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Shirashimazaki Basalt Yamauchi et al., 2005

• Volcanic rocks
• Pliocene (2.81 Ma, K-Ar)

• Lithofacies: Trachybasalt lava
• Lithofacies (Lower): Pyroclastic rocks
• Lithofacies (Lower, Minor): Base surge deposits

• Thickness: ca. 10 m or thicker
• Thickness (Lower): ca. 10 m or thicker
• Lower limit: Abut unconformity (Omosu Formation)

• Distribution: Cape Shirashimazaki, Okinoshima city, Oki county, Shimane pref.

• Yamauchi et al. (2009) Geology of the Saigo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 118p. (in Japanese with English abstract 3p.)