Shiraiwa Sandstone Mudstone Member

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Shiraiwa Sandstone Mudstone Member Kawamura et al., 2013

Type locality: Uchikawame forest road, Shiraiwa, Ohasama town, Hanamaki city, Iwate prefecture
Coherent formation
Paleozoic volcanic island arc
Devonian (Plants)

Lithofacies: Sandstone, Interbedded sandstone and mudstone, Mudstone, Siliceous tuff
Lithofacies (Minor): Conglomerate
Sedimentary structures: Parallel stratification, Low angle cross-stratification

Thickness: 700 m or thicker

Orikabetoge Formation
[ Upper ]
?--?--?--?--?-
Shiraiwa Sandstone Mudstone Member
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Ochiai Sandstone Conglomerate Member
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[ Lower ]

South Kitakami Belt (Osako, Iwate pref.)
[ Upper ]
?--?--?--?--?-
Uchikawame Formation
?--?--?--?--?-
Funakubo Formation / Odagoe Formation
?--?--?--?--?-
Orikabetoge Formation
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Nameirizawa Formation
::::::::::::::
Hayachine Complex
?--?--?--?--?-
[ Lower ]

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

Distribution: Uchikawame forest road, Shiraiwa - Nabeyashiki - Toya, Ohasama town, Hanamaki city, Iwate pref.
Fossils: Terrestrial plants

Kawamura et al. (2013) Geology of the Hayachine San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)