H5 Rhyolite Member

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H5 Rhyolite Member

Type locality: Sotoomote - Mebarusaki, Osakikamijima city, Toyota county, Hiroshima prefecture
Type locality (Rhyolite lava): Mount Kannomineyama, Osakikamijima city, Toyota county, Hiroshima prefecture
Volcanic rocks
Late Cretaceous
Correlation: Tado Volcanic Member

Lithofacies: Rhyolite welded vitreous crystalline tuff
Lithofacies (Minor): Dacite welded tuff, Rhyolite lava

Thickness: ca. 300 m
Upper limit: Conformity (H6 Dacite)
Lower limit: Conformity (H4 Dacite Member)

Haigamine Formation
[ Upper ]
~~~~~~~~~~~~~~
H8 Dacite Member
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H7 Rhyolite Member
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H6 Dacite Member
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H5 Rhyolite Member
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H4 Dacite Member
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H3 Andesite Member
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H2 Rhyolite Member
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H1 Breccia Member
~~~~~~~~~~~~~~
[ Lower ]

Takada Rhyolites (Kure, Hiroshima pref.)
[ Upper ]
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Norosan Welded Tuff
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Haigamine Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Kamigumi - Mount Kannominesan - Tenma, Osakikamijima city, Toyota county, Hiroshima pref.

Matsuura (2001) Geology of the Mitsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 58p. (in Japanese with English abstract 4p.)