Akakuzureyama Lava

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Akakuzureyama Lava (Kitamura, 1979)

Invalid synonym: Akakuzureyama Andesite

Type locality: Mount Akakuzure, Taiwa city, Kurokawa county, Miyagi prefecture
Volcanic rocks
Caldera volcano
early Pleistocene (1.59 Ma)

Lithofacies (Upper): Olivine-bearing pyroxene andesite lava
Lithofacies (Lower): Olivine-bearing pyroxene andesite tuff breccia, Lapilli tuff, Volcanic breccia
Lithofacies (Lower, Minor): Tuffaceous sandstone, Siltstone

Thickness: 150 - 250 m
Upper limit: Unconformity (Arakawa Pyroclastic Rocks)
Lower limit: Unconformity (Wakahata Formation, Miyatoko Tuff Member)

Nanatsumori volcano
[ Upper ]
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Ohatayama Pyroclastic Rocks
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Akakuzureyama Lava / Ohatayama Lavas / Kamikadajin Lava
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Nanatsumori Lava
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Wakahata Formation
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Miyatoko Tuff Member
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[ Lower ]

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

Distribution: Mount Akakuzure - Mount Ohata, Taiwa city, Kurokawa county, Miyagi pref.

Miyamoto et al. (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.27-46 DOI
Kitamura et al. (1983) Geology of the Yoshioka District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 50p. (in Japanese with English abstract 5p.)