Middle Ogane Shell Bed

Abbr. OGM

Coherent formation
Miocene

Sedimentary facies: Marine
Lithofacies: Lower part of the middle sandy mudstone bed

Ogane Formation (Nasukarasuyama - Ichikai, Tochigi pref.)
[ Upper ]
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Upper member
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Middle member
Upper Ogane Shell Bed
Middle Ogane Shell Bed
Lower Ogane Shell Bed
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Lower member
Takase Shale Member
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[ Lower ]

Arakawa Group
[ Upper ]
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Irieno Formation
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Tanokura Formation
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Ogane Formation
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Kobana Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Shiota, Ichikai city, Haga county, Tochigi pref.; Magatta - Takase - Junikuchi - Kumada, Nasukarasuyama city, Tochigi pref.
Fossils (Middle, Shiobara-Yama fauna): Aradara ninohensis, Phos iwakianus, Serripes groenlandicus, Neptunea koromogawana, Buccinum sp., Cultellus izumoensis, Lucinoma acutilineata, Macoma optiva, Mya cuneiformis, Panomya simotomensis, Dosinia cf. kaneharai, Mercenaria cf. yokoyamai, Glycymeris, Lucinoma acutilineata, Clinocardium sp., Anadara ninohensis, Macoma optiva, Mya cuneiformis, Acila divaricata, Cultellus izumoensis, Phos iwakianus, Dosinia cf. kaneharai, Mercenaria cf. yokoyamai, Glycymeris sp.

Matsui et al. (2011) Jour. Geol. Soc. Japan, vol.117, Supplement, pp.89-102 DOI