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Nihondake Formation Ome City, 1995

Invalid synonym: Kobuichi Formation

• Type locality: Nariki, Ome city, Tokyo
• Coherent formation
• late Pliocene
• Correlation: Hanno Formation

• Sedimentary facies: Fluvial
• Lithofacies: Gravels
• Sedimentary structures: Channel structure

• Thickness: ca. 5 - 60 m
• Lower limit: Unconformity (Nitayama Unit, Narikigawa Formation)

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

• Distribution: Nariki, Ome city, Tokyo; Shimonaotake, Hanno city, Saitama pref.

• Ueki and Sakai (2007) Geology of the Ome District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 189p. (in Japanese with English abstract 5p.)