Shionokawa volcano

Volcanic rocks
early Pleistocene (1,18, 1.0 Ma, K-Ar)

Sedimentary facies: Land slide deposit
Lithofacies: Olivine-bearing orthopyroxene clinopyroxene andesite, Orthopyroxene clinopyroxene olivine andesite
Lithofacies: Lava

Thickness (Lava, A unit): 30 m in maximum
Upper limit: Unconformity (Machiniwasaka Debris Avalanche Deposit, Takakurayama volcano, Issaikyoyama volcano, Jododaira volcano, Takayama volcano)

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

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

Distribution: Lake Onna - Lake Otoko, Tsuchiyuonsen town, Fukushima city, 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.)