[ Top ] [ Japanese ]
Sayama Formation
- Type locality: Sayama city, Saitama prefecture
- Coherent formation
- early Pleistocene
- Sedimentary facies: Freshwater, Marine
- Sedimentary facies: Inland bay
- Depth of water: Mudflat, Intertidal, Lower intertidal
- Thickness: 95 m
- Upper limit: Unconformity
- Lower limit: Unknown
- Sayama hills
- [ Upper ]
- ~~~~~~~~~~~~~~
- Imokubo Formation
- ~~~~~~~~~~~~~~
- Sayama Formation
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Sayama hills, Saitama pref.; Sanpoiri Tokorozawa city, Saitama pref.
- Tephra: Imokubo Tephra, Zoshiki Tephra, Sayama-Gomashio Tephra (SGO, Ob4b-1, 1.63 Ma), Sayama-Glassy Tephra (SYG, 1.71 - 1.76 Ma), Hakonegasaki Tephra Group
- Suzuki et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.7, pp.343-356, DOI
- 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.)