Chojayashiki Dacite

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Chojayashiki Dacite Ozawa et al., 1977

Type locality: Chojayashiki, Fukuyama, Yurihonjo city, Akita prefecture
Volcanic rocks
Pliocene
Correlation: Haguroyama Dacite

Lithofacies: Biotite hornblende dacite lava

Thickness: 0 - 50 m or thicker

Tentokuji Formation (Honjo, Akita pref.)
[ Upper ]
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Fukuyama Andesite / Chojayashiki Dacite
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[ Lower ]

Oga peninsula - Dewa hills, Akita pref.
[ Upper ]
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Sasaoka Formation
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Tentokuji Formation
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Funakawa Formation
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[ Lower ]

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

Distribution: Chojayashiki, Fukuyama, Yurihonjo city, Akita pref.

Ozawa et al. (1977) Geology of the Honjo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 4p.)