Tagoegawa Sandstone and Conglomerate Member

[ Top ] [ Japanese ]

Tagoegawa Sandstone and Conglomerate Member Akamine et al., 1956

Type locality: Sakurayama, Zushi city, Kanagawa prefecture
Coherent formation
Late Miocene - Early Pliocene
Correlation: Shimoyamaguchi Sandstone and Conglomerate Member, Senhata Formation

Sedimentary facies: Marine
Sedimentary facies: Rocky beach, Sandy floor with strong currents
Depth of water: upper - middle Sublittoral (Shellfishes
Depth of water: 50 - 200 m (Shellfishes
Lithofacies: Tuffaceous sandstone
Lithofacies (Basal): Conglomerate
Lithofacies (Basal, Minor): Interbedded tuffaceous sandstone and calcareous sandstone, Tuffaceous muddy sandstone

Thickness: 15 - 150 m
Lower limit: Tagoegawa Unconformity (Oyama Formation)

Zushi Formation (North)
[ Upper ]
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Tagoegawa Sandstone and Conglomerate Member
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[ Lower ]

Zushi Formation (Central - South)
[ Upper ]
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Shimoyamaguchi Sandstone and Conglomerate Member
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[ Lower ]

Miura Group (Northern Miura peninsula)
[ Upper ]
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Ikego Formation
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Zushi Formation
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[ Lower ]

Mineoka Belt (Miura peninsula)
[ Upper ]
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Miura Group
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Hayama Group
?--?--?--?--?-
[ Lower ]

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

Distribution: Sakurayama, Zushi city, Kanagawa pref.; Kinugasa - Oyabe, Yokosuka city, Kanagawa pref.
Fossils: Brachiopods (Terebratulina sp.), Solitary corals, Corals
Fossils (Shellfishes): Aequipecten (Cryptopecten) sp., Callista? sp., Dentalium sp., Dosinia sp., Chlamys cf. jausseanmei, Flabellum sp., Glycymeris cf. albolineata, Glycymeris cf. rotunda, Laevicardium sp., Lima (Acesta) goliath, Natica? sp., Nemocardium cf. samarangae, Pecten (Notovola) sp., Umbonium (Suchium) yabei
Tephra: Ok

Takahashi et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.8, pp.375-395, DOI
Eto et al. (1998) Geology of the Yokosuka District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 128p. (in Japanese with English abstract 3p.)