ]

Kayodake volcano
[ Upper ]
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Post-caldera lava
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Parasitic cone
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Pre-caldera stratovolcano
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[ Lower ]

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

Distribution: Maego creek, Tazawako, Senboku city, Akita pref.; Sendachi river, Shizukuishi city, Iwate county, Iwate pref.

Suto and Ishii (1987) Geology of the Shizukuishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 142p. (in Japanese with English abstract 5p.)
Kawano and Uemura (1964) Hachimantai, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 36p. (in Japanese with English abstract 8p.)
Ozawa and Sumi (1958) Tazawako, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 23p. (in Japanese with English abstract 4p.)