Fukushi Member

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Fukushi Member Matsuda, 1961

Type locality: Fukushi, Nanbu city, Minamikoma county, Yamanashi prefecture
Volcanic rocks
late Miocene
Correlation: upper Hakii Interbeds of Sandstone and Mudstone Member, upper Utsubuna Member

Sedimentary facies: Marine
Lithofacies: Dacite tuff, Mudstone-dominant interbedded sandstone and mudstone

Thickness: ca. 150 m
Lower limit: Bottom of the dacite tuff bed
Lower limit: Conformity (Machiya Member)

Manzawa Formation
[ Upper ]
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Fukushi Member
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Machiya Member
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Manzawa Member
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Toshima Member
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[ Lower ]

Fujikawa Group (Eastern zone)
[ Upper ]
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Manzawa Formation
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[ Lower ]

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

Distribution: Fukushi - Majino - Taira, Nanbu city, Minamikoma county, Yamanashi pref.
Fossils: Sponges (Sagarites sp.), Foraminifera

Ozaki and Sugiyama (2018) Geology of the Minobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 169p. (in Japanese with English abstract 7p.)
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.)