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Iruhi Tephra Noda et al., 2017

• Tephra
• Pleistocene (2.5, 2.0 Ma, FT)

• Lithofacies: White clay

• Thickness: 40 cm
• Host: Saita Formation

• Distribution: Iruhi, Saitanaka, Saita town, Mitoyo city, Kagawa pref.

• Noda et al. (2021) Geology of the Ikeda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 150p. (in Japanese with English abstract 5p.)
• Noda et al. (2017) Geology of the Kan-onji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 96p. (in Japanese with English abstract 4p.)