Maeyama Lava

[ Top ] [ Japanese ]

Maeyama Lava Yamamoto and Komazawa, 2004

Type locality: Lake Numazawa, northeast of the summit of Mount Maeyama, Kaneyama city, Onuma county, Fukushima prefecture
Volcanic rocks
Pleistocene (24 ka)

Sedimentary facies: Lava dome
Lithofacies: Biotite-bearing orthopyroxene clinopyroxene hornblende dacite
Lithofacies: Lava

Thickness: ca. 360 m
Distribution (Diameter): ca. 1.5 km

Numazawa volcano
[ Upper ]
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Numazawako Pyroclastic Deposit / Numazawako Lahar Deposit
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Numagozen Pyroclastic Deposit
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Maeyama Lava
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Sozan Lava
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Mizunuma Pyroclastic Deposit
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Mukurezawa Lava
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Shirifukitoge Pyroclastic Deposit / Nm-SB Tephra
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Lake Numazawa - Mount Maeyama, Numazawa, Kaneyama city, Onuma county, Fukushima pref.

Masubuchi et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.10, pp.533-550, DOI
Masubuchi and Ishizaki (2011) Jour. Geol. Soc. Japan, vol.117, no.6, pp.357-376 DOI
Yamamoto and Komazawa (2004) Geology of the Miyashita District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 71p. (in Japanese with English abstract 5p.)