Komoro Welded Tuff

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Komoro Welded Tuff

Tephra
Basal bed of Komoro Formation
Pliocene - Pleistocene

Lithofacies: Hornblende augite-bearing hypersthene dacite welded tuff

Okui Formation
[ Upper ]
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Main part
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Komoro Welded Tuff
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[ Lower ]

Komoro Group
[ Upper ]
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Uryuzaka Formation
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Nunobiki Formation
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Okui Formation
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Nashidaira Formation
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[ Lower ]

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

Distribution: Higashizawa - Kuriya river, Komoro city, Nagano pref.; Kamimaruko - Togo bridge, Ueda city, Nagano pref.

Kawachi and Aramaki (1979) Geology of the Komoro District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 39p. (in Japanese with English abstract 2p.)