Niigata-Yakeyama volcano

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Niigata-Yakeyama volcano Yamazaki, 1896

Type locality: Itoigawa city - Myoko city, Niigata prefecture
Volcanic rocks
Holocene (ca. 3 - 0 ka)

Lithofacies (Upper): Andesite - Dacite lava
Lithofacies (Lower): Pyroclastic flow deposit, Debris flow deposit, Pyroclastic fall deposit

Mode of eruption: Phreatic

Niigata-Yakeyama volcano
[ Upper ]
~~~~~~~~~~~~~~
Hayakawa Pyroclastic Flow Deposit
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Maekawa Debris Flow Deposit
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[ Lower ]

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

Distribution: Itoigawa city - Myoko city, Niigata pref.

Nagamori et al. (2018) Geology of the Itoigawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 75p. (in Japanese with English abstract 3p.)