Metoki Coquina Conglomerate Member

Metoki Coquina Conglomerate Member (Chinzei, 1958) Tuzino et al., 2018

Invalid synonym: Metoki Shell-Limestone

Type locality: Metoki station, Sannohe city, Sannohe county, Aomori prefecture
Type locality (Sub): Mabechi river, Taki, Sannohe city, Sannohe county, Aomori prefecture
Coherent formation
middle Miocene (14 - 12 Ma)

Sedimentary facies: Shallow marine
Climate: Tropical - Subtropical
Lithofacies: Sandstone, Conglomerate, Coquina (Bioclastic fragments)
Sedimentary structures: Planar cross-stratification
Paleocurrent: Northwest

Thickness: 10 - 150 m
Upper limit: Unconformity (Toya Formation)

Zyumonzi Formation
[ Upper ]
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Shimotomai Volcaniclastic Rock Member
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Metoki Coquina Conglomerate Member
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Hinosawa Conglomerate Member
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[ Lower ]

Sannohe Group
[ Upper ]
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Kubo Formation
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Shitazaki Formation
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Yanagisawa Formation
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Zyumonzi Formation
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[ Lower ]

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

Distribution: Metoki - Shiroyama, Sannohe city, Sannohe county, Aomori pref.; Mabechi river, Taki, Sannohe city, Sannohe county, Aomori pref.; Kawaguchi - Kintaichi - Hinosawa - Ishikiridokoro, Ninohe city, Iwate pref.; Sotokawame, Karumai city, Kunohe county, Iwate pref.
Fossils: Bernacles, family Pectinidae, Brachiopods, Calcareous algae, Bryozoans, Foraminifera
Fossils (Calcareous nannofossils): Cyclicargolithus floridanus, Denticulopsis simonsenii (corrected from Denticulopsis hustedtii)

Tuzino et al. (2018) Geology of the Ichinohe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 161p. (in Japanese with English abstract 4p.)