[ Top ] [ Japanese ]
Bs-4 Tephra
Abbr.: Bs-4
- Type locality: Bishamon, Miura city, Kanagawa prefecture
- Tephra
- Pliocene
- Lithofacies: Vitreous volcanic ash
- Sedimentary structures: Graded bedding
- Bs Tephra
- [ Upper ]
- --------------
- Bs-5
- --------------
- Bs-4
- --------------
- Bs-3
- --------------
- Bs-2
- --------------
- Bs-1
- --------------
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Bishamon - Moroiso - Jogashima, Miura city, Kanagawa pref.; Arasaki, Nagai, Yokosuka city, Kanagawa pref.; Kannonhana seashore, Sajima, Yokosuka city, Kanagawa pref.
- 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.)