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Minamidani Basalt Tayama, 2006MS

• Volcanic rocks
• Pliocene
• Intruded in (Trachybasalt): Tsuzurao Formation

• Lithofacies: Basalt aa lava (A flow unit), Trachybasalt lava (4 bodies)
• Sedimentary structures (Basalt): Columnar joint,

• Thickness (Basalt): ca. 20 m
• Lower limit: Unconformity (Oki Metamorphic Rocks)

• Distribution: Minamidani valley - Nakatani valley, 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.)