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Shiobara-Otawara Surge Deposit
Abbr. So-OT sg
A part of Shiobara-Shimogo Tephra Group
- Type locality: Sawada, Shimogo city, Minamiaizu county, Fukushima prefecture
- Volcanic rocks
- Eruption products of a collapse caldera which formed Shiobara basin
- Pleistocene
- Lithofacies: Surge deposit
- Lithofacies: Well-sorted tuff
- Sedimentary structures: Parallel stratification
- Source: Shiobara caldera
- Thickness (Sawada): 20 cm
- Takahara volcano
- [ Upper ]
- ?--?--?--?--?-
- Stage 7
- ?--?--?--?--?-
- Stage 6
- ?--?--?--?--?-
- Stage 5
- ?--?--?--?--?-
- Stage 4
- ?--?--?--?--?-
- Stage 3
- ?--?--?--?--?-
- Stage 2
- ?--?--?--?--?-
- Stage 1
- ?--?--?--?--?-
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Sawada, Shimogo city, Minamiaizu county, Fukushima pref.; Katamata, Yaita city, Tochigi pref.
- Yamada et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.837-855 DOI