Honzan Vent-filling Deposit

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Honzan Vent-filling Deposit Shikano et al., 2011

One of the sources of Nomuragawa Dacite I or Nomuragawa Dacite II.

Type locality: Summit of Mount Honzan, Oga city, Akita prefecture
Volcanic rocks
early Miocene

Lithofacies: Strongly welded biotite orthopyroxene clinopyroxene volcanic lapilli tuff, Tuff
Lithofacies (Minor): Volcanic breccia, Tuff breccia

Distribution (Diameter): ca. 1 km

Nomuragawa Formation
[ Upper ]
~~~~~~~~~~~~~~
Tateyamazaki Dacite
--------------
Honzan Vent-filling Deposit
--------------
Nomuragawa Dacite II
--------------
Nomuragawa Basalt
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Nomuragawa Dacite I
--------------
Nomuragawa Tuffaceous Conglomerate
~~~~~~~~~~~~~~
[ Lower ]

Oga peninsula
[ Upper ]
?--?--?--?--?-
Onnagawa Formation
--------------
Nishikurosawa Formation
~~~~~~~~~~~~~~
Daijima Formation
~~~~~~~~~~~~~~
Nomuragawa Formation
~~~~~~~~~~~~~~
Monzen Formation
~~~~~~~~~~~~~~
Akashima Formation
?--?--?--?--?-
[ Lower ]

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

Distribution: Mount Honzan - Mount Shinzan, Oga city, Akita pref.

Kano et al. (2011) Geology of the Toga and Funakawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 127p. (in Japanese with English abstract 4p.)