Kita-Hakkoda volcanoes

Type locality: Aomori prefecture
Post-caldera volcanoes
Volcanic rocks
Pleistocene

Lithofacies (Early stage): Tholeiite series
Lithofacies (Late stage): Calc-alkaline series

Eruptive volume: ca. 15 km³

Kita-Hakkoda volcanoes
[ Upper ]
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Odake Lava / Odake Pyroclastic Rocks
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Idodake Lava / Idodake Pyroclastic Rocks
'''''''/,,,,,,
Akakuradake Lava / Akakuradake Pyroclastic Rocks
~~~~~~~~~~~~~~
Kodake Lava
~~~~~~~~~~~~~~
Iodake Lava
~~~~~~~~~~~~~~
Sennintai Lava and Pyroclastic Rocks
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Tamoyachidake Lava
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Takadaotake Lava and Pyroclastic Rocks
~~~~~~~~~~~~~~
Hinadake Lava and Pyroclastic Rocks
~~~~~~~~~~~~~~
Tashirotai Lacustrine Formation
~~~~~~~~~~~~~~
[ Lower ]

Hakkoda caldera
[ Upper ]
~~~~~~~~~~~~~~
Kita-Hakkoda volcanoes
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Minami-Hakkoda volcanoes
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[ Lower ]

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

Distribution: Mount Tamoyachi, Narusawa plateau, Mount Akakura, Mount Ido, Mount Odake, Mount Sennintai, Mount Io, Mount Takadaotake, Mount Hina, Aomori pref.

Takarada and Muraoka (2004) Geology of the Hakkoda San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 86p. (in Japanese with English abstract 4p.)