Karakuri Dacite

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Karakuri Dacite Sawada, 1978

Type locality: Karakuri, Kakeya town, Unnan city, Shimane prefecture
Volcanic rocks
middle Miocene (18.4 Ma, FT)
Intruded by: Hornblende augite porphyry dikes

Lithofacies: Dacite welded tuff, Lapilli tuff, Tuff breccia
Lithofacies (Minor): Pyroxene andesite lava, Hyaloclastite, Lapiili tuff, Volcanic breccia, Dacite lava, Acidic tuff

Thickness: 450 m
Upper limit: Unconformity (Omori Formation)
Lower limit: Transitional (Teradani Andesite), Unconformity (Nari Clastic Rocks, Hakami Volcanic Rocks, Matsukasa Volcanic Rocks)

Kawai Formation (Hata, Shimane pref.)
[ Upper ]
~~~~~~~~~~~~~~
Karakuri Dacite
--------------
Teradani Andesite
~~~~~~~~~~~~~~
[ Lower ]

southern Izumo, Shimane pref.
[ Upper ]
--------------
Jinzai Formation
--------------
Hikawa Formation
--------------
Fujina Formation
-------~~~~~~~
Omori Formation
~~~~~~~~~~~~~~
Kuri Formation
'''''''/,,,,,,
Kawai Formation
~~~~~~~~~~~~~~
Hata Formation
~~~~~~~~~~~~~~
Sada Formation
--------------
[ Lower ]

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

Distribution: Karakuri - Hata, Kakeya town, Unnan city, Shimane pref.

Kano et al. (2001) Geology of the Yunotsu and Gotsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 129p. (in Japanese with English abstract 5p.)
Hattori et al. (1983) Geology of the Sambesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 168p. (in Japanese with English abstract 7p.)