H6 Dacite Member

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H6 Dacite Member

Invalid synonym: lower Haigamine Formation

Type locality: Mount Haigamine - Nikyukyo valley, Kure city, Hiroshima prefecture
Volcanic rocks
Late Cretaceous

Lithofacies: Dacite welded crystalline tuff
Lithofacies (Minor): Rhyolite welded tuff
Structures: Eutaxitic structure

Thickness: 600 - 1,000 m
Distribution (East - West): ca. 31 km
Upper limit: Conformity (H7 Rhyolite Member)
Lower limit: Conformity (H5 Rhyolite 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 ]
~~~~~~~~~~~~~~
Norosan Welded Tuff
~~~~~~~~~~~~~~
Haigamine Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Yasuura town, Kure city, Hiroshima pref.; Yoshina town, Takehara city, Hiroshima pref.; Osakikamijima island - Ikunoshima island - Usujima island - Chigirishima island - Sagumijima island, Osakikamijima city, Toyota county, Hiroshima pref.; Akitsu, Higashihiroshima city, 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.)
Higashimoto et al. (1985) Geology of the Kure District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 6p.)