Sakurano Member

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Sakurano Member

Probably this should be redefined to Member of Hamaishidake Formation

Coherent formation
Trough basin (Fujikawa Trough) -fill deposit at the collision boundary between Izu-Bonin-Mariana arc and Southwest - East Japan island arc
Back-arc basin volcanic activity at the back-arc basin of Izu-Bonin-Mariana arc
late Miocene - Pliocene

Sedimentary facies: Marine
Lithofacies: Conglomerate

Utsugino Formation (West)
[ Upper ]
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Hirayama Member
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[ Lower ]

Utsugino Formation (East)
[ Upper ]
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Sakurano Member
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Yamauchi Member
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[ Lower ]

Hamaishidake Formation (West)
[ Upper ]
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Okuyama Member / Kawaino Member
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[ Lower ]

Hamaishidake Formation (East)
[ Upper ]
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Ishiai Member
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Kangatake Member
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[ Lower ]

(Invalid name) Hamaishidake Group
[ Upper ]
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Kawaino Formation
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Nakagochi Formation
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Utsugino Formation
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Sattatoge Formation / Murono Formation
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Kogochi Formation
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[ Lower ]

Fujikawa Group (Central zone)
[ Upper ]
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Hamaishidake Formation / Akebono Formation
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Aimata Formation
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Kuonji Formation
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Hara Formation
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[ Lower ]

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

Distribution: Shizuoka pref.
Fossils (Foraminifera): Globigerina bulloides, Globigerina decoraperla, Globigerina falconensis, Globigerinoides immoturus, Globigerinoides obliquus obliquus, Globigerinoides ruber, Globigerinoides sacculifer, Globigerinoides trilobus, Globorotalia crassaformis, Globorotalia inflata, Globorotalia menardii, Globorotalia obesa, Globorotalia scitula, Globorotalia tosaensis, Globorotalia tumida tumida, Neogloboquadrina acostaensis, Orbulina universa, Sphaeroidinella dehiscens

Sugiyama and Shimokawa (1990) Geology of the Shimizu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 8p.)