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Sanbe Ash Fall Deposits Hattori et al., 1983

Invalid name: Sanbe Fall Deposits, Koyahara Ash Fall Deposits, Tsunoi Tephra

• Type locality: Noma, Misato city, Ochi county, Shimane prefecture; Ikeda, Sanbe town, Oda city, Shimane prefecture; Tsunoi, Iinan city, Iishi county, Shimane prefecture
• Tephra
• Pleistocene

• Lithofacies: Volcanic ash
• Lithofacies (Minor): Accretionary lapilli

• Thickness: Several m or thinner
• Upper limit: Unconformity (Uyama Base Surge Deposits)
• Lower limit: Conformity (Sanbe Pyroclastic Flow Deposits)

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

• Distribution: Noma, Misato city, Ochi county, Shimane pref.; Ikeda, Sanbe town, Oda city, Shimane pref.; Tsunoi - Oka, Iinan city, Iishi county, Shimane pref.

• Kano et al. (1998) Geology of the Iwami-Oda and Oura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 118p. (in Japanese with English abstract 5p.)
• Hattori et al. (1983) Geology of the Sambesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 168p. (in Japanese with English abstract 7p.)