Shikada Tuff Member

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Shikada Tuff Member

Volcanic rocks
Miocene

Sedimentary facies: Marine
Lithofacies: Interbedded siltstone and tuff
Sedimentary structures: Graded bedding, Parallel stratification, Convolute lamination

Muraoka Formation
[ Upper ]
?--?--?--?--?-
Myoken Tuff Breccia Member
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Yubunegawa Black Shale Member
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Shikada Tuff Member
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[ Lower ]

Hokutan Group (northern Hyogo pref.)
[ Upper ]
?--?--?--?--?-
Muraoka Formation
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Toyooka Formation
~~~~~~~~~~~~~~
Yoka Formation
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Takayanagi Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Mount Sobu, Muraoka-ku, Kami city, Mikata county, Hyogo pref.
Fossils (Trace fossils): Thalassinoides isp., Phycosiphon incertum

Haji and Yamaji (2019) Jour. Geol. Soc. Japan, vol.125, no.9, pp.685-698 DOI