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Deguchi Sandstone and Mudstone Member (Matsuda and Mizuno, 1955) Ozaki and Sugiyama, 2018
- Type locality: Deguchi, Tokiwa, Minobu city, Minamikoma county, Yamanashi prefecture
- Coherent formation
- middle Miocene
- Sedimentary facies: Marine
- Sedimentary facies: Volcanic products, Deep sea sediments
- Depth of water: Abbyssal (shallower than CCD)
- Lithofacies: Interbedded tuffaceous sandstone and mudstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Deguchi, Tokiwa - Isshiki - Miyaki - Shimotanbara - Kamogaritsumugi - Kiriishi - Teuchizawa, Minobu city, Minamikoma county, Yamanashi pref.
- Ozaki and Sugiyama (2018) Geology of the Minobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 169p. (in Japanese with English abstract 7p.)