Komatsuji Formation

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Komatsuji Formation

Volcanic rocks
Oligocene (23 - 18 Ma, FT; 18.9 Ma, K-Ar)

Lithofacies: Dacite pyroclastic flow deposit

Tamagawa stage volcanic rocks (Shimane pref.)
[ Young ]
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Sakurae Group
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Kotani Formation
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Kawamoto Granodiorite
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Komatsuji Formation
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Toburodani Formation
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[ Old ]

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

------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Shimane pref.

Kano (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.781-803 DOI
Kano et al. (1998) Geology of the Iwami-Oda and Oura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 118p. (in Japanese with English abstract 5p.)