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Harada Formation Watabe et al., 1952
- Sedimentary facies: Marine, Products of submarine volcanoes
- Lithofacies: Sandstone
- Thickness: ca. 125 m
- Upper limit: Local unconformity
- Lower limit: Transitional (Itami Formation), Unconformity (Dacite)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shirahama seashore - Itato seashore, Shimoda city, Shizuoka pref.
- Fossils: Shellfishes
- Kano and Ito (2016) Jour. Geol. Soc. Japan, vol.122, no.8, pp.413-432, DOI
- Sawamura et al. (1970) Geology of the Shimoda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 41p. (in Japanese with English abstract 4p.)