Ichiibara Formation

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Ichiibara Formation

Volcanic rocks
Late Cretaceous

Lithofacies: Rhyolite welded tuff

Ochi Group
[ Upper ]
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Yadani Formation
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Ichiibara Formation
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[ Lower ]

Mochigase stage volcanic rocks
?--?--?--?--?-
Hikimi Group
?--?--?--?--?-
Abu Group
?--?--?--?--?-
Ochi Group
?--?--?--?--?-
Yakumo Volcanic Rocks
?--?--?--?--?-

Sanin Belt
[ Young ]
~~~~~~~~~~~~~~
Tamagawa stage volcanic rocks
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Younger Inbi stage intrusive rocks
?--?--?--?--?-
Older Inbi stage intrusiv rocks
?--?--?--?--?-
Inbi stage volcanic rocks
~~~~~~~~~~~~~~
Mochigase stage intrusive rocks
?--?--?--?--?-
Mochigase stage volcanic rocks
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[ Old ]

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

Distribution: 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.)