Okiura caldera

[ Top ] [ Japanese ]

Okiura caldera Muraoka and Hase, 1981

Type locality: Aomori prefecture
Piecemeal type Valles type caldera volcano
Volcanic rocks
early Pleistocene

Distribution (Diameter): ca. 15 - 17 km

Okiura caldera
[ Upper ]
~~~~~~~~~~~~~~
Oguni Lacustrine Formation
~~~~~~~~~~~~~~
Okiura Dacite
~~~~~~~~~~~~~~
Aoni Tuff
--------------
[ Lower ]

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

Distribution: 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.)
Muraoka and Hase (1990) Geology of the Kuroishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 124p. (in Japanese with English abstract 8p.)