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Ikeda Basalt Yamauchi et al., 2009

Invalid synonym: Araki Basalt

• Type locality: Gongenbara - Oki-Kokubunji, Ikeda, Okinoshima city, Oki county, Shimane prefecture
• Volcanic rocks
• Pleistocene (1.3, 1.29 Ma, K-Ar)
• Correlation: Amegi Basalt, Chikaishinishi Basalt

• Lithofacies: Trachybasalt lava, Dikes, Tephrite lava

• Thickness: ca. 30 m
• Upper limit: Unconformity (Saigo Basalt, Higher II Terrace Deposits)
• Lower limit: Unconformity (Kori Formation)

• Distribution: Ikeda - Gongenbara - Oki-Kokubunji - Araki - Harada - Tsubame, 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.)