Hokiyadake Volcanics

Hokiyadake Volcanics (Ota and Katata, 1955) (Photo)

Invalid synonym: Hokiya Lava, Hokiya Volcanic Rocks

Type locality: Mount Hokiyadake, Nagano city, Nagano prefecture
Volcanic rocks
Pliocene

Lithofacies: Olivine basalt, Pyroxene andesite lava
Lithofacies (Minor): Tuff breccia

Upper limit: Unconformity (Takimoto Formation, Kimyosan Volcanics)
Lower limit: Unconformity (Makiuchi Andesite)

Nagano, Nagano pref.
[ Upper ]
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Kimyosan Volcanics
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Hokiyadake Volcanics
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Makiuchi Andesite
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Mount Hokiyadake, Nagano city, Nagano pref.; Takimoto, Matsushiro town, Nagano city, Nagano pref.

Kato and Akahane (1986) Geology of the Nagano District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 120p. (in Japanese with English abstract 5p.)
Ota and Katada (1955) Suzaka, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 6p.)