Omorozawa Member

[ Top ] [ Japanese ]

Omorozawa Member Sugiyama and Matsuda, 2014

Type locality: Omorozawa creek, Nanbu city, Minamikoma county, Yamanashi prefecture
Coherent formation
late Miocene - Pliocene
Correlation: lower Yagisawa Mudstone Member, Utsubuna Member
Intruded by: Andesite

Sedimentary facies: Marine
Lithofacies: Sandstone-dominant interbedded sandstone and mudstone
Lithofacies (Minor): Sandstone, Conglomerate

Thickness: ca. 15 - 20 m

Minobu Formation (Southwest)
[ Upper ]
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Seigo Volcaniclastic Member
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Hakii Interbeds of Sandstone and Mudstone Member
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Marutaki Conglomerate Member
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Omorozawa Member
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[ Lower ]

Fujikawa Group (Eastern zone)
[ Upper ]
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Akebono Formation
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Minobu Formation
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Shimobe Formation
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[ Lower ]

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

Distribution: Omorozawa creek - Matobazawa creek - Nishinorigawa river, Nanbu city, Minamikoma county, Yamanashi pref.; Nagatogawa river, Minobu city, Minamikoma county, Yamanashi pref.

Sugiyama and Matsuda (2014) Geology of the Nanbu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 134p. (in Japanese with English abstract 5p.)