Yabashirayama volcanic body

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Yabashirayama volcanic body

Type locality: Nagano prefecture
Volcanic rocks
early Pleistocene (1.1 - 0.9 Ma)

Lithofacies: Basalt, Dacite

Eruptive volume: 42.7 km³
Upper limit: Unconformity (Usonokuchi Gravel Bed)

Yabashirayama volcanic body
[ Upper ]
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Yabashira Volcanic Rocks
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[ Lower ]

Yabashira volcanoes
[ Upper ]
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Kengamine volcanic body
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Byobuiwa volcanic body
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Yabashirayama volcanic body
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Ryugamine volcanic body
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Tokin-no-iwa volcanic body
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[ Lower ]

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

Distribution: Northwest of Mount Yatsugatake, Nagano pref.

Nishiki and Takahashi (2012) Jour. Geol. Soc. Japan, vol.118, no.8, pp.499-515 DOI