Shiroyama Lava

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Shiroyama Lava

Volcanic rocks
middle Pleistocene

Lithofacies: Two-pyroxene andesite lava

Thickness: A few dozen m
Lower limit: Unconformity (Tuff breccia)

Older volcano (Somma)
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Yahazugasen Lava
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Katsutagasen Lava
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Senjosan Lava
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Shiroyama Lava
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Yoshiwara Lava
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Daisen volcano
[ Upper ]
+__+__+__+__+_
Younger volcano
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Older volcano
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[ Lower ]

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

Distribution: Mount Karasugasen, Kotoura city, Tohaku county, Tottori pref.; Mitsukue, Kofu city, Hino county, Tottori pref.

Ota (1962) Akasaki & Daisen, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 37p. (in Japanese with English abstract 3p.)