Tenguiwa volcano

Volcanic rocks
middle Pleistocene (0.39 Ma, K-Ar)

Lithofacies: Olivine orthopyroxene clinopyroxene andesite
Lithofacies: Lava

Thickness: 5 m or thicker
Lower limit: Unconformity (Nakadaiten-Higashidaiten volcano)

Azuma volcano
[ Upper ]
~~~~~~~~~~~~~~
Jododaira volcano
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Takayama volcano
~~~~~~~~~~~~~~
Higashiazumayama volcano
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Eboshiyama volcano
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Nakaazumayama volcano
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Maedaiten volcano
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Issaikyoyama volcano
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Tenguiwa volcano
~~~~~~~~~~~~~~
Nishidaiten-Nishiazumayama volcano
~~~~~~~~~~~~~~
Nakadaiten-Higashidaiten volcano
~~~~~~~~~~~~~~
Takakurayama volcano
~~~~~~~~~~~~~~
Shionokawa volcano
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Tenguiwa - Bonteniwa, Kitashiobara city, Yama county, Fukushima pref.

Furukawa et al. (2018) Geology of the Azuma Yama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 74p. (in Japanese with English abstract 3p.)