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S2
- Accretionary complex
- middle - late Eocene
- Sedimentary facies: Marine
- Lithofacies: Sandstone
- Lithofacies (Minor): Sandstone-dominant interbedded sandstone and mudstone, Conglomerate, Gravel-bearing mudstone
- Sedimentary structures: Sole marks
- Thickness: ca. 200 - 400 m
- Paleocurrent: from Northwest, from Southeast
- Paleocurrent (Minor): from Northeast, from Southeast
- Shimotsuyu Formation
- [ Upper ]
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- S6
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- S5
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- S4
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- S3
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- S2
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- S1
- /--/--/--/--/-
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kozagawa river - Soinogawa river - Fukuidani valley, Kozagawa city, Higashimuro county, Wakayama pref.; Samoto - Tazudaira, Susami city, Nishimuro county, Wakayama pref.; Yokoshima island - Soshima island, Kushimoto city, Higashimuro county, Wakayama pref.
- Tateishi et al. (1979) Geology of the Esumi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 65p. (in Japanese with English abstract 6p.)