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Sashimi Formation (Mii, 1966) Kano et al., 1998

Invalid synonym: Kawamukai Formation

• Type locality: Sashimi seashore, Koryo town, Izumo city, Shimane prefecture
• Coherent formation
• Pleistocene (Last Glacial Period)
• Correlation: Yumigahama Sandbar, Yasugi Formation

• Sedimentary facies: Marine, Brackish
• Sedimentary facies (Top): Coastal deposits, Sand dune deposits
• Lithofacies (Top): Sands
• Lithofacies (Upper): Silty clay
• Lithofacies (Upper, Minor): Sands, Peat
• Lithofacies (Middle): Sands
• Lithofacies (Middle, Minor): Mud
• Lithofacies (Lower): Gravels
• Sedimentary structures (Top): Planar cross-stratification, Wavy cross-stratification, Dune cross-stratification, Parallel stratification

• Thickness: 50 - 80 m
• Thickness (Lower): 1 - 10 m
• Upper limit: Unconformity (Nakaumi Formation, Taisha Sand Dune, Hamayama Sand Dune)
• Lower limit: Unconformity

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Sashimi seashore, Koryo town, Izumo city, Shimane pref.; Kandogawa river - Taisha bay, Izumo city, Shimane pref.
• Fossils: Ostrea sp.
• Tephra: DMP, SK

• Kano et al. (1998) Geology of the Taisha District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 58p. (in Japanese with English abstract 3p.)
• Kano et al. (1994) Geology of the Matsue District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 126p. (in Japanese with English abstract 5p.)
• Kano et al. (1991) Geology of the Imaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 5p.)