Yasudagawa Formation

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Yasudagawa Formation Yoshikawa et al., 2005

Type locality: Yasudagawa river, Yasuda, Taka city, Taka county, Hyogo prefecture
Volcanic rocks
Late Cretaceous

Lithofacies (Upper): Dacite - Rhyolite tuff, Lapilli tuff
Lithofacies (Upper, Minor): Tuffaceous sandstone, Mudstone, Breccia
Lithofacies (Lower): Pyroxene rhyolite welded lapilli tuff

Thickness: 280 m or thicker
Lower limit: Unconformity (Kochi Complex, Myokenzan Formation, Kamogawa Formation)

(Invalid name) Ikuno Group (Ikuno, Hyogo pref.)
[ Upper ]
~~~~~~~~~~~~~~
Mineyama Formation
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Kasagatayama Formation
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Nagusayama Formation
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Sasagamine Formation
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Yasudagawa Formation
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Myokenzan Formation
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Kamogawa Formation
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Ikuno Formation
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Tochihara Formation
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Okawachi Formation
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[ Lower ]

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

Distribution: Yasuda - Makino - Kadota - Mount Takedanisan - Mount Asakayam, Taka city, Taka county, Hyogo pref.; Ishihara - Mount Ishikaneyama, Kurodasho town, Nishiwaki city, Hyogo pref.

Yoshikawa et al. (2005) Geology of the Ikuno District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 48p. (in Japanese with English abstract 3p.)