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Gobanshoyama Formation Noda and Masuda, 1968

• Coherent formation
• Pliocene

• Sedimentary facies: Marine
• Lithofacies: Sandstone, Sandy siltstone

• Thickness: ca. 2 m
• Lower limit: Unconformity (Domeki Sandstone Member)

• Distribution: Ayukawahama, Ishinomaki city, Miyagi pref.
• Fossils (Shellfishes): Anadara tatunokutiensis, Anomia sp., Buccinum ochotense, Callithaca (Protocallithaca) cf. adamsi, Clinocardium hataii, Cryptomya busoensis, Ezocallista brevisiphonata, Fortipecten takahasii, Glycymeris gorokuensis, Haliotis sp., Macoma sp., Saxidomus purpuratus, Serpuloribs sp.

• Takizawa et al. (1974) Geology of the Kinkasan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 62p. (in Japanese with English abstract 5p.)